CN101573977B - Transmitting device, video signal transmitting method in transmitting device, recieving device and video signal recieving method in recieving device - Google Patents

Transmitting device, video signal transmitting method in transmitting device, recieving device and video signal recieving method in recieving device Download PDF

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Publication number
CN101573977B
CN101573977B CN2007800494207A CN200780049420A CN101573977B CN 101573977 B CN101573977 B CN 101573977B CN 2007800494207 A CN2007800494207 A CN 2007800494207A CN 200780049420 A CN200780049420 A CN 200780049420A CN 101573977 B CN101573977 B CN 101573977B
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China
Prior art keywords
data
signal
additional information
vision signal
unit
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Application number
CN2007800494207A
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Chinese (zh)
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CN101573977A (en
Inventor
中岛康久
菊池秀和
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索尼株式会社
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Priority to JP301486/2006 priority Critical
Priority to JP2006301486 priority
Priority to JP2007050426 priority
Priority to JP050426/2007 priority
Priority to JP2007240663 priority
Priority to JP240663/2007 priority
Application filed by 索尼株式会社 filed Critical 索尼株式会社
Priority to PCT/JP2007/071650 priority patent/WO2008056708A1/en
Priority claimed from CN201310497100.5A external-priority patent/CN103533282B/en
Publication of CN101573977A publication Critical patent/CN101573977A/en
Application granted granted Critical
Publication of CN101573977B publication Critical patent/CN101573977B/en

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Abstract

Making a television receiver smoothly display a list of contents of a video recorder improves users' operability of selection for the video contents. [MEANS FOR SOLVING THE PROBLEMS] A video camera recorder (source device) (10A) is connected with a television receiver (synch device) (30A) through an HDMI cable (1). The video camera recorder (10A) is provided with an HDMI transmitter (HDMI TX) (28)and a high speed data line I/F (28A). The television receiver (30A) is provided with an HDMI receiver (HDMI RX) (32) and a high speed data line I/F (32A). In response to a transmission request from a side of the television receiver (30A), the video camera recorder (10A) transmits added information (a list of contents and thumbnail data) at high speed to the television receiver (30A) by using a hi gh speed data line comprised of a predetermined line of the HDMI cable (1).

Description

The video signal receiving method of the video signal transmission of transmitting apparatus, transmitting apparatus, receiving equipment and receiving equipment

Technical field

The present invention relates to be applicable to the video signal receiving method of video signal transmission, receiving equipment and receiving equipment of transmitting apparatus, the transmitting apparatus of following system: this system forms by observing the equipment that digital video/audio frequency input/output interface standard is exported or inputted that is called as HDMI (high-definition media interface) standard.

Particularly, the present invention relates to by using bidirectional communication unit to send the additional information of each vision signal about being sent to external equipment to external equipment, make the external equipment side show smoothly the transmitting apparatus about the additional information of each vision signal, and therefore can improve by the user and select the performance to the operation of vision signal, etc.

Background technology

In recent years, for example, HDMI (high-definition media interface) is widely current as a kind of communication interface, by this communication interface, using at a high speed and to send as the digital video signal that does not compress (base band) vision signal (after this to television receiver, projecting apparatus and other displays from DVD (digital universal disc) register, Set Top Box and other AV sources (audio frequency and video source), be called as " view data ") with the digital audio and video signals (after this, be called as " voice data ") relevant to this vision signal.The details of HDMI standard has for example been described in patent documentation 1.

Patent documentation 1:WO2002/078336

Summary of the invention

Technical problem

In the situation that use HDMI to carry out the device-to-device connection, standardization the definition that sends of Voice & Video, and the definition that does not provide additional information to send.Therefore, therein in the situation that recorded the video camera Machine Records Unit of a plurality of scenes on medium, the television receiver that has connected the video camera Machine Records Unit is only identified this video camera Machine Records Unit as the video camera Machine Records Unit, and is difficult to the scene place desired the user and starts the reproduction of vision signal.

The objective of the invention is to improve the performance of user to the selection operation of vision signal.

Technical scheme

Concept of the present invention is a kind of transmitting apparatus, it is characterized in that comprising:

Signal transmitting unit, it sends vision signal as differential signal by the transmission path that uses a plurality of channels to external equipment;

Communication unit, its concrete line that forms transmission path by use carries out two-way communication;

The vision signal memory cell, its storage can be by each vision signal of using signal transmitting unit to send to external equipment;

Additional information storage unit, it stores the additional information of each vision signal about storing in described vision signal memory cell; And

Communication control unit, it is controlled as follows: by using communication unit, send the additional information of each vision signal about storing to external equipment in described additional information storage unit.

Transmitting apparatus according to the present invention comprises that the transmission path by using a plurality of channels sends the signal transmitting unit of vision signal as differential signal to external equipment.This transmitting apparatus is for example the HDMI source device.In the present invention, provide by use and form the communication unit that the concrete line of transmission channel carries out two-way communication.By using this communication unit, send the additional information about each vision signal that can send to external equipment to external equipment.

At this, additional information is text message or image information or text message and image information.In addition, in the situation that for example communication unit receives for the sending request of the additional information sent from external equipment, carry out to the transmission of the additional information of external equipment.

In the situation that by using communication unit to send the additional information about each vision signal to above-mentioned external equipment, for example, from external equipment, receive for the sending request of additional information, immediately the additional information about each vision signal to outside supply of equipment.Therefore, externally on equipment side, show smoothly the additional information about each vision signal, and improve the performance of the selection operation of being undertaken by the user.

In addition, in the present invention, for example, communication control unit can further be controlled as follows, when communication unit receives the information of the selection about concrete vision signal sent from external equipment, by using signal transmitting unit, be sent in the vision signal of storing in described vision signal memory cell the vision signal corresponding to the information of selection to external equipment.In this example, externally equipment side is selected in the situation of concrete vision signal, the selection information about concrete vision signal to the transmitting apparatus supply immediately, and can send from transmitting apparatus to external equipment the vision signal corresponding to the information of selection.Therefore, the external equipment side can make the selection operation that reflection is carried out vision signal by the user in image display immediately.Therefore, improve the performance of the operation of being undertaken by the user.

In addition, concept of the present invention is a kind of receiving equipment, it is characterized in that comprising:

Signal receiving unit, it comes from the external equipment receiving video signals as differential signal by the transmission path with a plurality of channels;

Communication unit, its concrete line that forms transmission path by use carries out two-way communication;

Image-display units, it is processed the vision signal received at the signal receiving unit place and shows image; And

The additional information display unit, it shows the additional information about each vision signal when communication unit receives the additional information about each vision signal that can send from external equipment, wherein, described additional information sends from external equipment.

Receiving equipment according to the present invention comprises vision signal that transmission path by using a plurality of channels sends from the external equipment signal receiving unit as differential signal.This receiving element is for example the HDMI receiver apparatus.In the present invention, provide by use and form the communication unit that the concrete line of transmission path carries out two-way communication.By using communication unit, can receive can send from external equipment, about the additional information of each vision signal, and carry out the demonstration of additional information.

At this, additional information is text message or image information or text message and image information.In addition, for example, by using communication unit, to external equipment, send sending request for the additional information about each vision signal.

In the situation that communication unit receives about the additional information of above-mentioned each vision signal and for example sent for the sending request of additional information to external equipment, can receive the additional information about each vision signal from external equipment immediately.Therefore, the additional information about each vision signal can be shown smoothly, and the performance to the selection operation of vision signal by the user can be improved.

In addition, in the present invention, for example, can further provide user operation unit, it allows the user to select concrete vision signal according to the additional information about each vision signal shown on the additional information display unit; And communication control unit, it is controlled as follows: by using communication unit, send the information of the selection about concrete vision signal of being selected by user operation unit to external equipment.In this example, in the situation that the user has selected concrete vision signal, the selection information about concrete vision signal to outside supply of equipment immediately, and can send from external equipment to receiving equipment the vision signal corresponding to the information of selection.Therefore, the selection operation to vision signal can be reflected immediately by the user in image display, and the performance of the operation of being undertaken by the user can be improved.

Beneficial effect

Can be from the additional information about each vision signal of external equipment transmission by using bidirectional communication unit to send to external equipment according to the present invention, externally on equipment side, show smoothly the additional information about each vision signal, and can improve the performance to the selection operation of vision signal by the user.In addition, according to the present invention, by using bidirectional communication unit to receive the additional information about each vision signal that can send from external equipment from external equipment, the additional information about each vision signal can be shown smoothly, and the performance to the selection operation of vision signal by the user can be improved.

The accompanying drawing explanation

Fig. 1 illustrates the block diagram of the example of the configuration of AV system according to an embodiment of the invention.

Fig. 2 is the block diagram of example that the configuration of the video camera Machine Records Unit (source device) that forms the AV system is shown.

Fig. 3 is the block diagram of example that the configuration of the television receiver (receiver apparatus) that forms the AV system is shown.

Fig. 4 is the block diagram of example that the configuration of HDMI transmitting element (HDMI source) and HDMI receiving element (HDMI receiver) is shown.

Fig. 5 is the block diagram of example that the configuration of HDMI reflector and HDMI receiver is shown.

Fig. 6 illustrates the diagram that TMDS sends the structure of data.

Fig. 7 is the diagram that the pin arrangement (type A) of HDMI end is shown.

Fig. 8 is the block structured diagram that the data that send by the CEC channel are shown.

Fig. 9 is the diagram of example that the data structure of a piece is shown.

Figure 10 is the diagram that the example of the logical address that the type according to each equipment arranges is shown.

Figure 11 is the diagram of example that the structure of order data is shown.

Figure 12 is the diagram of example that the data structure of the head when sending thumbnail data is shown.

Figure 13 is the sequence chart of the example for the data transmission of carrying out between the HDMI of the HDMI of video camera Machine Records Unit end and television receiver end by the HDMI cable is described.

Figure 14 is the diagram of the example of the transmission for thumbnail data is described.

Figure 15 is the diagram that is illustrated in the content demonstration example on receiver apparatus.

Figure 16 is the block diagram of example that the configuration of AV system according to another embodiment of the present invention is shown.

Figure 17 is the block diagram of example that the configuration of the video camera Machine Records Unit (source device) that forms this AV system is shown.

Figure 18 is the block diagram of example that the configuration of the television receiver (receiver apparatus) that forms the AV system is shown.

Figure 19 is the connection layout of example of configuration that the high-speed data line interface of video camera Machine Records Unit and television receiver is shown.

Figure 20 is the diagram of example that the data structure of the control command sent by high speed data lines is shown.

Figure 21 illustrates control command and for the diagram of the definition of the transmission additional information of control sequence.

Figure 22 is the sequence chart of the example for the data transmission of carrying out between the HDMI of the HDMI of video camera Machine Records Unit end and television receiver end by the HDMI cable is described.

Figure 23 is the connection layout of example of configuration that the high-speed data line interface of video camera Machine Records Unit and television receiver is shown.

Figure 24 is the connection layout of another example of configuration that the high-speed data line interface of video camera Machine Records Unit and television receiver is shown.

Figure 25 is the diagram that the structure of the E-EDID received by source device is shown.

Figure 26 is the diagram that the structure of the concrete data block of E-EDID manufacturer is shown.

Figure 27 is for the flow chart of the communication process undertaken by source device is described.

Figure 28 is for the flow chart of the communication process undertaken by receiver apparatus is described.

Figure 29 is for the flow chart of the image processing of being undertaken by source device is described.

Figure 30 is for the flow chart of the communication process undertaken by receiver apparatus is described.

Figure 31 is the connection layout of another example of configuration that the high-speed data line interface of video camera Machine Records Unit and television receiver is shown.

Figure 32 is for the flow chart of the image processing of being undertaken by source device is described.

Figure 33 is for the flow chart of the communication process undertaken by receiver apparatus is described.

Figure 34 is the block diagram of example that the configuration of the applied computer of the present invention is shown.

Figure 35 is the connection layout of an example again of configuration that the high-speed data line interface of video camera Machine Records Unit and television receiver is shown.

Figure 36 comprises the diagram that the two-way communication waveform is shown.

Description of reference numerals

The 1HDMI cable, 5 and 5V, the AV system, 10 and 10A video camera Machine Records Unit, 11 imagers, 12 imager drivers, 13 imaging signal treatment circuits, 14 camera control CPU, 15 still image signal processing circuits, 16 motion image signal treatment circuits, 17 memory cards, 18 recording/playback circuit, 19 recording mediums, 20 systems are controlled CPU, 21 flash roms, 22SDRAM, 24 microphones, 25 audio signal processing circuits, the 26LCD controller, the 27LCD panel, 28HDMI transmitting element (HDMI source), 28A high-speed data line interface, the 29HDMI end, 30 and the 30A television receiver, the 31HDMI end, 32HDMI receiving element (HDMI receiver), 32A high-speed data line interface, 35 antenna end, 36 digital tuners, 37 demodulation multiplexers, the 38MPEG decoder, 39 video processing circuits, 40 figure generative circuits, 41 panel drive circuits, 42 display floaters, 43 audio signal processing circuits, 44 audio amplifier circuits, 45 loud speakers, 50 internal buss, 51CPU, 52 flash roms, 53DRAM, 54 Ethernet interfaces, 55 network terminal, 56 remote control reception unit, 57 remote control transmitters, 81 reflectors, 82 receivers, 83DDC, the 84CEC line, 85EDID ROM, 88 reverse lines

Embodiment

After this, with reference to accompanying drawing, embodiments of the invention are described.Fig. 1 shows the example of the configuration of AV (audio frequency and video) system 5 according to embodiment.

AV system 5 comprises as the video camera Machine Records Unit 10 of source device with as the television receiver 30 of receiver apparatus.Video camera Machine Records Unit 10 is connected by HDMI cable 1 with television receiver 30.The HDMI end 29 that has connected HDMI transmitting element (HDMI TX) 28 is provided in video camera Machine Records Unit 10.The HDMI end 31 that has connected HDMI receiving element (HDMI RX) 32 is provided in television receiver 30.One end of HDMI cable 1 is connected to the HDMI end 29 of video camera Machine Records Unit 10, and the other end of HDMI cable 1 is connected to the HDMI end 31 of television receiver 30.

Fig. 2 shows the configuration of video camera Machine Records Unit 10.Video camera Machine Records Unit 10 comprises imager 11, imager driver 12, imaging signal treatment circuit 13, camera control CPU 14, still image signal processing circuit 15, motion image signal treatment circuit 16, memory card 17, recording/playback circuit 18, recording medium 19, system is controlled CPU (CPU) 20, flash rom (read-only memory) 21, SDRAM (Synchronous Dynamic Random Access Memory) 22, keyboard 23, microphone 24, audio signal processing circuit 25, lcd controller 26, LCD panel 27, HDMI transmitting element 28 and HDMI end 29.

Imager 11 for example is comprised of C-MOS image-forming component or CCD image-forming component.Imager driver 12 drives this imager 11.Imaging signal treatment circuit 13 is processed the imaging signal obtained by imager 11, to generate the view data (catching view data) corresponding to object.Camera control CPU 14 controls the operation of imager driver 12 and imaging signal treatment circuit 13.

When catching still image, compression and coding that 15 pairs of view data of being obtained by imaging signal treatment circuit 13 of still image signal processing circuit are carried out based on for example JPEG (JPEG (joint photographic experts group)) method are processed, to generate static image data.Then, still image signal processing circuit 15 is generated static image data write memory card 17, or controls CPU 20 by system generated static image data is write to flash rom 21.

In addition, still image signal processing circuit 15 generate as describe after a while, for the thumbnail data of the static image data of index, and record this thumbnail data in memory card 17.Generate explicitly thumbnail with each vision signal of record in recording medium 19 describing after a while, and this thumbnail forms the additional information (image information) about vision signal.In this sense, memory card 17 forms additional information storage unit.

25 pairs of audio signals of being obtained by microphone 24 of audio signal processing circuit are carried out the processing such as the A/D conversion, to obtain the voice data be associated with the view data of being caught.When the capture movement image, 16 pairs of view data of being obtained by imaging signal treatment circuit 13 of motion image signal treatment circuit and the voice data obtained by audio signal processing circuit 25 carry out the processing such as the compression that meets the recording medium form and coding, with generation, comprise the motion image data to the voice data of its interpolation.

When the capture movement image, recording/playback circuit 18 has recorded the motion image data generated by motion image signal treatment circuit 16 on loaded recording medium 19, as the vision signal of moving image.In this sense, recording medium 19 has formed the vision signal memory cell.Recording medium 19 can be configured for the additional information storage unit as the thumbnail of the index static image data of describing after a while.In addition, when the playback moving image, recording/playback circuit 18 reads motion image data from recording medium 35, and decodes to process etc. and obtain the replay image data.

For example, as recording medium 19, can use CD, hard disk, tape, semiconductor memory etc.In addition, in recording medium 19, for each unit of recorded vision signal, can record additional information (text message), such as title, (catching) date and time recorded, the time period of recording, logging mode with by the comment of user's input.At this, the unit of vision signal means in the vision signal of a scene that is starting from shooting to record during the time period of taking end, in the vision signal of identical dat recorder, a series of vision signals that created by editor etc.

Note, in this embodiment, where necessary, in recording medium 19, the vision signal of the moving image of record is called as video content.In this case, by one section video content of cell formation of above-mentioned vision signal.

Lcd controller 26 drives LCD (liquid crystal display) panel 27, and the view data based on from imaging signal treatment circuit 13 output or the replay image data that generated by recording/playback circuit 18, the image of display capture (moving image) or replay image (moving image) on LCD panel 27.In addition, lcd controller 26 drives LCD27, and the replay image data based on obtaining from memory card 17 etc. show replay image (still image) at LCD panel 27.

System is controlled the operation that CPU 20 controls still image signal processing circuit 15, motion image signal treatment circuit 16, recording/playback circuit 18 etc.Flash rom 21, SDRAM 22 and keyboard 23 are connected to system and control CPU 20.The control program of CPU 20 etc. is controlled in flash rom 21 storages for system.In addition, SDRAM 22 is used to process controlled control that CPU 20 carries out by system the temporary transient storage etc. of required data.The data of the contents list that in addition, flash rom 21 or SDRAM 22 storages are described after a while.Note, can in flash rom 21 or SDRAM 22, store rather than store thumbnail image data in above-mentioned memory card 17.

Keyboard 23 has formed user operation unit.System is controlled the mode of operation that CPU 20 determines keyboard 23, and controls the operation of video camera Machine Records Unit 10.The user can carry out operation and image capture (record) operation and the playback operation for inputting various additional informations etc.

System is controlled the additional information that record (text message or image information) and each section video content (each vision signal) of CPU 20 based in recording medium 19 and is carried out the content creating list, this is the data of each section video content, and stores contents list in flash rom 21 or SDRAM 22.In this sense, flash rom 21 or SDRAM 22 have formed additional information storage unit.Still image signal processing circuit 15 generates at least thumbnail as additional information (image information) for one section video content.Each thumbnail has been provided the ID of indication with respect to the corresponding relation of one section video content.In the situation that generate thumbnail from every section video content, can apply the various processing that tradition is known.For example, as the easiest processing, carry out creating thumbnail by the view data of the first with every section video content.Can control under the control of CPU 20 and show above-mentioned generated contents list and thumbnail on LCD panel 27 in system.

According to the communication that meets HDMI, from HDMI section 29 to HDMI cable 1, (not shown Fig. 2) sends baseband images (video) and voice data to HDMI transmitting element (HDMI source) 28.After a while the details of HDMI transmitting element 28 will be described.

The operation of the video camera Machine Records Unit 10 shown in Fig. 2 will be briefly described.

The imaging signal of being caught by imager 11 is supplied to imaging signal treatment circuit 13, and processed, and obtains the view data (catching view data) corresponding to object from imaging signal treatment circuit 13.When catching still image, 15 pairs of view data from 13 outputs of imaging signal treatment circuit of still image signal processing circuit are compressed and the processing of encoding, to generate static image data.Record static image data in memory card 17 grades.

In addition, when the capture movement image, 16 pairs of view data from 13 outputs of imaging signal treatment circuit of motion image signal treatment circuit and the voice data of exporting from audio signal processing circuit 25 carry out the processing such as the compression that meets the recording medium form and coding, with generation, comprise to the motion image data of the voice data of its interpolation.By using recording/playback circuit 18 to record motion image data on recording medium 19.

Vision signal for each unit be recorded, according to the operation to keyboard 23 by the user, the additional information (text message) of record such as title, record (catching) date and time, recording period, logging mode and comment in recording medium 19.Then, control the additional information (text message or image information) of CPU 20 based on about each section video content (each vision signal) by system, establishment is as the contents list of the data of each section video content, and stores contents list in flash rom 21 or SDRAM 22.Each add during the new unit of recorded video signal in recording medium 19 and upgrade contents list.

In addition, each in recording medium 19 during the new unit of recorded video signal, still image signal processing circuit 15 generates thumbnails, and records thumbnail in memory card 17 etc.Use foregoing list and thumbnail when displaying content list on television receiver 30, so that the user can select the video content of particular segment, as described later.

When the playback still image, record static image data from memory card 17 grades, and still image signal processing circuit 15 is carried out such as the processing of decoding to obtain the replay image data.Control CPU20 and motion image signal treatment circuit 16 to lcd controller 26 supply replay image data by system, and show still image on LCD panel 27.

When the playback moving image, read motion image data by using recording/playback circuit 18 from recording medium 19, and motion image signal treatment circuit 16 carries out such as the processing of decoding to obtain the replay image data.To lcd controller 26 supply replay image data, and show moving image on LCD panel 27.

To television receiver 30, sending about in the situation that the Audio and Video data of the motion image data of record in recording medium 19, read and supply motion image datas to motion image signal treatment circuit 16 from recording medium 19, motion image data is carried out to the processing such as decoding, and obtain baseband images and voice data.Then, to HDMI transmitting element 28 supply baseband images and voice datas, and it is sent to television receiver 30 by the HDMI cable 1 that is connected to HDMI end 29.

The cable 1 that is connected to HDMI end 29 is provided for the transmission line (transmission path) of controlling data, and for the transmission line (transmission path) of video data.The transmission line of controlling data has the configuration that allows to carry out in a bi-directional way the data transmission.Therefore, HDMI transmitting element 28 has the function that sending and receiving is controlled data, and the function that sends vision signal.The control data that received by HDMI transmitting element 28 are supplied to system and control CPU 20.In addition, control from system the control data that CPU 20 supplies send from HDMI transmitting element 28.

In this embodiment, the data of foregoing list are that the multistage sent from HDMI transmitting element 28 is controlled one of data.System is controlled the data that CPU 20 sends in response to the contents list sent request from television receiver 30.When sending contents list, system is controlled CPU 20 and is also sent thumbnail.Use description to after a while to send the details of the processing of contents list and thumbnail.

Fig. 3 shows the example of the configuration of television receiver 30.This television receiver 30 comprises HDMI end 31, HDMI receiving element 32, antenna end 35, digital tuner 36, demodulation multiplexer 37, MPEG (Motion Picture Experts Group) decoder 38, video processing circuit 39, figure generative circuit 40, panel drive circuit 41, display floater 42, audio signal processing circuit 43, audio amplifier circuit 44, loud speaker 45, internal bus 50, CPU 51, flash rom 52, DRAM (dynamic random access memory) 53, Ethernet interface (Ethernet I/F) 54, network terminal 55, remote control reception unit 56, with remote control transmitter 57." Ethernet " and " Ethernet " of noting Japanese is registered trade mark.

Antenna end 35 is the ends that are received in the television broadcasting signal of reception antenna (not shown) place reception.Digital tuner 36 is processed the television broadcasting signal that is imported into antenna end 35, and output is corresponding to the concrete transmission stream of the channel of being selected by the user.Demodulation multiplexer 37 extracts the part TS (sending stream) (the TS grouping of video data and the TS grouping of voice data) corresponding to user-selected channel from the transmission stream obtained by digital tuner 36.

In addition, demodulation multiplexer 37 extracts PSI/SI (program specifying information/information on services) from the transmission stream obtained by digital tuner 36, and to CPU 51 these PSI/SI of output.Multiplexing a plurality of channel together in the transmission stream obtained by digital tuner 36.Realize processing that undertaken by demodulation multiplexer 37, for from transmission stream, extracting the part TS of desired channel by the information that obtains the packet ID (PID) of the channel about expecting from PSI/SI (PAT/PMT).

Video PES (grouping Basic Flow) grouping that the TS of 38 pairs of video datas that obtained by demodulation multiplexer 37 of mpeg decoder grouping the forms processing of decode, with the acquisition video data.In addition, the audio frequency PES grouping that the TS grouping of the voice datas that 38 pairs of mpeg decoders are obtained by demodulation multiplexer 37 the forms processing of decode, with the acquisition voice data.

Video processing circuit 39 and figure generative circuit 40 carry out multi-screen processing, graph data overlap-add procedure etc. to the video data obtained by mpeg decoder 38 where necessary.The user interface screen of the routine contents list as will be described later of figure generative circuit 40 establishment etc.Panel drive circuit 41 drives display floater 42 according to the video data from 40 outputs of figure generative circuit.Display floater 42 is such as by formations such as LCD (liquid crystal display), PDP (Plasmia indicating panel).43 pairs of voice datas that obtained by mpeg decoder 38 of audio signal processing circuit carry out necessary processing, such as D/A, change.Audio amplifier circuit 44 amplifies from the audio signal of audio signal processing circuit 43 outputs, and the audio signal of amplifying to loud speaker 45 supplies.

CPU 51 controls the operation of each unit of television receiver 30.Flash rom 52 storages are controlled software and keep data.DRAM 53 forms the working region of CPU 51.CPU 51 loads to DRAM 53 software and the data that read from flash rom 52, starts software, and controls each unit of television receiver 30.

Remote control reception unit 56 receives the remote signal (remote control code) sent from remote control transmitter 57, and to CPU 51 supply remote control codes.CPU 51 controls each unit of television receiver 30 according to remote control code.Network terminal 55 is the ends that are connected to network and are connected to Ethernet interface 54.CPU 51, flash rom 52, DRAM 53 and Ethernet interface 54 are connected to internal bus 50.

The additional information (contents list and thumbnail) of each vision signal that in addition, DRAM 53 or flash rom 52 storages send from video camera Machine Records Unit 10.As mentioned above, about the additional information that is stored in each vision signal in DRAM53 or flash rom 52, be read where necessary and be supplied to figure generative circuit 40, and being used to create on it user interface screen that has shown contents list.

HDMI receiving element (HDMI receiver) 32 receives base band video (image) and the voice data to 31 supplies of HDMI end by HDMI cable 1 according to the communication that meets HDMI.After a while the details of HDMI receiving element 32 will be described.

The operation of the television receiver 30 shown in Fig. 3 will be briefly described.

Be imported into the television broadcasting signal of antenna end 35 to digital tuner 36 supplies.Digital tuner 36 is processed television broadcasting signal, and output is flowed corresponding to the concrete transmission of the channel of being selected by the user, and to the concrete stream that sends of demodulation multiplexer 37 supplies.Demodulation multiplexer 37 extracts the part TS (the TS grouping of video data and the TS grouping of voice data) corresponding to the channel of being selected by the user from sending stream, and to mpeg decoder 38 supply section TS.

The video PES grouping that the 38 couples of TS by video data of mpeg decoder grouping the forms processing of decode, with the acquisition video data.After video data is where necessary through the multi-screen processing in video processing circuit 39 and figure generative circuit 40, graph data overlap-add procedure etc., the video data of processing is supplied to panel drive circuit 41.Therefore, show the image corresponding to user-selected channel on display floater 42.

In addition, the audio frequency PES grouping that the 38 couples of TS by voice data of mpeg decoder grouping the forms processing of decode, with the acquisition voice data.At voice data, through the necessity such as the D/A conversion in audio signal processing circuit 43, process, and, after further amplifying in audio amplifier circuit 44, voice data is supplied to loud speaker 45.Therefore, the sound corresponding to the channel of being selected by the user from loud speaker 45 outputs.

In addition, HDMI receiving element 32 obtains video (image) data and the voice data that the video camera Machine Records Unit 10 from be connected to HDMI end 31 by HDMI cable 1 sends.This video data and voice data are supplied to respectively video processing circuit 39 and audio signal processing circuit 43.Subsequently, carry out operating with like class of operation when the aforementioned received tv broadcast signal.Show image on display floater 42, and from loud speaker 45 output sounds.

As mentioned above, the HDMI cable 1 that is connected to HDMI end 31 is provided for the transmission line (transmission path) of controlling data, and for the transmission line (transmission path) of video data.The transmission line of controlling data has the configuration that allows to carry out in a bi-directional way the data transmission.Therefore, HDMI receiving element 32 has the function that sending and receiving is controlled data, and the function of receiving video signals.The control data that received by HDMI receiving element 32 are supplied to CPU 51.In addition, the control data that send from HDMI receiving element 32 from CPU 51 supplies.In this embodiment, the data of foregoing list are that the multistage received by HDMI receiving element 32 is controlled one of data.

Fig. 4 shows the example of configuration of the HDMI receiving element (HDMI receiver) 32 of HDMI transmitting element (the HDMI source) 28 of the video camera Machine Records Unit 10 in the AV system 5 in Fig. 1 and television receiver 30.

At effective (effective) cycle of images (after this, also be called as where necessary effectively (active) video cycle) during, this is by the cycle that the cycle from specific vertical synchronizing signal to next vertical synchronizing signal, the horizontal blanking cycle of cancellation and vertical blanking cycle obtain, HDMI source 28 sends differential signal corresponding to the pixel data of the not compressed image of a screen by a plurality of channels to HDMI receiver 32 with one way system, and during horizontal blanking cycle and vertical blanking cycle, with one way system, by a plurality of channels, to HDMI receiver 32, send corresponding at least associated with image voice data, control data, the differential signal of other auxiliary datas etc.

That is to say, HDMI source 28 comprises reflector 81.For example, the reflector 81 not pixel data of compressed image is converted to corresponding differential signal, and serially sends this differential signal by three TMDS channels, #0, #1 and #2 (this is a plurality of channels) to the HDMI receiver 32 be connected by HDMI cable 1 with one way system.

In addition, reflector 81 will be converted to corresponding differential signal to voice data and further necessary data, other auxiliary datas etc. controlled that compressed image is not relevant, and serially send this differential signal by three TMDS channels, #0, #1 and #2 to the HDMI receiver 32 be connected by HDMI cable 1 with one way system.

In addition, reflector 81 sends pixel clock by TMDS clock channel to the HDMI receiver 32 connected by HDMI cable 1, and this pixel clock is synchronizeed with the pixel data sent by three TMDS channels, #0, #1 and #2.At this, during a pixel clock, by a TMDS channel #i (i=0,1,2), send 10 bit pixel data.

HDMI receiver 32 is during active video cycle, receive from HDMI source 28 with one way system the differential signal corresponding to pixel data be sent out by a plurality of channels, and receive from HDMI source 28 with one way system the differential signal corresponding to voice data and control data be sent out by a plurality of channels during horizontal blanking cycle or vertical blanking cycle.

That is to say, HDMI receiver 32 comprises receiver 82.Receiver 82 is with also by TMDS clock channel, from the HDMI source, 28 pixel clocks that send are synchronously, by TMDS channel #0, #1 and the HDMI source 28 of #2 from being connected by HDMI cable 1, the differential signal corresponding to pixel data be sent out with the one way system reception and the differential signal with the control data corresponding to voice data.

Comprise that for the transmission channel of the HDMI system that formed by HDMI source 28 and HDMI receiver 32 transmission channel that is called DDC (display data channel) 83 and CEC line 84 and three TMDS channel #0 send the transmission channel of pixel datas and voice data and TMDS clock channel as the transmission channel that pass through its transmission pixel clock as synchronously using one way system by itself and pixel clock from HDMI source 28 to 32 serials of HDMI receiver to #2.

Two holding wires of DDC 83 in the unshowned HDMI of being included in cable 1 form.Read E-EDID (strengthening the extending display identification data) by HDMI source 28 use DDC 83 from the HDMI receiver 32 connected by HDMI cable 1.

That is to say, HDMI receiver 32 comprises EDID ROM (read-only memory) 85 and the HDMI receiver 81 of storing E-EDID, and this EDID is the performance information about the performance (configuration/ability) of HDMI receiver 32 itself.The E-EDID of HDMI receiver 32 is read in HDMI source 28 from the HDMI receiver 32 connected by HDMI cable 1 by DDC 83, and identify the setting of the performance of HDMI receiver 32 according to this E-EDID, the picture format (profile (profile)) of for example being supported by the electronic equipment that comprises HDMI receiver 32, such as RGB, YCbCr4:4:4 and YCbCr4:4:2.

The individual signals line of CEC line 84 in the unshowned HDMI of being included in cable 1 forms.CEC line 84 is for the two-way communication of the control data of carrying out between HDMI source 28 and HDMI receiver 32.

In addition, the line 86 that is connected to the pin that is called HPD (hot plug detection) is included in HDMI cable 1.By using line 86, source device can detect the connection of receiver apparatus.In addition, also at HDMI cable 1, comprised the line 87 for the power supply from source device to receiver apparatus.In addition, reserved line 88 is included in HDMI cable 1.

Fig. 5 shows the example of the configuration of HDMI reflector 81 in Fig. 4 and HDMI receiver 82.

Reflector 81 comprises three encoders corresponding respectively to three TMDS channel #0, #1 and #2/serializer 81A, 81B and 81C.View data, auxiliary data and control data that encoder/serializer 81A, 81B and 81C encode respectively and be supplied to encoder/serializer 81A, 81B and 81C, be converted to serial data by parallel data, and the data that transmission is changed are as differential signal.At this, in the situation that view data comprises three components, such as the view data of R (redness), G (green) and B (blueness), the B component is supplied to encoder/serializer 81A, the G component is supplied to encoder/serializer 81B, and the R component is supplied to encoder/serializer 81C.

In addition, auxiliary data comprises, for example voice data and control packet.Control packet is supplied to for example encoder/serializer 81A, and voice data is supplied to encoder/serializer 81B and 81C.

In addition, controlling data comprises 1 bit vertical synchronizing signal (VSYNC), 1 bit level synchronizing signal (HSYNC) and its each is control bit CTL0, CTL1, CTL2 and the CTL3 of a bit.Vertical synchronizing signal and horizontal-drive signal are supplied to encoder/serializer 81A.Control bit CTL0 and CTL1 are supplied to encoder/serializer 81B, and control bit CTL2 and CTL3 are supplied to encoder/serializer 81C.

Encoder/serializer 81A sends B component, vertical synchronizing signal, horizontal-drive signal and the auxiliary data of the view data that is supplied to encoder/serializer 81A with time division way.That is to say, the B component that encoder/serializer 81A will be supplied to the view data of encoder/serializer 81A is converted to take the parallel data that 8 bits are unit, and it is corresponding to the bit of fixed qty.Encoder/serializer 81A this parallel data of encoding, be converted to serial data by this coded data in addition, and send the data after conversion by TMDS channel #0.

In addition, encoder/serializer 81A coding is supplied to the vertical synchronizing signal of encoder/serializer 81A and 2 bit parallel data of horizontal-drive signal, coded data is converted to serial data, and sends the data after changing by TMDS channel #0.In addition, the auxiliary data that encoder/serializer 81A will be supplied to encoder/serializer 81A is converted to the parallel data that 4 bits are unit.Then, encoder/serializer 81A this parallel data of encoding, the data after transform coding are serial data, and send the data after conversion by TMDS channel #0.

Encoder/serializer 81B sends G component, control bit CTL0 and CTL1 and the auxiliary data of the view data that is supplied to encoder/serializer 81B with time division way.That is to say, the G component that encoder/serializer 81B will be supplied to the view data of encoder/serializer 81B is converted to take the parallel data that 8 bits are unit, and it is corresponding to the bit of fixed qty.Encoder/serializer 81B this parallel data of encoding, be converted to serial data by this coded data in addition, and send the data after conversion by TMDS channel #1.

In addition, encoder/serializer 81B coding is supplied to the 2 bit parallel data of control bit CTL0 and the CTL1 of encoder/serializer 81B, the data after coding is converted to serial data, and sends the data after changing by TMDS channel #1.In addition, the auxiliary data that encoder/serializer 81B will be supplied to encoder/serializer 81B is converted to the parallel data that 4 bits are unit.Then, encoder/serializer 81B parallel data of encoding, be converted to serial data by the data after coding, and send the data after conversion by TMDS channel #1.

Encoder/serializer 81C sends R component, control bit CTL2 and CTL3 and the auxiliary data of the view data that is supplied to encoder/serializer 81C with time division way.That is to say, the R component that encoder/serializer 81C will be supplied to the view data of encoder/serializer 81C is converted to take the parallel data that 8 bits are unit, and it is corresponding to the bit of fixed qty.Encoder/serializer 81C this parallel data of encoding, be converted to serial data by this coded data in addition, and send the data after conversion by TMDS channel #2.

In addition, encoder/serializer 81C coding is supplied to the 2 bit parallel data of control bit CTL2 and the CTL3 of encoder/serializer 81C, the data after coding is converted to serial data, and sends the data after changing by TMDS channel #2.In addition, the auxiliary data that encoder/serializer 81C will be supplied to encoder/serializer 81C is converted to the parallel data that 4 bits are unit.Then, encoder/serializer 81C parallel data of encoding, be converted to serial data by the data after coding, and send the data after conversion by TMDS channel #2.

Receiver 82 comprises three recovery/decoder 82A, 82B and the 82C that corresponds respectively to three TMDS channel #0, #1 and #2.Recovery/decoder 82A, 82B and 82C receive and are sent out view data, auxiliary data and the control data as differential signal by TMDS channel #0, #1 and #2 respectively.In addition, recovery/decoder 82A, 82B and 82C are converted to parallel data by view data, auxiliary data and control data from serial data respectively, the data after the decoding conversion, and export decoded data.

Namely, recovery/decoder 82A receives and is sent out B component, vertical synchronizing signal, horizontal-drive signal and the auxiliary data as the view data of differential signal by TMDS channel #0.Then, recovery/decoder 82A is converted to parallel data by B component, vertical synchronizing signal, horizontal-drive signal and the auxiliary data of view data from serial data, the data after the decoding conversion, and the data of output decoding.

Recovery/decoder 82B receives and is sent out G component, control bit CTL0 and CTL1 and the auxiliary data as the view data of differential signal by TMDS channel #1.Then, then, recovery/decoder 82B is converted to parallel data by the G component of view data, control bit CTL0 and CTL1 and auxiliary data from serial data, the data after the decoding conversion, and the data of output decoding.

Recovery/decoder 82C receives and is sent out R component, control bit CTL2 and CTL3 and the auxiliary data as the view data of differential signal by TMDS channel #2.Then, recovery/decoder 82C is converted to parallel data by the R component of view data, control bit CTL2 and CTL3 and auxiliary data from serial data, the data after the decoding conversion, and the data of output decoding.

Fig. 6 shows the example that sends the transmission cycle (duration) of various transmission data by three TMDS channel #0, the #1 of HDMI and #2.Note, Fig. 6 shows in the situation that send the cycle of the various transmission data of (progressive) the line by line image with 720 horizontal pixels and 480 vertical pixels by TMDS channel #0, #1 and #2.

In three TMDS channel #0, #1 by HDMI and #2 send the video field (Video Field) of data, according to the type that sends data, there are three kinds of cycles, video data (VideoData) cycle, data islands (Data Island) cycle and (Control) cycle of control.

At this, the video field cycle is rising edge (efficient frontier) from the specific vertical synchronizing signal cycle to the rising edge of next vertical synchronizing signal.The video field cycle is divided into horizontal blanking time (horizontal blanking), vertical blanking time (vertical blanking), with effective video cycle (effective video (Active Video)), this is by from the video field cycle that the cycle, elimination of level blanking time and vertical blanking time obtain.

The video data cycle is assigned to the effective video cycle.During the video data cycle, the data of effective (effective) pixel of 720 pixels of the not compressing image data of a screen of transmission formation * 480 lines (effectively (Active) pixel).

Data islands cycle and control cycle are applied to horizontal blanking time and vertical blanking time.At data islands cycle and control cycle, send auxiliary data.

That is to say, the data islands cycle is corresponding to a part of horizontal blanking time and vertical blanking time.During the data islands cycle, between auxiliary data, send the data that do not relate to control, for example, the grouping of voice data.

Control cycle is assigned to another part of horizontal blanking time and vertical blanking time.During control cycle, between auxiliary data, send the data that relate to control, for example horizontal-drive signal, horizontal-drive signal and control packet.

At this, according to current HDMI, the frequency of the pixel clock sent by TMDS clock channel is 165MHz for example.In this case, in data islands, the transmission rate in the cycle is about 500Mbps.In this embodiment, by the usage data island cycle, from video camera Machine Records Unit 10 to television receiver, 30 send thumbnail data, i.e. index video data.

Fig. 7 shows the pin arrangement of HDMI end 29 and 31.This pin arrangement is called as type-A.

Be connected to the pin (pin that its number of pins is 1,4 or 7) that has been assigned with TMDS data #i+ and the pin (pin that its number of pins is 3,6 or 9) that has been assigned with TMDS data #i-as two lines that send by it as the differential lines of the TMDS data #i+ of the differential signal of TMDS channel #i and TMDS data #i-.

In addition, send by it pin that CEC line 84 as the CEC signal of controlling data is connected to pin that its number of pins is 13 and be 14 as its number of pins of empty (reserving) pin.In addition, the line sent such as SDA (serial data) signal of E-EDID by it is connected to the pin that its number of pins is 16.The line sent as SCL (serial clock) signal of the clock signal for synchronous when the sending and receiving SDA signal by it is connected to the pin that its number of pins is 15.Above-mentioned DDC 83 consists of the line that sends the line of SDA signal by it and send the SCL signal by it.

In addition, be connected to for detection of the line 86 of the connection of above-mentioned receiver apparatus the pin that its number of pins is 19 by source device.In addition, be used to be connected to as the line 87 of above-mentioned energising the pin that its number of pins is 18.

The structure of the data that send by the CEC channel shown in Fig. 4 to 11 explanations with reference to Fig. 8.Fig. 8 is the block structured diagram that the data that send by the CEC channel are shown.Configure as follows the CEC channel: send a piece in 4.5 milliseconds.When the beginning of data transmission, arrange and start bit.Then, arrange a piece after starting bit.After a piece, arrange the data block of the desired amt (n) of the data that comprised actual expectation transmission.

Fig. 9 shows the diagram of example of the data structure of a piece.In a piece, the address (source address) of source device and the address (receiver address) of receiver apparatus have been arranged.According to the type of equipment, each address is set.

Figure 10 shows the example of the logical address that the kind according to each equipment arranges.As shown in figure 10, for various types of equipment, 16 kinds of address values of from " 0 " to " 15 " are set.In the source address and receiver address of the piece shown in pie graph 9, according to source device and receiver apparatus, arrange corresponding address value as 4 Bit datas.For example, in the situation that the AV system 5 shown in Fig. 1, wherein by HDMI cable 1, connected video camera Machine Records Unit 10 and television receiver 30, source address means the address value " 10 " of video camera, and the receiver address means the address value " 0 " of television receiver (TV).

In addition, in order to use the CEC channel, send control command, the order shown in Figure 11 is provided.Although omitted in Figure 11, for each order, determined value.Receiver side is determined the instruction of order by determining the value sent.At this, the control command of the control that relates to video camera Machine Records Unit 10 only is shown.

<give Contents List (providing contents list) > order be for sending the order of the request for sending contents list.The receiver side that has received this order beam back describe after a while<set Content Number (content quantity is set) order is as response.<set Content Number > order is for sending the order of indication in the notice of the quantity that is stored in the inclusive segment shown in the contents list of equipment of itself.<set Content Info (content information is set) > order be the order of the data for sending contents list.

<Thumb Nail ID (thumbnail ID) > order is for sending the order of indication for the notice of the ID (identification number) that sends thumbnail data.<Play Content (play content) > order be the order of the instruction for sending playing back content.When receiving this order, the response of beaming back the state (no matter whether entering playback state) of indicating equipment.<Image View On (picture browsing is opened) > order be to have entered the order of the notice of playback state for sending indicating equipment.

Figure 12 shows in the situation that send the example of data structure of head of the data of thumbnail.In Figure 12, show 8 bits as a unit.Arrange the data of the packet type of indication thumbnail data in front 8 bits.Arrange the data of the content number of the content that this thumbnail of indication belongs in next 8 bit.Arrange the data of the data length of indication thumbnail data in next 8 bit.Then, arrange thumbnail data after head.

Thumbnail data can be to have carried out the view data (static image data) that certain compression is processed.For example with the data islands of arranging between the vertical blanking time of the video data shown in Fig. 6 and horizontal blanking time, arrange in order the multistage thumbnail data in the cycle.

Next, the example of the data transmission of carrying out between the HDMI of the HDMI of video camera Machine Records Unit 10 end 29 and television receiver 30 end 31 by the HDMI cable 1 in this embodiment is described with reference to Figure 13.

It is the example in situation about being handled as follows that these data send example: wherein, the user operates in remote control transmitter 57 (the seeing Fig. 3) list (contents list) of each section video content of record in the recording medium 19 in video camera Machine Records Unit 10 with acquisition on television receiver 30 sides, the video content segment of being selected according to this demonstration by the user by 10 playback of video camera Machine Records Unit, and show this video content on television receiver 30.

At first, the user operates on remote control transmitter 57 key of arranging so that on the display floater 42 of television receiver 30 display menu screen (step S11).Generated this menu screen under the control of the CPU 51 of television receiver 30 by figure generative circuit 40.Then, when the user carries out obtaining the operation of contents list for the equipment from being connected to HDMI end 31 according to menu screen, CPU 51 orders (step S12) by the CEC channel to hold the 31 video camera Machine Records Units that connect 10 to send by HDMI.In the order of this transmission, be for sending the request that sends contents list<give Content List > order.

Control CPU 20 when the system of video camera Machine Records Unit 10 and determine that while having received order, system is controlled CPU 20 and beamed back the quantity (step S13) at the inclusive segment shown in the inner contents list of preparing of video camera Machine Records Unit 10.By the data of the quantity by inclusive segment, add to the quantity for sending the instruction content section notice<set Content Number order obtains the order in this transmission.

After the quantity that has sent inclusive segment, CPU 20 send data for sending contents list<set Content Info order (step S14).After this order, CPU 20 send notice by ID being added to the ID for sending the indication thumbnail<Thumb Nail ID the data (step S 15) that obtain.By CEC channel transmissions<set Content Info > order and<Thumb Nail ID while ordering, the data islands that provides the data of the thumbnail of ID to be arranged on to arrange in each blanking time to it is in cycle, and sends by the transmission channel (TMDS channel #0, #1 and #2) of video data.

That is to say, for example, send comprised<set ContentInfo at CEC line by shown in Figure 14 (a) > order and<Thumb Nail ID during the control data d1 of order, to it, provide the data d2 of the thumbnail of ID to be arranged on the data islands cycle for the transmission channel of video data, and be sent out.

Attention is in the video camera Machine Records Unit 10 according to this embodiment, even in the situation that do not record operation or content playback operation, if receiver apparatus is connected to HDMI end 29, from 29 outputs of HDMI end for the video data of full frame white demonstration etc.

Return to the explanation with reference to Figure 13, repeating its quantity equals by<set Content Number > data transmission unit of the quantity of the inclusive segment of order notice, wherein<set Content Info > order,<Thumb NailID > order and the thumbnail data in data islands cycle be set to data transmission unit, and send the thumbnail video etc. of each section video content.That is to say, in the example of Figure 13, send the last location of content-data as step S16 and S17.

The CPU 51 of television receiver 30 has stored the data of the contents list the list sent from video camera Machine Records Unit 10 and the thumbnail data of multistage video content in DRAM 53 grades.Then, CPU 51 makes figure generative circuit 40 generate the display screen of contents list according to this contents list and thumbnail data, and makes display floater 42 show this display screen (step S18).

While when user's operating and remote controlling reflector 57 and from the contents list shown at display floater 42, selecting concrete video content segment (step S19), the CPU 51 of television receiver 30 by the numbering of selected video content segment add to instruction for sending one section video content of playback<Play Content order, and to video camera Machine Records Unit 10 send comprise to the numbering of the selected video content segment of its interpolation<Play Content order (step S20).

The system that has received the video camera Machine Records Unit 10 of play-back command order is controlled the video content segment of CPU 20 playback from the correspondence of recording medium 19, export the data of the video content of playback via HDMI end 29, and send data (step S21) to television receiver 30.Carry out the transmission of the data of video content by the transmission channel (TMDS channel #0, #1 and #2) that uses video data.

As mentioned above, when the data of the video content that starts to send playback, television receiver 30 carries out processing for the output of the video (image) received via HDMI section 31 and voice data, and carries out the playback process (step S22) for video content.

Figure 15 shows the example of the demonstration of the contents list on television receiver 30.In this example, show four titles on screen, and show thumbnail in a side of title.For example, by the rolling operation on screen, can the roll display title.Except thumbnail, show the additional information such as the length (time period of record) of the date and time recorded and content in the demonstration part of each title.The user can want the video content segment of playback with reference to selecting in title and thumbnail the demonstration from this contents list, and carries out the playback operation to selected video.

As mentioned above, in the AV system 5 shown in Fig. 1, only by with single HDMI cable 1, connecting video camera Machine Records Unit 10 and television receiver 30, can be sent in contents list and the thumbnail data of preparing in video camera Machine Records Unit 10 sides to television receiver 30, and can be on television receiver 30 sides displaying content list.Therefore, the user can understand the details of the video content of record in the recording medium 19 in video camera Machine Records Unit 10, and without operation video camera Machine Records Unit 10, the video content segment can be easily needed from 10 playback of video camera Machine Records Unit, and can carry out the demonstration of the video content etc. of playback.

In this case, owing to having generated for showing the screen of the list shown in Figure 15 on television receiver 30 sides, so video camera Machine Records Unit 10 sides only need content creating list etc.Therefore, on video camera Machine Records Unit 10, do not apply white elephant.The remote control transmitter 57 that in addition, can be attached to television receiver 30 by use carries out operation itself.Therefore, can realize user friendly.

Note, show the command configuration that illustrates in above-described embodiment as an example, and the present invention is not limited to this.In addition, although arrange thumbnail (index video) and send in the blanking time of the transmission line of video data in the above-described embodiments, can in the different time, arrange thumbnail transmission.For example, can meet CEC or the DDC line that the HDMI standard prepares by use and send thumbnail.

Next, another embodiment of the present invention will be described.Figure 16 shows the example of the configuration of AV (audio frequency and video) system 5A according to another embodiment of the present invention.

AV system 5A comprise as source device look video camera Machine Records Unit 10A and as the television receiver 30A of receiver apparatus.Depending on video camera Machine Records Unit 10A, with television receiver 30A, by HDMI cable 1, be connected.Provide in looking video camera Machine Records Unit 10A to it and connected the HDMI transmitting element (HDMI TX) 28 of formation communication unit and the HDMI end 29 of high-speed data line interface (I/F) 28A.

In addition, provide in television receiver 30A to it and connected the HDMI receiving element (HDMI RX) 32 of formation communication unit and the HDMI end 31 of high-speed data line interface (I/F) 32A.One end of HDMI cable 1 is connected to the HDMI end 29 of looking video camera Machine Records Unit 10A, and the other end of HDMI cable 1 is connected to the HDMI end 31 of television receiver 30A.

In the AV system 5 shown in above-mentioned Fig. 1, when from video camera Machine Records Unit 10 to television receiver 30 while sending contents lisies and thumbnail data, use the CEC channel and for the transmission channel (TMDS channel #0, #1 and #2) of video data.In the AV system 5A shown in Figure 16, by using the high-speed data item formed by the concrete line that forms HDMI cable 1, from looking video camera Machine Records Unit 10A, to television receiver 30A, send at a high speed contents list and thumbnail data.

Figure 17 shows the example of the configuration of video camera Machine Records Unit 10A.In Figure 17, meaned by identical mark corresponding to those the parts in Fig. 2, and will omit by rights the detailed description of those parts.

Video camera Machine Records Unit 10A comprises imager 11, imager driver 12, imaging signal treatment circuit 13, camera control CPU 14, still image signal processing circuit 15, motion image signal treatment circuit 16, memory card 17, recording/playback circuit 18, recording medium 19, system is controlled CPU20, flash rom 21, SDRAM22, keyboard 23, microphone 24, audio signal processing circuit 25, lcd controller 26, LCD panel 27, HDMI transmitting element 28, high-speed data line interface (I/F) 28A and HDMI end 29.

This high-speed data line interface 28A carrys out the interface of two-way communication for the concrete line with forming HDMI cable 1.Control between CPU 20 and HDMI end 29 and insert high-speed data line interface 28A in system.High-speed data line interface 28A sends the transmission data of controlling CPU 20 supplies from system to opposition equipment by HDMI cable 1 via HDMI end 29.In addition, high-speed data line interface 28A controls to system the reception data that CPU 20 supplies receive by HDMI cable 1 via HDMI end 29 from opposition equipment.After a while the details of high-speed data line interface 28A will be described.

Although will omit detailed description, other configurations of the video camera Machine Records Unit 10A shown in Figure 17 and operation with before those of the video camera Machine Records Unit 10 shown in Fig. 2 of description similar.

Figure 18 shows the example of the configuration of television receiver 30A.Television receiver 30A comprises HDMI end 31, HDMI receiving element 32, high-speed data line interface (I/F) 32A, antenna end 35, digital tuner 36, demodulation multiplexer 37, MPEG (Motion Picture Experts Group) decoder 38, video processing circuit 39, figure generative circuit 40, panel drive circuit 41, display floater 42, audio signal processing circuit 43, audio amplifier circuit 44, loud speaker 45, internal bus 50, CPU (CPU) 51, flash rom (read-only memory) 52, DRAM (dynamic random access memory) 53, Ethernet interface (Ethernet I/F) 54, network terminal 55, remote control reception unit 56, with remote control transmitter 57.

This high-speed data line interface 32A carrys out the interface of two-way communication for the concrete line with forming HDMI cable 1, be similar to the high-speed data line interface 28A of above-mentioned video camera Machine Records Unit 10A.Insert high-speed data line interface 32A between Ethernet interface 54 and HDMI end 31.High-speed data line interface 32A sends from CPU 51 transmission data via Ethernet interface 54 supplies by HDMI cable 1 to opposition equipment via HDMI end 31.In addition, the reception data that high-speed data line interface 32A receives by HDMI cable 1 via HDMI end 31 from opposition equipment to CPU 51 supplies via Ethernet interface 54.After a while the details of high-speed data line interface 32A will be described.

Although will omit detailed description, other configurations of the television receiver 30A shown in Figure 18 and operation with before those of the television receiver 30 shown in Fig. 3 of description similar.

The example of the configuration of the high-speed data line interface 28A that looks video camera Machine Records Unit 10A in the AV system 5A that Figure 19 shows at Figure 16 and the high-speed data line interface of television receiver 30A.Interface 28A forms and carries out the communication unit that LAN (local area network (LAN)) communicates by letter with 32A.In this embodiment, this communication unit is by being used a pair of differential lines, communicating corresponding to the reserved line (Ether-line) of empty (reserving) pin (14-pin) with corresponding to the HPD line (Ether+ line) of HPD pin (19-pin) between the many lines forming HDMI cable 1.

Video camera Machine Records Unit 10A comprises lan signal transtation mission circuit 411, terminating resistor device 412, AC coupling capacitor 413 and 414, lan signal receiving circuit 415, subtraction circuit 416, pullup resistor 421, the resistor 422 that forms low pass filter and capacitor 423, comparator 424, pull-down-resistor 431, forms resistor 432 and capacitor 433 and the comparator 434 of low pass filter.At this, high-speed data line interface 28A consists of lan signal transtation mission circuit 411, terminating resistor device 412, AC coupling capacitor 413 and 414, lan signal receiving circuit 415 and subtraction circuit 416.

Connect the series circuit of pullup resistor 421, AC coupling capacitor 413, terminating resistor device 412, AC coupling capacitor 414 and pull-down-resistor 431 between power line (+5.0V) and ground wire.Tie point P1 between AC coupling capacitor 413 and terminating resistor device 412 is connected to the positive output side of lan signal transtation mission circuit 411, and is connected to the positive input side of lan signal receiving circuit 415.In addition, the tie point P2 between AC coupling capacitor 414 and terminating resistor device 412 is connected to the negative output side of lan signal transtation mission circuit 411, and is connected to the negative input side of lan signal receiving circuit 415.Input side supply transmitted signal (transmission data) SG411 from from CPU 20 to lan signal transtation mission circuit 411.

In addition, the output signal SG412 of lan signal receiving circuit 415 is supplied to the positive side of subtraction circuit 416, and from CPU 20 to subtraction circuit 416 minus side end supply transmitted signal (transmission data) SG411.In subtraction circuit 416, deduct transmitted signal SG411 from the output signal SG412 of lan signal receiving circuit 415, and obtain reception signal (reception data) SG413.Receive signal SG413 and be supplied to CPU 20.

In addition, the tie point Q1 between pullup resistor 421 and AC coupling capacitor 413 is connected to ground wire by the series circuit of resistor 422 and capacitor 423.The output signal of the low pass filter that the tie point place between resistor 422 and capacitor 423 obtains is supplied to an input of comparator 424.In this comparator 424, the output signal of low pass filter compares with the reference voltage Vref 1 (+3.75V) that is supplied to another input.The output signal SG414 of comparator 424 is supplied to CPU20.

In addition, the tie point Q2 between AC coupling capacitor 414 and pull-down-resistor 431 is connected to ground wire by the series circuit of resistor 432 and capacitor 433.The output signal of the low pass filter that the tie point place between resistor 432 and capacitor 433 obtains is supplied to an input of comparator 434.In comparator 434, the output signal of low pass filter compares with the reference voltage Vref 2 (+1.4V) that is supplied to another input.The output signal SG415 of comparator 434 is supplied to CPU 20.

Television receiver 30A comprises lan signal transtation mission circuit 441, terminating resistor device 442, AC coupling capacitor 443 and 444, lan signal receiving circuit 445, subtraction circuit 446, pullup resistor 451, forms resistor 452 and capacitor 453, comparator 454, choke 461, resistor 462 and the resistor 463 of low pass filter.At this, high-speed data line interface 32A consists of lan signal transtation mission circuit 441, terminating resistor device 442, AC coupling capacitor 443 and 444, lan signal receiving circuit 445 and subtraction circuit 446.

The series circuit of contact resistance device 462 and resistor 463 between power line (+5.0V) and ground wire.The series circuit that is connected choke 461, AC coupling capacitor 444, terminating resistor device 442, AC coupling capacitor 443 and pull-down-resistor 451 between the tie point P1 between resistor 462 and resistor 463 and ground wire.

Tie point P3 between AC coupling capacitor 443 and terminating resistor device 442 is connected to the positive output side of lan signal transtation mission circuit 441, and is connected to the positive input side of lan signal receiving circuit 445.In addition, the tie point P4 between AC coupling capacitor 444 and terminating resistor device 442 is connected to the negative output side of lan signal transtation mission circuit 441, and is connected to the negative input side of lan signal receiving circuit 445.Input side supply transmitted signal (transmission data) SG417 from from Ethernet interface 54 to lan signal transtation mission circuit 441.

In addition, the output signal SG418 of lan signal receiving circuit 445 is supplied to the positive side of subtraction circuit 446, and from Ethernet interface 54 to subtraction circuit 446 minus side end supply transmitted signal SG417.In subtraction circuit 446, deduct transmitted signal SG417 from the output signal SG418 of lan signal receiving circuit 445, and obtain reception signal (reception data) SG419.Receive signal (reception data) SG419 and be supplied to Ethernet interface 54.

In addition, the tie point Q3 between pull-down-resistor 451 and AC coupling capacitor 443 is connected to ground wire by the series circuit of resistor 452 and capacitor 453.The output signal of the low pass filter that the tie point place between resistor 452 and capacitor 453 obtains is supplied to an input of comparator 454.In comparator 454, the output signal of low pass filter compares with the reference voltage Vref 3 (+1.25V) that is supplied to another input.The output signal SG416 of comparator 454 is supplied to CPU 51 (not shown).

The reserved line 501 comprised in HDMI cable 1 and HPD line 502 form differential twisted pair.The source end 511 of reserved line 501 is connected to the 14-pin of HDMI end 29, and the receiver side 521 of reserved line 501 is connected to the 14-pin of HDMI end 31.In addition, the source end 512 of HPD line 502 is connected to the 19-pin of HDMI end 29, and the receiver side 522 of HPD line 502 is connected to the 19-pin of HDMI end 31.

In video camera Machine Records Unit 10A, the tie point Q1 between above-mentioned pullup resistor 421 and AC coupling capacitor 413 is connected to the 14-pin of HDMI end 29.In addition, the tie point Q2 between above-mentioned pull-down-resistor 431 and AC coupling capacitor 414 is connected to the 19-pin of HDMI end 29.Simultaneously, in television receiver 30A, the tie point Q3 between above-mentioned pull-down-resistor 451 and AC coupling capacitor 443 is connected to the 14-pin of HDMI end 31.In addition, the tie point Q4 between above-mentioned choke 461 and AC coupling capacitor 444 is connected to the 19-pin of HDMI end 31.

Next, the operation that LAN explanation carried out with 32A by the high-speed data line interface 28A as above configured communicates by letter.

In video camera Machine Records Unit 10A, transmitted signal (transmission data) SG411 that controls CPU 20 outputs from system is supplied to the input side of lan signal transtation mission circuit 411, and the differential signal (positive output signal and negative output signal) of exporting corresponding to transmitted signal SG411 from lan signal transtation mission circuit 411.Be supplied to tie point P1 and P2 from the differential signal of lan signal transtation mission circuit 411 outputs, and send to television receiver 30A by a pair of line (reserved line 501 and HPD line 502) of HDMI cable 1.

In addition, in television receiver 30A, transmitted signal (transmission data) SG417 exported by Ethernet interface 54 from CPU 51 is supplied to the input side of lan signal transtation mission circuit 441, and 441 outputs of lan signal transtation mission circuit are corresponding to the differential signal (positive output signal and negative output signal) of transmitted signal SG417.Be supplied to tie point P3 and P4 from the differential signal of lan signal transtation mission circuit 441 outputs, and send to looking video camera Machine Records Unit 10A by a pair of line (reserved line 501 and HPD line 502) of HDMI cable 1.

In addition, in video camera Machine Records Unit 10A, because the input side of lan signal receiving element 415 is connected to tie point P1 and P2, therefore the sum signal obtained by the reception signal that will be added to corresponding to the transmitted signal of the differential signal (current signal) from 411 outputs of lan signal transtation mission circuit corresponding to the above-mentioned differential signal from television receiver 30A transmission, be obtained as the output signal SG412 of lan signal receiving circuit 415.In subtraction circuit 416, deduct transmitted signal SG411 from the output signal SG412 of lan signal circuit 415.Therefore, the output signal SG413 of subtraction circuit 416 is corresponding to transmitted signal (transmission data) SG417 of television receiver 30A.

In addition in television receiver 30A, because the input side of lan signal receiving element 445 is connected to tie point P3 and P4, therefore the sum signal obtained by the reception signal that will be added to corresponding to the transmitted signal of the differential signal (current signal) from 441 outputs of lan signal transtation mission circuit corresponding to the above-mentioned differential signal from video camera Machine Records Unit 10A transmission, be obtained as the output signal SG418 of lan signal receiving circuit 445.In subtraction circuit 446, deduct transmitted signal SG417 from the output signal SG418 of lan signal circuit 445.Therefore, the output signal SG419 of subtraction circuit 446 is corresponding to transmitted signal (transmission data) SG411 of video camera Machine Records Unit 10A.

As mentioned above, can between the high-speed data line interface 32A of the high-speed data line interface 28A of video camera Machine Records Unit 10A and television receiver 30A, carry out two-way LAN communication.

According to the configuration example shown in Figure 19, by using during single HDMI cable 1 realizes the interface of communicating by letter with LAN of communicating by letter of the exchange of facility information of the transmission of Audio and Video data, connection and checking, device control data, due to by differential transmission path to carrying out LAN communication as two-way communication, and send the notice of the connection status of this interface according to the DC bias voltage of at least one transmission path, therefore, can realize wherein neither physically with scl line, also physically not come to separate for the space of LAN communication with sda line.Therefore, due to this division, can be formed for independently the circuit that LAN communicates by letter with the electrical specifications for the DDC definition.Therefore, can realize stable and LAN communication reliably with low cost.

In addition, in Figure 19, with above-mentioned LAN, communicate by letter discretely, according to the DC bias level, by HPD line 502, to video camera Machine Records Unit 10A, send the fact that HDMI cable 1 is connected to television receiver 30A.That is to say, when HDMI cable 1 is connected to television receiver 30A, the resistor 462 in television receiver 30A and 463 and choke 461 make HPD line 502 hold 31 19-pin and the about 4V of bias voltage by HDMI.Video camera Machine Records Unit 10A is by using the low pass filter be comprised of resistor 432 and capacitor 433 to extract the DC bias voltage of HPD line 502, and for example, by come comparison DC bias voltage and reference voltage Vref 2 (1.4V) with comparator 434.

Because pull-down-resistor 431 exists, therefore, when HDMI cable 1 is not connected to television receiver 30A, the voltage of the 19-pin of HDMI end 29 is lower than reference voltage Vref 2.Simultaneously, when HDMI cable 1 is connected to television receiver 30A, the voltage of 19-pin is higher than reference voltage Vref 2.Therefore, when HDMI cable 1 is connected to television receiver 30A, the output signal SG415 of comparator 434 is in high level.Simultaneously, when HDMI cable 1 is free of attachment to television receiver 30A, output signal SG415 is in low level.Therefore, the CPU 20 of video camera Machine Records Unit 10A can identify according to the output signal SG415 of comparator 434 HDMI cable 1 and whether be connected to television receiver 30A.

In addition, in Figure 19, following function is provided: its DC bias potential according to reserved line 501 and mutually be identified at equipment that end place of HDMI cable 1 connects be can carry out LAN communication equipment (after this, be called " e-HDMI compatible equipment ") equipment (after this, being called " the incompatible equipment of e-HDMI ") that still can not carry out LAN communication.

As mentioned above, video camera Machine Records Unit 10A is by with drawing (+5V) to reserve line 501 on resistor 421, and television receiver 30A is by with the drop-down reserved line 501 of pull-down-resistor 451.Resistor 421 and 451 is not present in the incompatible equipment of e-HDMI.

DC electromotive force and the reference voltage Vref 1 of the reserved line 501 of the low pass filter formed by resistor 422 and capacitor 423 by relatively flowing through with comparator 424 as mentioned above depending on video camera Machine Records Unit 10A.In the situation that television receiver 30A is e-HDMI compatible equipment and pull-down-resistor 451, exist, the voltage of reserved line 501 is 2.5V.But, at television receiver 30A, be in the incompatible equipment of e-HDMI and the non-existent situation of pull-down-resistor 451, due to the existence of pullup resistor 421, the voltage of reserved line 501 is 5V.

Therefore, by with reference to voltage Vref1, being set to for example 3.75V, the output signal SG414 of comparator 424 in the situation that television receiver 30A be the e-HDMI compatible equipment in low level, and output signal SG414 is not in the situation that television receiver 30A is that the e-HDMI compatible equipment is in high level.Therefore, whether be e-HDMI compatible equipment to the CPU 20 of video camera Machine Records Unit 10A if can identify according to the output signal SG414 of comparator 424 television receiver 30A.

DC electromotive force and the reference voltage Vref 3 of the reserved line 501 of the low pass filter that similarly, television receiver 30A is comprised of resistor 452 and capacitor 453 by relatively flowing through with comparator 454 as mentioned above.In the situation that video camera Machine Records Unit 10A is e-HDMI compatible equipment and pullup resistor 421, exist, the voltage of reserved line 501 is 2.5V.But, at video camera Machine Records Unit 10A, be in the incompatible equipment of e-HDMI and the non-existent situation of pullup resistor 421, due to the existence of pull-down-resistor 451, the voltage of reserved line 501 is 0V.

Therefore, by with reference to voltage Vref3, being set to for example 1.25V, the output signal SG416 of comparator 454 in the situation that video camera Machine Records Unit 10A be the e-HDMI compatible equipment in high level, and output signal SG416 is not in the situation that video camera Machine Records Unit 10A is that the e-HDMI compatible equipment is in low level.Therefore, whether be e-HDMI compatible equipment to the CPU 51 of television receiver 30A if can identify according to the output signal SG416 of comparator 454 video camera Machine Records Unit 10A.

Attention can provide the pullup resistor 421 shown in Figure 19 in HDMI cable 1, and in video camera Machine Records Unit 10A, does not provide.In this case, each end of pullup resistor 421 line 501 between the line provided in HDMI cable 1, reserved is provided and is connected to the line (holding wire) of power supply (electrical source voltage).

In addition, the pull-down-resistor 451 shown in Figure 19 and resistor 463 can be provided in HDMI cable 1, and not provide in television receiver 30A.In this case, each end of pull-down-resistor 451 line 501 between the line provided in HDMI cable 1, reserved is provided and is connected to the line (ground wire) on ground (reference potential).In addition, each end of resistor 363 be connected between the line provided in HDMI cable 1, HPD line 502 and be connected to ground (reference potential) line (ground wire).

Figure 20 shows the example of the data structure of the control command sent by above-mentioned high speed data lines.By this high speed data lines, can be controlled any data structure.But expectation has and meets in recent years as the data structure of the IP (Internet Protocol) of the standard of network service.Finally, the control command shown in configuration Figure 20 is in order to meet the data structure of the Payload part of IP grouping.That is to say, control command consists of " Length (length) " of the whole length of " Opcode (command code) " that mean control command, expression data and " Data (data) " of data itself.

Figure 21 shows in the embodiment described after a while control command and for the definition of the transmission additional information of control sequence." Request Contents List (request content list) " order indication is for sending the order to the request of contents list, and this order sends from television receiver (receiver apparatus) 30A to video camera Machine Records Unit (source device) 10A.In the situation that the additional information that will be sent out exists with respect to " RequestContents List ", send " Thumb Nail (thumbnail) " order from video camera Machine Records Unit (source device) 10A to television receiver (receiver apparatus) 30A.

As " Thumb Nail " order, No. ID of Thumb Nail and additional information (contents list and thumbnail data) are sent out as data division.The instruction of the inclusive segment that playback selected by the user is sent in " Play Content " order, and the numbering that sends this inclusive segment is as data division." Select Input " order is for being switched to the order of the HDMI end 31 be connected with video camera Machine Records Unit (source device) 10A that exports the inclusive segment of being selected by the user, and the HDMI physical address is sent out as data division.Television receiver (receiver apparatus) 30A identifies the HDMI end according to sent HDMI physical address with the physical address when carrying out when HDMI is connected reading, and carries out to the switching of HDMI input.

The example that the data of next, carrying out between the HDMI of the HDMI of video camera Machine Records Unit 10A end 29 and television receiver 30A end 31 by HDMI cable 1 in this embodiment with reference to Figure 22 explanation send.

This data send the example that example is situation about being handled as follows: in this processing, the user operates in remote control transmitter 57 (seeing Figure 18) on television receiver 30A side to obtain the list of each video content segment of record in the recording medium 19 in video camera Machine Records Unit 10A, the video content segment of being selected according to this demonstration by the user by video camera Machine Records Unit 10A playback, and show this video content on television receiver 30A.

At first, the user operates on remote control transmitter 57 key of arranging so that on the display floater 42 of television receiver 30A display menu screen (step S45).Generated this menu screen under the control of the CPU 51 of television receiver 30A by figure generative circuit 40.Then, when the user carries out obtaining the operation of contents list for the equipment from being connected to HDMI end 31 according to menu screen, CPU 51 is by being used the high-speed data alignment as the video camera Machine Records Unit 10A transmission<Request Contents List that holds 31 equipment that connect by HDMI > order (step S46).

Control CPU 20 when the system of video camera Machine Records Unit 10A and determine received<RequestContents List while ordering, system is controlled every section video content creation " Thumb Nail " order of CPU 20 for record in the recording medium 19 at video camera Machine Records Unit 10A, in this " Thumb Nail " order, data division comprises No. ID and additional information (contents list and thumbnail data) of thumbnail, and repeatedly to television receiver 30A, sends " Thumb Nail " order (step S47-1 is to step S47-n) by high speed data lines.

The CPU 51 of television receiver 30A stores the data of the contents list sent from video camera Machine Records Unit 10A and the thumbnail data of each section video content list in DRAM 53 grades.Then, CPU 51 is by with figure generative circuit 40, according to this contents list and thumbnail data, generating the display screen for contents list, and shows this contents list (step S48) on display floater 41.In this case, the demonstration of carrying out the contents list in the television receiver 30 with the above-mentioned system of the AV at Fig. 15 on the display floater 42 of television receiver 30A similarly shows (seeing Figure 15).

When user's operating and remote controlling reflector 57 is selected concrete video content segment in the contents list from showing at display floater 42 (step S49), the CPU 51 of television receiver 30A is by being used high-speed data alignment video camera register 10A to send " PlayContent " order (step ST50) of the instruction for sending the playback video content.In " Play Content " order, data division comprises No. ID corresponding to the thumbnail of the video content segment of being selected by the user.

The system that has received the video camera Machine Records Unit 10A of " Play Content " order is controlled CPU 20 by using high-speed data alignment television receiver 30A to send " Select Input (selecting input) " order (step S51), from video content segment corresponding to recording medium 19 playback, hold the data of the video content of 29 output playback by HDMI, and send these data (step S52) to television receiver 30A.The transmission channel (TMDS channel #0, #1 and #2) that is used for video data by use carries out the transmission of the data of video content.

The television receiver 30A that has received " Select Input " order carries out to the switching (step S53) of the HDMI end 31 be connected with video camera Machine Records Unit 10A.Therefore, television receiver 30A carries out the video (image) via 31 receptions of HDMI end and the output of voice data are processed, and carries out the playback process of the concrete video content segment to being selected by the user.

As mentioned above, in the AV system 5 as shown in above-mentioned Fig. 1, in the AV system 5A shown in Figure 16, only by via single HDMI cable 1, connecting video camera Machine Records Unit 10A and television receiver 30A, can be sent in contents list and the thumbnail data of preparing in video camera Machine Records Unit 10A side to television receiver 30A, and can be on television receiver 30A side displaying content list.Therefore, the user can understand the details of the video content of record in the recording medium 19 in video camera Machine Records Unit 10A, and without operation video camera Machine Records Unit 10A, the video content segment can be easily needed from video camera Machine Records Unit 10A playback, and can carry out the demonstration of the video content etc. of playback.

In addition, in the AV system 5A shown in Figure 16, by using the high speed data lines formed by the reserved line that forms HDMI cable 1 (Ether-line) and HPD line (Ether+ line), carry out contents list from video camera Machine Records Unit 10A to television receiver 30A and the transmission of thumbnail data and the sending and receiving of the order between video camera Machine Records Unit 10A and television receiver 30A from.

Therefore, for example, in the situation that the user sends the request content list from television receiver 30A side, television receiver 30A side can receive contents list and thumbnail data from video camera Machine Records Unit 10A immediately.Therefore, can carry out smoothly the demonstration of contents list, and the performance of the selection operation that can high advance to be undertaken by the user.

In addition, for example, in the situation that the user has selected concrete video content segment from the contents list shown, supply immediately the selection information of concrete video content segment about this to video camera Machine Records Unit 10A, and send the video content segment of selecting information corresponding to this from video camera Machine Records Unit 10A to television receiver 30A.Therefore, user's operation of selecting video content segment can be reflected immediately in image shows, and the performance of user's operation can be improved.

Note, although the situation that reserved line (Ether-line) by using HDMI cable 1 and HPD line (Ether+ line) form the communication unit that carries out two-way communication has been shown in the AV system 5A shown in Figure 16, and the configuration of carrying out the communication unit of two-way communication is not limited to this.Then, another configuration example will be described.In following example, will furnish an explanation, wherein, video camera Machine Records Unit 10A is as source device, and television receiver 30A is as receiver apparatus.

Figure 23 shows wherein by with CEC line 84, with reserved line 88, carrying out the example that the IP based on the half-duplex operation method communicates by letter.Note, in Figure 23, meaned corresponding to those parts in Fig. 4 by identical mark, and the explanation of omitting by rights those parts.

The high-speed data line interface 28A of source device comprises converting unit 131, decoding unit 132, switch 133, switch control unit 121 and timing control unit 122.By the two-way IP communication between source device and receiver apparatus, the TX data to converting unit 131 supplies as the data that send from source device to receiver apparatus.

Converting unit 131 consists of for example differential amplifier.Converting unit 131 is the differential signal for consisting of two part signals by supplied Tx data transaction.In addition, converting unit 131 sends by CEC line 84 and reserved line 88 differential signal obtained by conversion to receiver apparatus.That is to say, converting unit 131 by CEC line 84, more specifically, provide and be connected to the holding wire of the CEC line 84 of HDMI cable 1 in source device, form a part signal of the differential signal obtained by conversion to switch 133 supplies.Converting unit 131 also by reserved line 88, more specifically, provide and be connected to the holding wire of the reserved line 88 of HDMI cable 1 in source device, form another part signal of differential signal to the receiver apparatus supply.

Decoding unit 132 is to consist of for example differential amplifier.The input of differential amplifier is connected to CEC line 84 and reserved line 88.Decoding unit 132 receives the differential signal sent by CEC line 84 and reserved line 88 from receiver apparatus under the control of timing control unit 122,, the differential signal formed by the part signal on CEC line 84 and the part signal on reserved line 88, differential signal is decoded into to the Rx data as initial data, and exports this Rx data.At this, the Rx data are the data that send from receiver apparatus to source device by the two-way IP communication between source device and receiver apparatus.

When data send, to switch 133 supply from the CEC signal of the control unit (CPU) of source device or from the formation of converting unit 131 part signal corresponding to the differential signal of Tx data.When data receiver, to switch 133 supply from the CEC signal of receiver apparatus or from the formation of receiver apparatus the part signal corresponding to the differential signal of Rx data.Under the control of switch control unit 121, switch 133 selects CEC signal from control unit (CPU), from the CEC signal of receiver apparatus, form corresponding to the part signal of the differential signal of Tx data or form the part signal corresponding to the differential signal of Rx data, and export selected signal.

That is to say, when source device sends data to receiver apparatus, switch 133 is selected the CEC signal of supplying from control unit (CPU) or the part signal of supplying from converting unit 131, and sends selected CEC signal or part signal by CEC line 84 to receiver apparatus.In addition, when source device receives the data that send from receiver apparatus, switch 133 receives the CEC signal that sends by CEC line 84 from receiver apparatus or corresponding to the part signal of the differential signal of Rx data, and the CEC signal or the part signal that to control unit (CPU) or decoding unit 132 supplies, receive.

Switch control unit 121 is controlled this switch 133 and is carried out as follows the switching of switch 133: select to be supplied to any one in the signal of switch 133.Timing control unit 122 is controlled the sequential of the reception of the differential signal undertaken by decoding unit 132.

In addition, the high-speed data line interface 32A of receiver apparatus comprises converting unit 134, decoding unit 136, switch 135, switch control unit 124 and timing control unit 123.Converting unit 134 consists of for example differential amplifier.The Rx data are supplied to converting unit 134.Under the control of timing control unit 123, converting unit 134 is the differential signal for consisting of two part signals by supplied Rx data transaction, and sends by CEC line 84 and reserved line 88 differential signal obtained by conversion to source device.

That is to say, converting unit 134 by CEC line 84, more specifically, provide and be connected to the holding wire of the CEC line 84 of HDMI cable 1 in receiver apparatus, form a part signal of the differential signal obtained by conversion to switch 135 supplies.Converting unit 134 also by reserved line 88, more specifically, provide and be connected to the holding wire of the reserved line 88 of HDMI cable 1 in receiver apparatus, form another part signal of differential signal to the source device supply.

When data receiver, to switch 135 supply from the CEC signal of the control unit of source device or from the formation of source device the part signal corresponding to the differential signal of Tx data.When data send, to switch 135 supply from the formation of converting unit 134 corresponding to the part signal of the differential signal of Rx data or from the CEC signal of the control unit (CPU) of receiver apparatus.Under the control of switch control unit 124, switch 135 selects CEC signal from source device, from the CEC signal of control unit (CPU), form corresponding to the part signal of the differential signal of Tx data or form the part signal corresponding to the differential signal of Rx data, and export selected signal.

That is to say, when receiver apparatus sends data to source device, switch 135 is selected from the CEC signal of control unit (CPU) supply of receiver apparatus or the part signal of supplying from converting unit 134, and sends selected CEC signal or part signal by CEC line 84 to source device.

In addition, when receiver apparatus receives from source device transmission data, switch 135 receives the CEC signal that sends by CEC line 84 from source device or corresponding to the part signal of the differential signal of Tx data, and the CEC signal or the part signal that to control unit (CPU) or decoding unit 136 supplies, receive.

Decoding unit 136 is to consist of for example differential amplifier.The input of differential amplifier is connected to CEC line 84 and reserved line 88.Decoding unit 136 receives the differential signal sent by CEC line 84 and reserved line 88 from source device,, the differential signal consisted of the part signal on CEC line 84 and the part signal on reserved line 88, be decoded into the Tx data as initial data using differential signal, and export this Tx data.

Switch control unit 124 is controlled this switch 135 and is carried out as follows the switching of switch 135: select to be supplied to any one in the signal of switch 135.Timing control unit 123 is controlled the sequential of the transmission of the differential signal undertaken by converting unit 134.

Figure 24 shows wherein by using CEC line 84, reserved line 88, holding wire (sda line) (by it, sending the SDA signal) and holding wire (scl line) (by it, sending the SCL signal) to carry out the example that the IP based on duplex communication method communicates by letter.Note, in Figure 24, meaned corresponding to those the parts in Figure 23 by identical mark, and will omit by rights the explanation of those parts.

The high-speed data line interface 28A of source device comprises converting unit 131, switch 133, switch 181, switch 182, decoding unit 183, switch control unit 121 and switch control unit 171.

When data send, the SDA signal to switch 181 supplies from the control unit (CPU) of source device.When data receiver, to switch 181 supply from the SDA signal of receiver apparatus or from the formation of receiver apparatus the part signal corresponding to the differential signal of Rx data.Under the control of switch control unit 171, switch 181 selects SDA signal from control unit (CPU), from the SDA signal of receiver apparatus or form the part signal corresponding to the differential signal of Rx data, and exports selected signal.

That is to say, when source device receives the data that send from receiver apparatus, switch 181 receives the SDA signal that sends by sda line 191 (this is to send the holding wire of SDA signal by it) from receiver apparatus or corresponding to the part signal of the differential signal of Rx data, and supplies to control unit (CPU) or decoding unit 183 SDA signal or the part signal received.

In addition, when source device sends data to receiver apparatus, switch 181 sends from the SDA signal of control unit (CPU) supply or not to the receiver apparatus transmitted signal to receiver apparatus by sda line 191.

When data send, the SCL signal to switch 182 supplies from the control unit (CPU) of source device.When data receiver, to switch 182 supply from the formation of receiver apparatus the part signal corresponding to the differential signal of Rx data.Under the control of switch control unit 171, switch 182 is selected the SCL signal or is formed the part signal corresponding to the differential signal of Rx data, and exports selected signal.

That is to say, when source device receives the data that send from receiver apparatus, the part signal that switch 182 receives corresponding to the differential signal of Rx data, wherein, this part signal sends from receiver apparatus by scl line 192, and scl line 192 is to send the holding wire of SCL signal by it, and the part signal received to decoding unit 183 supplies, or does not receive signal.

In addition, when source device sends data to receiver apparatus, switch 182 sends from SCL signal or the non-transmitted signal of control unit (CPU) supply of source device to receiver apparatus by scl line 192.

Decoding unit 183 is to consist of for example differential amplifier.The input of differential amplifier is connected to sda line 191 and scl line 192.Decoding unit 183 receives the differential signal sent by sda line 191 and scl line 192 from receiver apparatus,, the differential signal formed by the part signal on sda line 191 and the part signal on scl line 192, differential signal is decoded into to the Rx data as initial data, and exports this Rx data.

Switch control unit 171 is controlled this switch 181 and switch 182 and is carried out as follows the switching of switch 181 and switch 182: any one of the signal that each selection of switch 181 and switch 182 is supplied.

In addition, the high-speed data line interface 32A of formation receiver apparatus comprises converting unit 184, switch 135, switch 185, switch 186, decoding unit 136, switch control unit 172 and switch control unit 124.

Converting unit 184 consists of for example differential amplifier.The Rx data are supplied to converting unit 184.Converting unit 184 is the differential signal for consisting of two part signals by supplied Rx data transaction, and sends by sda line 191 and scl line 192 differential signal obtained by conversion to source device.That is to say, converting unit 184 sends a part signal that forms the differential signal obtained by conversion and sends another part signal that forms differential signal by switch 186 to source device to source device by switch 185.

When data send, to switch 185 supply from the formation of converting unit 184 corresponding to the part signal of the differential signal of Rx data or from the SDA signal of the control unit (CPU) of receiver apparatus.When data receiver, the SDA signal to switch 185 supplies from source device.Under the control of switch control unit 172, switch 185 is selected from the SDA signal of control unit (CPU) or is formed the part signal corresponding to the differential signal of Rx data, and exports selected signal.

That is to say, when receiver apparatus receives the data that send from source device, switch 185 receives the SDA signal sent from source device by sda line 191, and the SDA signal received to control unit (CPU) supply, or does not receive signal.

In addition, when receiver apparatus sends data to source device, switch 185 sends from the SDA signal of control unit (CPU) supply or the part signal of supplying from converting unit 184 to source device by sda line 191.

When data send, to switch 186 supply from the formation of converting unit 184 corresponding to the part signal of the differential signal of Rx data or from the SDA signal of the control unit (CPU) of receiver apparatus.When data receiver, the SCL signal to switch 186 supplies from source device.Under the control of switch control unit 172, switch 186 is selected to form part signal or the SCL signal corresponding to the differential signal of Rx data, and exports selected signal.

That is to say, when receiver apparatus receives the data that send from source device, switch 186 receives the SCL signal sent from source device by scl line 192, and the SCL signal received to control unit (CPU) supply, or does not receive signal.

In addition, when receiver apparatus sends data to source device, switch 186 sends from the part signals of converting unit 184 supplies to source device by scl line 192, or transmitted signal not.

Switch control unit 172 control switchs 185 and switch 186 and carry out as follows the switching of switch 185 and switch 186: any one of the signal that each selection of switch 185 and switch 186 is supplied.

Mention along band, communicate by letter in the situation that source device carries out IP with receiver apparatus, according to each configuration of source device and receiver apparatus, determine whether to carry out half-duplex operation and whether can carry out full-duplex communication.Therefore, by reference to the E-EDID received from receiver apparatus, the sending and receiving of source device based on the CEC signal determined and carried out half-duplex operation, full-duplex communication or two-way communication.

The E-EDID received by source device consists of for example basic block shown in Figure 25 and extension blocks.

In the first of the basic block of E-EDID, arrange by take the defined data of standard of the E-EDID1.3 that " E-EDID1.3 basic structure " be representative.Then, arrange the time sequence information that meaned by " preferably sequential (Preferred timing) " for maintaining with the compatibility of traditional E DID and by for maintaining compatibility, " the second sequential " that be different from " preferably sequential " the represented time sequence information with traditional E DID.

In addition, in basic block, in " the second sequential " afterwards, arrange in order by the information of " monitor title (Monitor NAME) " title represented, that be used to indicate display device and by " restriction of monitor scope ", meaned, be used to indicate in the situation that the information of the quantity that the ratio of width to height is 4: 3 and the pixel that can show at 16: 9.

Simultaneously, in the first of extension blocks, arrange by the information represented about " speaker configurations " of left and right loud speaker.Then, arrange in order data, frame rate and the interlacing represented by " VIDEO SHORT (video profile) " of the information of the size of describing the image about showing or line by line and about the information of the ratio of width to height etc., by describing the data represented about " AUDIO SHORT (audio profile) " of the information of audio encoding and decoding method that can playback, sample frequency, cut-off (cutoff) frequency, numeral (number) coding/decoding bit etc. and by the information represented about " speaker configurations " of left and right loud speaker.

In addition, in extension blocks, in " speaker configurations " afterwards, arranged the data represented by " vendor specific " that each manufacturer is defined uniquely, by for maintaining the time sequence information represented with " the 3rd sequential " of the compatibility of traditional E DID and by for maintaining the time sequence information represented with " the 4th sequential " of the compatibility of traditional E DID.

In addition, the data that meaned by " vendor specific " have data structure shown in Figure 26.That is to say, in the data by " vendor specific " means, provide the 0th to the N piece, its each be the piece of 1 byte.

In place in the first of the data that meaned by " vendor specific " the 0th, arrange the head represented by " vendor specific flag code (=3) " of the data field that is used to indicate data " vendor specific " and be used to indicate " length (=N) " represented information of the length of data " vendor specific ".

In addition, in the 1st to the 3rd, arrange by " 24 bit IEEE login ID (0x000C03) " the represented information that is used to indicate number " 0x000C03 " that register for HDMI (R).In addition, in the 4th to the 5th, arrange by " A ", " B " of the 24 bit physical addresss that are used to indicate receiver apparatus, the information that " C " and " D " means respectively.

In the 6th, arrange information that the mark represented by " supports-AI " that be used to indicate the function of being supported by receiver apparatus, " DC-48 bit " by the bit number that is used to specify each pixel, " DC-36 bit " and " DC-30 bit " institute mean respectively, by being used to indicate mark that whether receiver apparatus support that " DC-Y444 " of transmission of image of YCbCr4:4:4 is represented and by indicating receiver apparatus whether to support " DVI-pair " represented mark of couple (dual) DVI (Digital Visual Interface).

In addition, in the 7th, arrange " Max-TMDS-Clock (maximum TMDS clock) " the represented information by the peak frequency of the pixel clock that is used to indicate TMDS.In addition, in the 8th, arrange by the existence that is used to indicate the Audio and Video deferred message or non-existent " reaction time (Latency) " represented mark, by being used to indicate the represented full duplex mark of " full duplex " that whether can carry out full-duplex communication and by being used to indicate " half-duplex " the represented half-duplex mark that whether can carry out half-duplex operation.

At this, for example, full duplex mark (for example, being set to " 1 ") indication receiver apparatus is set and there is the full-duplex communication of carrying out, receiver apparatus has the configuration shown in Figure 24.The full duplex that resets mark (for example, being set to " 0 ") indication receiver apparatus does not have the function of carrying out full-duplex communication.

Similarly, half-duplex mark (for example, being set to " 1 ") indication receiver apparatus is set and has the half-duplex operation of carrying out, receiver apparatus has the configuration shown in Figure 23.The half-duplex mark (for example, being set to " 0 ") that resets indication receiver apparatus does not have the function of carrying out half-duplex operation.

In addition, in the 9th of the data represented by " vendor specific ", arrange the delay time data of the progressive meaned by " video reaction time ".In the 10th, arrange the delay time data by " audio response time " the represented audio frequency relevant to progressive.In addition, in the 11st, arrange the delay time data by " interlaced video reaction time " represented interlaced video.In the 12nd, arrange the delay time data by " interlacing audio response time " the represented audio frequency relevant to interlaced video.

Source device is according to the full duplex mark and the half-duplex mark that comprise the E-EDID from receiver apparatus receives, and the sending and receiving based on the CEC signal is determined and carried out half-duplex operation, full-duplex communication or two-way communication.Then, according to definite result, source device carries out the two-way communication with receiver apparatus.

For example, in the situation that source device has the configuration shown in Figure 23, source device can carry out half-duplex operation with the receiver apparatus shown in Figure 23, and source device can not carry out half-duplex operation with the receiver apparatus shown in Figure 24.Then, when the power connection of source device, source device starts communication process, and carries out the two-way communication corresponding to the function of the receiver apparatus that is connected to source device.

Then, the flow chart with reference to Figure 27 illustrates the communication process undertaken by the source device shown in Figure 23.

In step S11, source device determines whether new electronic equipment is connected to source device.For example, source device value that be connected with HPD line 86 according to being applied to, that be called as the voltage of the pin that hot plug detects has determined whether to be connected new electronic equipment (receiver apparatus).

In the situation that determine and do not connect new electronic equipment in step S11, owing to not communicating, so communication process finishes.Simultaneously, in the situation that determining, step S11 connected new electronic equipment, in step S12, switch control unit 121 control switchs 133, and carry out as follows the switching of switch 133: select to select from the CEC signal of the control unit (CPU) of source device and when the data receiver CEC signal from receiver apparatus when data send.

In step S13, source device receives the E-EDID sent by DDC 83 from receiver apparatus.That is to say, when the connection of source device being detected, receiver apparatus reads E-EDID from EDID ROM85, and sends by DDC 83 E-EDID read to source device.Therefore, source device receives the E-EDID sent from receiver apparatus.

In step S14, source device determines whether to carry out the half-duplex operation with receiver apparatus.That is to say, by reference to the E-EDID received from receiver apparatus, source device determines whether to be provided with the half-duplex mark " half-duplex " shown in Figure 26.For example, in the situation that be provided with the half-duplex mark, source device is determined the two-way IP communication that can carry out based on the half-duplex operation method, that is to say half-duplex operation.

In the situation that determine and can carry out half-duplex operation in step S14, in step S15, source device sends to receiver apparatus the signal that indication will be used the IP based on the half-duplex operation method of CEC line 84 and reserved line 88 communicate by letter by switch 133 and CEC line 84, will be for the channel information of the channel of two-way communication as indicating.

That is to say, in the situation that be provided with the half-duplex mark, source device is understood, and receiver apparatus has the configuration shown in Figure 23, and can use CEC line 84 and reserved line 88 to carry out half-duplex operation.Therefore, source device is to the receiver apparatus transmitting channel information, and Notification Sink equipment will carry out half-duplex operation.

In step S16, switch control unit 121 control switchs 133 also carry out the switching of switch 133 as follows: when data send, select from converting unit 131, corresponding to the differential signal of Tx data and when the data receiver selection from the differential signal corresponding to the Rx data of receiver apparatus.

In step S17, each unit of source device carries out communicating by letter with the two-way IP of receiver apparatus according to the half-duplex operation method.Then, communication process finishes.That is to say, when data send, converting unit 131 will be converted to differential signal from the Tx data of control unit (CPU) supply, form a part signal of the differential signal obtained by conversion to switch 133 supplies, and pass through reserved line 88 to receiver apparatus supply another part signal.Switch 133 sends from the part signal of converting unit 131 supplies to receiver apparatus by CEC line 84.Therefore, send the differential signal corresponding to the Tx data from source device to receiver apparatus.

In addition, when data receiver, decoding unit 132 receives the differential signal corresponding to the Rx data sent from receiver apparatus.That is to say, the part signal that switch 133 receives corresponding to the differential signal of Rx data, wherein this differential signal sends from receiver apparatus by CEC line 84, and switch 133 supplies to decoding unit 132 part signal received.Under the control of timing control unit 122, the differential signal that decoding unit 132 will consist of the part signal from switch 133 supplies and the part signal of supplying by reserved line 88 from receiver apparatus is decoded as the Rx data as initial data, and to control unit (CPU) output Rx data.

Therefore, source device sends and receives such as the various data of controlling data, pixel data and voice data from receiver apparatus to receiver apparatus.

Simultaneously, in the situation that determine in step S14 and can not carry out half-duplex operation, source device carries out the two-way communication with receiver apparatus by the sending and receiving that carries out the CEC signal in step S18.Then, communication process finishes.

That is to say, source device, by when data send, by switch 133 and CEC line 84, to receiver apparatus, sending the CEC signal and receive the CEC signal sent from receiver apparatus by switch 133 and CEC line 84 when the data receiver, comes send and receive the control data from receiver apparatus to receiver apparatus.

As mentioned above, because the data that will send with selection and the data mode that will receive are carried out the switching of switch 133, and by carrying out with the half-duplex operation of receiver apparatus with CEC line 84 and reserved line, the IP based on the half-duplex operation method communicates by letter, therefore in the compatibility maintained with traditional HDMI, can carry out high-speed bidirectional and communicate by letter.

In addition, as in source device, when the power connection of receiver apparatus, receiver apparatus starts communication process and carries out the two-way communication with source device.

Then, the communication process undertaken by the receiver apparatus shown in Figure 23 with reference to the flowchart text of Figure 28.

In step S41, receiver apparatus determines whether new electronic equipment (source device) is connected to receiver apparatus.For example, receiver apparatus value that be connected with HPD line 86 according to being applied to, that be called as the voltage of the pin that hot plug detects has determined whether to be connected new electronic equipment.

In the situation that determine and do not connect new electronic equipment in step S41, owing to not communicating, so communication process finishes.Simultaneously, in the situation that determining, step S41 connected new electronic equipment, in step S42, switch control unit 124 control switchs 135, and carry out as follows the switching of switch 135: select to select from the CEC signal of the control unit (CPU) of receiver apparatus and when the data receiver CEC signal from source device when data send.

In step S43, receiver apparatus reads E-EDID from EDID ROM 85, and sends by DDC83 the E-EDID read to source device.

In step S44, source device determines whether to have received the channel information sent from source device.

That is to say, come to send the channel information of indication for the channel of two-way communication from source device according to the function of source device and receiver apparatus.For example, in the situation that source of configuration equipment as illustrated in fig. 23, source device and receiver apparatus can be used CEC line 84 and reserved line 88 to carry out half-duplex operation.Therefore, send the channel information that indication will be used the IP of CEC line 84 and reserved line 88 to communicate by letter from source device to receiver apparatus.Receiver apparatus receives the channel information sent by switch 135 and CEC line 84 from source device, and definite this channel information that received.

Simultaneously, in the situation that source device does not have the function of carrying out half-duplex operation, owing to not having from source device to the receiver apparatus transmitting channel information, so receiver apparatus determines also there is no receiving channel information.

In the situation that determine and received channel information in step S44, process and proceed to step S45.Switch control unit 124 control switchs 135 also carry out the switching of switch 135 as follows: select the differential signal corresponding to the Rx data from converting unit 134 when data send, and select the differential signal corresponding to the Tx data from source device when data receiver.

In step S46, source device carries out communicating by letter with the two-way IP of source device according to the half-duplex operation method.Then, communication process finishes.That is to say, in the situation that timing control unit 123, when data send, the Rx data that converting unit 134 will be supplied from the control unit (CPU) of receiver apparatus are converted to differential signal, form a part signal of the differential signal obtained by conversion to switch 135 supplies, and pass through reserved line 88 to source device supply another part signal.Switch 135 sends from the part signal of converting unit 134 supplies to source device by CEC line 84.Therefore, send the differential signal corresponding to the Rx data from receiver apparatus to source device.

In addition, when data receiver, decoding unit 136 receives the differential signal corresponding to the Tx data sent from source device.That is to say, the part signal that switch 135 receives corresponding to the differential signal of Tx data, wherein this differential signal sends from source device by CEC line 84, and switch 135 supplies to decoding unit 136 part signal received.The differential signal that decoding unit 136 will consist of the part signal from switch 135 supplies and the part signal of supplying by reserved line 88 from source device is decoded as the Tx data as initial data, and to control unit (CPU) output Tx data.

Therefore, receiver apparatus sends and receives such as the various data of controlling data, pixel data and voice data from source device to source device.

Simultaneously, in the situation that determine there is no receiving channel information in step S44, receiver apparatus carries out the two-way communication with source device by the sending and receiving that carries out the CEC signal in step S47.Then, communication process finishes.

That is to say, receiver apparatus, by when data send, by switch 133 and CEC line 84, to source device, sending the CEC signal and receive the CEC signal sent from source device by switch 133 and CEC line 84 when the data receiver, comes send and receive the control data from source device to source device.

Therefore, when receiving channel information, receiver apparatus is by being used CEC line 84 and reserved line 88 to carry out the half-duplex operation with receiver apparatus.

As mentioned above, because receiver apparatus carries out the switching of switch 135 as follows: the data that selection will send and the data that will receive, and receiver apparatus is by being used CEC line 84 and reserved line 88 to carry out the half-duplex operation with source device, therefore can in the compatibility maintained with traditional HDMI, carries out high-speed bidirectional and communicate by letter.

In addition, in the situation that source of configuration equipment as illustrated in fig. 24, in communication process, source device determines according to the full duplex mark comprised in E-EDID whether receiver apparatus has the function of carrying out full-duplex communication, and carries out corresponding to the two-way communication of determining result.

Then, the communication process undertaken by the source device shown in Figure 24 with reference to the flowchart text of Figure 29.

In step S71, source device determines whether new electronic equipment is connected to source device.In the situation that determine and do not connect new electronic equipment in step S71, owing to not communicating, so communication process finishes.

Simultaneously, in the situation that determining, step S71 connected new electronic equipment, in step S72, switch control unit 171 control switchs 181 and switch 182, and carry out as follows the switching of switch 181 and switch 182: when sending, data selected from the SDA signal of the control unit (CPU) of source device and the SCL signal of being selected from the control unit (CPU) of source device by switch 182 by switch 181, and the SDA signal of being selected from receiver apparatus by switch 181 when data receiver.

In step S73, switch control unit 121 control switchs 133 also carry out the switching of switch 133 as follows: select the CEC signal from the control unit (CPU) of source device when data send, and select the CEC signal from receiver apparatus when data receiver.

In step S74, source device receives the E-EDID by sda line 191 transmissions of DDC 83 from receiver apparatus.That is to say, when the connection of source device being detected, receiver apparatus reads E-EDID from EDIDROM85, and sends by the sda line 191 of DDC 83 E-EDID read to source device.Therefore, source device receives the E-EDID sent from receiver apparatus.

In step S75, source device determines whether to carry out the full-duplex communication with receiver apparatus.That is to say, the E-EDID that the source device reference receives from receiver apparatus, and determine whether to be provided with the full duplex mark " full duplex " shown in Figure 26.For example, in the situation that be provided with the full duplex mark, source device is determined the two-way IP communication that can carry out based on duplex communication method, that is to say full-duplex communication.

In the situation that determine and can carry out full-duplex communication in step S76, in step S76, switch control unit 171 control switchs 181 and switch 182, and carry out as follows the switching of switch 181 and switch 182: select the differential signal corresponding to the Rx data from receiver apparatus when data receiver.

That is to say, switch control unit 171 carries out the switching of switch 181 and switch 182 as follows: when data receiver, part signal from formation corresponding to the differential signal of Rx data, selected the part signal sent by sda line 191 by switch 181, and selected the part signal sent by scl line 192 by switch 182.

Owing to after from receiver apparatus to source device, sending E-EDID, not using sda line 191 and the scl line 192 that forms DDC 83, due to the SDA signal that does not carry out being undertaken by sda line 191 and scl line 192 and the sending and receiving of SCL signal, therefore sda line 191 and scl line 192 carry out the switching of switch 181 and switch 182, so that can be used as the transmission path of the Rx data in full-duplex communication.

In step S77, source device sends indication by switch 133 and CEC line 84 to receiver apparatus will be used CEC line 84 and reserved line 88; And sda line 191 and scl line 192, the IP based on duplex communication method communicate by letter, the channel information as indication for the channel of two-way communication.

That is to say, in the situation that be provided with the full duplex mark, source device is understood, and receiver apparatus has the configuration shown in Figure 24, and can use CEC line 84 and reserved line 88; And sda line 191 and scl line 192 carry out full-duplex communication.Therefore, source device is to the receiver apparatus transmitting channel information, and Notification Sink equipment will carry out full-duplex communication.

In step S78, switch control unit 121 control switchs 133 also carry out the switching of switch 133 as follows: when data send selection from converting unit 131, corresponding to the differential signal of Tx data.Be that switch control unit 121 carries out the switching of switch 133 as follows: select the part signal corresponding to the differential signal of Tx data, wherein this part signal 133 supplies from converting unit 131 to switch.

In step S79, source device carries out communicating by letter with the two-way IP of receiver apparatus according to duplex communication method.Then, communication process finishes.That is to say, when data send, converting unit 131 will be converted to differential signal from the Tx data of control unit (CPU) supply, form a part signal of the differential signal obtained by conversion to switch 133 supplies, and pass through reserved line 88 to receiver apparatus supply another part signal.Switch 133 sends from the part signal of converting unit 131 supplies to receiver apparatus by CEC line 84.Therefore, send the differential signal corresponding to the Tx data from source device to receiver apparatus.

In addition, when data receiver, decoding unit 183 receives the differential signal corresponding to the Rx data sent from receiver apparatus.That is to say, the part signal that switch 181 receives corresponding to the differential signal of Rx data, wherein this part signal sends from receiver apparatus by sda line 191, and switch 181 supplies to decoding unit 183 part signal received.In addition, another part signal that switch 182 receives corresponding to the differential signal of Rx data, wherein this part signal sends by scl line 192 from receiver apparatus, and the part signal received to decoding unit 183 supplies.The differential signal that decoding unit 183 will consist of the part signal from switch 181 and switch 182 supplies is converted to the Rx data as initial data, and to control unit (CPU) output Rx data.

Therefore, source device sends and receives such as the various data of controlling data, pixel data and voice data from receiver apparatus to receiver apparatus.

In addition, in the situation that determine in step S75 and can not carry out full-duplex communication, source device carries out the two-way communication with receiver apparatus by the sending and receiving that carries out the CEC signal in step S80.Then, communication process finishes.

That is to say, source device, by when data send, by switch 133 and CEC line 84, to receiver apparatus, sending the CEC signal and receive the CEC signal sent from receiver apparatus by switch 133 and CEC line 84 when the data receiver, comes send and receive the control data from receiver apparatus to receiver apparatus.

Therefore, source device is with reference to the full duplex mark, and by using CEC line 84 and reserved line 88; And sda line 191 and scl line 192 carries out full-duplex communication with the receiver apparatus that can carry out full-duplex communication.

As mentioned above, in the mode of selecting the data that will send and the data that will receive, carry out the switching of switch 133, switch 181 and switch 182, and by using CEC line 84 and reserved line 88; And sda line 191 and scl line 192 carry out the full-duplex communication with receiver apparatus.Therefore, can in the compatibility maintained with traditional HDMI, carry out high-speed bidirectional communicates by letter.

In addition, also in the situation that configure as illustrated in fig. 24 receiver apparatus, receiver communicates process and carries out the two-way communication with source device, the same in the receiver apparatus as shown in Figure 23.

Then, the communication process undertaken by the receiver apparatus shown in Figure 24 with reference to the flowchart text of Figure 30.

In step S111, receiver apparatus determines whether new electronic equipment (source device) is connected to receiver apparatus.In the situation that determined in step S111 and do not connect new electronic equipment, owing to not communicating, so communication process finishes.

Simultaneously, in the situation that determine and connected new electronic equipment in step S111, in step S112, switch control unit 172 control switchs 185 and switch 186, and carry out as follows the switching of switch 185 and switch 186: when data send, by switch 185, selected to be selected from the SDA signal of source device and the SCL signal of being selected from source device by switch 186 by switch 185 from the SDA signal of the control unit (CPU) of receiver apparatus and when the data receiver.

In step S113, switch control unit 124 control switchs 135 also carry out the switching of switch 135 as follows: when data send, selection is from the CEC signal of the control unit (CPU) of receiver apparatus, and selects the CEC signal from source device when data receiver.

In step S114, receiver apparatus reads E-EDID from EDID ROM 85, and sends by the sda line 191 of switch 185 and DDC 83 E-EDID read to source device.

In step S115, receiver apparatus determines whether to have received the channel information sent from source device.

That is to say, come to send the channel information of indication for the channel of two-way communication from source device according to the function of source device and receiver apparatus.For example, in the situation that source of configuration equipment as illustrated in fig. 24, source device and receiver apparatus can carry out full-duplex communication.Therefore, send indication from source device to receiver apparatus and will be used CEC line 84 and reserved line 88; And the IP based on duplex communication method of sda line 191 and scl line 192 channel information of communicating by letter.Therefore, receiver apparatus receives the channel information sent by switch 135 and CEC line 84 from source device, and definite this channel information that received.

Simultaneously, in the situation that source device does not have the function of carrying out full-duplex communication, not from source device to the receiver apparatus transmitting channel information.Therefore, receiver apparatus is determined not receiving channel information.

In the situation that determine and received channel information in step S115, process and proceed to step S116.Switch control unit 172 control switchs 185 and switch 186, and carry out as follows the switching of switch 185 and switch 186: when sending, data select the differential signal corresponding to the Rx data from converting unit 184.

In step S117, switch control unit 124 control switchs 135 also carry out the switching of switch 135 as follows: select the differential signal corresponding to the Tx data from source device when data receiver.

In step S118, receiver apparatus carries out communicating by letter with the two-way IP of source device according to duplex communication method.Then, communication process finishes.That is to say, when data send, the Rx data that converting unit 184 will be supplied from the control unit (CPU) of receiver apparatus are converted to differential signal, form a part signal of the differential signal obtained by conversion to switch 185 supplies, and supply another part signals to switch 186.Switch 185 and switch 186 send from the part signal of converting unit 184 supplies to source device by sda line 191 and sda line 191.Therefore, send the differential signal corresponding to the Rx data from receiver apparatus to source device.

In addition, when data receiver, decoding unit 136 receives the differential signal corresponding to the Tx data sent from source device.That is to say, the part signal that switch 135 receives corresponding to the differential signal of Tx data, wherein this differential signal sends from source device by CEC line 84, and switch 135 supplies to decoding unit 136 part signal received.Decoding unit 136 will be decoded as the Tx data as initial data by the part signal from switch 135 supply and the differential signal formed from the part signal of source device supply by reserved line 88, and to control unit (CPU) output Tx data.

Therefore, receiver apparatus sends and receives such as the various data of controlling data, pixel data and voice data from source device to source device.

Simultaneously, in the situation that determine not receiving channel information in step S115, in step S119, receiver apparatus carries out the two-way communication with source device by the sending and receiving that carries out the CEC signal.Then, this communication process finishes.

Therefore, when receiving channel information, receiver apparatus is by being used CEC line 84 and reserved line 88; And sda line 191 and scl line 192 carry out the duplex communication with receiver apparatus.

As mentioned above, receiver apparatus carries out the switching of switch 135, switch 185 and switch 186 with the data of selecting to be sent out and the mode of wanting received data, and by using CEC line 84 and reserved line 88; And sda line 191 and scl line 192 carry out the duplex communication with source device.Therefore, can carry out high-speed bidirectional in the compatibility maintained with traditional HDMI communicates by letter.

Note, although the source device in the example of Figure 24 has following configuration: converting unit 131 is connected to CEC line 84 and reserved line 88 and decoding unit 183 and is connected to sda line 191 and scl line 192, but source device can have following configuration: converting unit 183 is connected to CEC line 84 and reserved line 88, and converting unit 131 is connected to sda line 191 and scl line 192.

In this case, switch 181 and switch 182 are connected to decoding unit 183 and CEC line 84 and reserved line 88, and switch 133 is connected to converting unit 131 and sda line 191.

In addition, similarly, the receiver apparatus of Figure 24 can have following configuration: converting unit 184 is connected to CEC line 84 and reserved line 88, and decoding unit 136 is connected to sda line 191 and scl line 192.In this case, switch 185 and switch 186 are connected to converting unit 184 and CEC line 84 and reserved line 88, and switch 135 is connected to decoding unit 136 and sda line 191.

In addition, in Figure 23, CEC line 84 and reserved line 88 can be sda line 191 and scl line 192.That is to say, the converting unit 134 of the converting unit 131 of source device and decoding unit 132 and receiver apparatus can be connected to sda line 191 with scl line 192 with decoding unit 136 and communicate by letter so that source device can carry out IP based on the half-duplex operation method with receiver apparatus.In addition, in this case, can reserve the connection that line 88 carrys out detected electrons equipment by use.

In addition, each of source device and receiver apparatus can have two kinds of functions of carrying out half-duplex operation and carrying out full-duplex communication.In this case, source device is communicated by letter with the IP that receiver apparatus can carry out based on half-duplex operation method or duplex communication method according to the function of the electronic equipment be connected.

In the situation that source device and receiver apparatus each there is the function of carrying out half-duplex operation and the function of carrying out full-duplex communication, for example, source device and receiver apparatus are configured as Figure 31.Note, in Figure 31, indicated and those corresponding parts in Figure 23 or Figure 24 by identical mark, and the explanation of omitting by rights those parts.

The high-speed data line interface 28A of source device comprises converting unit 131, decoding unit 132, switch 133, switch 181, switch 182, decoding unit 183, switch control unit 121, timing control unit 122 and switch control unit 171.That is to say, the high-speed data line interface 28A of the source device in Figure 31 has following configuration: timing control unit 122 and decoding unit 132 further be provided at Figure 23 in the high-speed data line interface 28A of the source device shown in Figure 24 in.

In addition, the high-speed data line interface 28A of the receiver apparatus shown in Figure 31 comprises converting unit 134, switch 135, decoding unit 136, converting unit 184, switch 185, switch 186, timing control unit 123, switch control unit 124 and switch control unit 172.That is to say, the receiver apparatus shown in Figure 31 has following configuration: the timing control unit 123 further provide Figure 23 in the receiver apparatus shown in Figure 24 in and converting unit 134.

Next, the communication process that the source device in Figure 31 and receiver apparatus carry out by explanation.

At first, the flow chart with reference to Figure 32 illustrates the communication process that the source device in Figure 31 carries out.Note, because step S151 is similar to respectively in Figure 29 step S71 to the processing of S74 to the processing of S154, so will omit the explanation of step S151 to the processing of S154.

In step S155, source device determines whether to carry out the full-duplex communication with receiver apparatus.That is to say, by reference to the E-EDID received from receiver apparatus, source device determines whether to be provided with the full duplex mark " full duplex " in Figure 26.

In the situation that determine and can carry out full-duplex communication in step S155, that is to say, in the situation that the receiver apparatus shown in Figure 31 or Figure 24 is connected to source device, in step S156, switch control unit 171 control switchs 181 and switch 182 also carry out the switching of switch 181 and switch 182 as follows: receive the differential signal corresponding to the Rx data from receiver apparatus when data receiver.

Simultaneously, in the situation that can't carry out full-duplex communication in step S155, in step S157, source device determines whether to carry out half-duplex operation.That is to say, by reference to received E-EDID, source device determines whether to be provided with the half-duplex mark " half-duplex " in Figure 26.In other words, source device determines whether the receiver apparatus shown in Figure 23 has been connected to source device.

In the situation that determine in step S157 and can carry out half-duplex operation or in the situation that carried out the switching of switch 181 and switch 182 in step S156, source device in step S158 by switch 133 and CEC line 84 to the receiver apparatus transmitting channel information.

At this, in the situation that determine and can carry out full-duplex communication in step S155, because receiver apparatus has the function of carrying out full-duplex communication, so source device will be used CEC line 84 and reserved line 88 by switch 133 and CEC line 84 to receiver apparatus transmission indication; And the IP of sda line 191 and scl line 192 signal of communicating by letter, as channel information.

In addition, in the situation that determine and can carry out half-duplex operation in step S157, because not having the function of carrying out full-duplex communication, receiver apparatus do not there is the function of carrying out half-duplex operation, therefore source device sends to receiver apparatus the signal that indication will be used the IP of CEC line 84 and reserved line 88 to communicate by letter with CEC line 84 by switch 133, as channel information.

In step S159, switch control unit 121 control switchs 133 also carry out the switching of switch 133 as follows: select the differential signal corresponding to the Tx data from converting unit 131 when data send, and when data receiver, select from the receiver apparatus transmission, corresponding to the differential signal of Rx data.Note, in the situation that source device and receiver apparatus carry out full-duplex communication, owing to when source device receives data, by CEC line 84 and reserved line 88, from receiver apparatus, not sending the differential signal corresponding to the Rx data, the differential signal of therefore not supplying corresponding to the Rx data to decoding unit 132.

In step S160, source device carries out communicating by letter with the two-way IP of receiver apparatus.Then, communication process finishes.

That is to say, in the situation that source device carries out the full-duplex communication with receiver apparatus, and in the situation that source device carries out the half-duplex operation with receiver apparatus, when data send, the Tx data that converting unit 131 will be supplied from the control unit (CPU) of source device are converted to differential signal, send by switch 133 and CEC line 84 part signal that forms the differential signal obtained by conversion to receiver apparatus, and send another part signal by reserved line 88 to receiver apparatus.

In addition, in the situation that source device carries out the full-duplex communication with receiver apparatus, when data receiver, decoding unit 183 receive from receiver apparatus, send, corresponding to the differential signal of Rx data, received differential signal is decoded as to the Rx data as initial data, and exports this Rx data to control unit (CPU).

Simultaneously, in the situation that source device carries out the half-duplex operation with receiver apparatus, when data receiver, under the control of timing control unit 122, decoding unit 132 receives the differential signal corresponding to the Rx data sent from receiver apparatus, received differential signal is decoded as to the Rx data as initial data, and to control unit (CPU) output Rx data.

Therefore, source device sends and receives such as the various data of controlling data, pixel data and voice data from receiver apparatus to receiver apparatus.

Simultaneously, in the situation that determine in step S157 and can not carry out half-duplex operation, in step S161, source device carries out the two-way communication with receiver apparatus by the sending and receiving that carries out carrying out the CEC signal by CEC line 84.Then, communication process finishes.

Therefore, source device is with reference to full duplex mark and half-duplex mark, and the function of the receiver apparatus of communicating by letter with it according to source device is carried out full-duplex communication or half-duplex operation.

As mentioned above, according to the function of the receiver apparatus communicated by it, carry out the switching of switch 133, switch 181 and switch 182 in the mode of selecting the data that will send and the data that will receive, and carry out full-duplex communication or half-duplex operation.Therefore, maintaining with the compatible of traditional HDMI and can carry out high-speed bidirectional when having selected better communication means and communicate by letter.

Next, the flow chart with reference to Figure 33 illustrates the communication process that the receiver apparatus in Figure 31 carries out.Note, because step S191 is similar to respectively in Figure 30 step S111 to the processing of S114 to the processing of S194, so will omit the explanation of step S191 to the processing of S194.

In step S195, receiver apparatus receives the channel information sent by switch 135 and CEC line 84 from source device.Note, neither there is the function of carrying out full-duplex communication and also do not there is the function of carrying out half-duplex operation in the situation that be connected to the source device of receiver apparatus, due to not from source device to the receiver apparatus transmitting channel information, so receiver apparatus receiving channel information not.

In step S196, receiver apparatus determines whether to carry out full-duplex communication according to received channel information.For example, received the indication will be used CEC line 84 and reserved line 88; And, in the situation of the IP of sda line 191 and scl line 192 channel information of communicating by letter, receiver apparatus is determined will carry out full-duplex communication.

In the situation that determine and will carry out full-duplex communication in step S196, in step S197, switch control unit 172 control switchs 185 and switch 186, and carry out as follows the switching of switch 185 and switch 186: when data send, select from converting unit 184, corresponding to the differential signal of Rx data.

Simultaneously, in the situation that determine and do not carry out full-duplex communication in step S196, in step S198, receiver apparatus determines whether to carry out half-duplex operation according to received channel information.For example, in the situation that received the channel information that indication will be used the IP of CEC line 84 and reserved line 88 to communicate by letter, receiver apparatus is determined will carry out half-duplex operation.

In the situation that determine in step S198 and will carry out half-duplex operation or in the situation that carry out the switching of switch 185 and switch 186 in step S197, in step S199, switch control unit 124 control switchs 135, and carry out as follows the switching of switch 135: select the differential signal corresponding to the Rx data from converting unit 134 when data send, and select the differential signal corresponding to the Tx data from source device when data receiver.

Note, in the situation that source device and receiver apparatus carry out full-duplex communication, 81 differential signals that send corresponding to the Rx data from converting unit 134 to reflector not owing to when receiver apparatus, sending data, the therefore differential signal corresponding to the Rx data to switch 135 supplies not.

In step S200, receiver apparatus carries out communicating by letter with the two-way IP of source device.Then, communication process finishes.

That is to say, in the situation that receiver apparatus carries out the full-duplex communication with source device, when data send, the Rx data that converting unit 184 will be supplied from the control unit (CPU) of receiver apparatus are converted to differential signal, send by switch 185 and sda line 191 part signal that forms the differential signal obtained by conversion to source device, and send another part signal by switch 186 and scl line 192 to source device.

Simultaneously, in the situation that receiver apparatus carries out the half-duplex operation with source device, when data send, the Rx data that converting unit 134 will be supplied from the control unit (CPU) of receiver apparatus are converted to differential signal, send to reflector 81 part signal that forms the differential signal obtained by conversion by switch 135 and CEC line 84, and send another part signal by reserved line 88 to source device.

In addition, in the situation that receiver apparatus carries out the full-duplex communication with source device, and in the situation that receiver apparatus carries out the half-duplex operation with source device, when data receiver, decoding unit 136 receives the differential signal corresponding to the Tx data sent from source device, received differential signal is decoded as to the Tx data as initial data, and to control unit (CPU) output Tx data.

In addition, in the situation that determine in step S198 and do not carry out half-duplex operation, that is to say, for example, in the situation that transmitting channel information not, in step S201, receiver apparatus carries out the two-way communication with source device by the sending and receiving that carries out the CEC signal.Then, communication process finishes.

Therefore, receiver apparatus according to received channel information, be the function of the source device that communicates with of receiver apparatus, carry out full-duplex communication or half-duplex operation.

As mentioned above, according to the function of the source device communicated by it, carry out the switching of switch 135, switch 185 and switch 186 in the mode of selecting the data that will send and the data that will receive, and carry out full-duplex communication or half-duplex operation.Therefore, maintaining with the compatible of traditional HDMI (R) and can carry out high-speed bidirectional when having selected better communication means and communicate by letter.

In addition, comprise CEC line 84 by use and be connected source device and receiver apparatus with the HDMI cable 1 of reserved line 88 and sda line 191 and scl line 192, wherein CEC line 84 and reserved line 88 are connected as differential twisted pair, and conductively-closed and be grounding to ground wire, and sda line 191 and scl line 192 are connected as differential twisted pair, conductively-closed and be grounding to ground wire, the high-speed bidirectional IP that can carry out based on half-duplex operation method or duplex communication method in the compatibility maintained with traditional HDMI cable communicates by letter.

Next, can carry out above-mentioned a series of processing by specialized hardware or software.In the situation that carry out a series of processing by software, to middle programs that forms software of installing such as the microcomputers of controlling source device and receiver apparatus.

Now, Figure 34 shows the example of configuration of the embodiment of the computer that the program of carrying out above-mentioned series of processes has been installed therein.

Record this program in EEPROM (Electrically Erasable Read Only Memory) 305 of the recording medium that can comprise in computer in conduct in advance or ROM 303.

Perhaps, storage (record) program temporarily or for good and all in can be at removable recording medium, such as floppy disk, CD-ROM (compact-disc read-only memory), MO (magneto-optic) dish, DVD (digital universal disc), disk or semiconductor memory.This removable recording medium can be provided as so-called canned software.

At this, except installing from above-mentioned removable medium to computer, can send program from download website by the artificial satellite for digital satellite broadcasting to computer with wireless mode, or can send program by the network such as LAN or internet to computer with wired mode, and computer can receive via the input/output interface 306 of computer the program of above-mentioned transmission, and in the EEPROM 305 comprised in computer, this program is installed.

Computer comprises CPU (CPU) 302.Input/output interface 306 is connected to CPU 302 by bus 301.The program that CPU 302 will store in ROM (read-only memory) 303 or EEPROM 305 is loaded into RAM (random access memory) 304, and carries out this program.Therefore, the processing that CPU 302 carries out based on above-mentioned flow chart, or the processing of carrying out according to the configuration of above-mentioned calcspar.

At this, in this specification, not necessarily process and describe for making computer carry out the treatment step of the program of various processing according to the order that is described to flow chart in chronological order.This treatment step comprises the processing that parallel or independent (for example, parallel processing or object-based processing) carried out.In addition, can be by single computer processing, or can be by a plurality of computers with the distributed way handling procedure.

In the configuration example shown in above-mentioned Figure 19, the circuit of communicating by letter for LAN can independently form with the electrical specifications be defined for DDC.Figure 35 shows another configuration example with similar effect.

This example has following feature: wherein, realizing the transmission of Audio and Video data by the use individual cable, the exchange of the facility information be connected and checking, in the interface that the communication of device control data is communicated by letter with LAN, provide following configuration: wherein, two couple by differential transmission path carries out LAN communication as one-way communication, and send the notice of the connection status of this interface according at least one DC bias potential of transmission path, and in addition, with respect to LAN, communicate by letter, with time division way, exchange and communicating by letter of checking at the facility information for being connected are used at least two transmission paths.

Source device comprises lan signal transtation mission circuit 611, terminating resistor device 612 and 613, AC coupling capacitor 614 to 617, lan signal receiving circuit 618, inverter 620, resistor 621, form resistor 622 and the capacitor 623 of low pass filter, comparator 624, pull-down-resistor 631, form resistor 632 and the capacitor 633 of low pass filter, comparator 634, NOR door 640, analog switch 641 to 644, inverter 645, analog switch 646 and 747, DDC transceiver 651 and 652, with pullup resistor 653 and 654.

In addition, receiver apparatus 602 comprises lan signal transtation mission circuit 661, terminating resistor device 662 and 663, AC coupling capacitor 664 to 667, lan signal receiving circuit 668, pull-down-resistor 671, the resistor 672 that forms low pass filter and capacitor 673, comparator 674, choke 681, the resistor 682 and 683 be connected in series between electrical source voltage and reference potential, analog switch 691 to 694, inverter 695, analog switch 696 and 697, DDC transceiver 701 and 702 and pullup resistor 703 and 704.

HDMI cable 1 comprises the differential transmission path be comprised of reserved line 801 and scl line; And the differential transmission path formed by sda line 804 and HPD line 802.Be formed for source terminal 811 to 814 and the receiver-side terminal 821 to 824 of those lines.

Reserved line 801 and scl line 803; And sda line 804 and HPD line 802 are connected as differential twisted pair.

In source device, terminal 811 and 813 by AC coupling capacitor 614 and 605 and analog switch 641 and 642 be connected to transtation mission circuit 611 and the terminating resistor device 612 that sends LAN transmitted signal SG 611 to receiver.Terminal 814 and 812 by AC coupling capacitor 616 and 617 and analog switch 643 and 644 be connected to receiving circuit 618 and the terminating resistor device 613 that receives lan signal from receiver apparatus.

In receiver apparatus, terminal 821 to 824 by AC coupling capacitor 664,665,666 and 667 and analog switch 691 to 694 be connected to transtation mission circuit, receiving circuit 668 and terminating resistor device 662 and 663.Analog switch 641 to 644 and 691 to 694 is when carrying out LAN communicate by letter time conduction and disconnection when carrying out DDC communication.

Source device is connected to DDC transceiver 651 and 652 and pullup resistor 653 and 654 by difference analogue switch 646 and 647 by terminal 813 and terminal 814.

Receiver apparatus is connected to DDC transceiver 701 and 702 and pullup resistor 703 by analog switch 696 and 697 by terminal 823 and terminal 824.Analog switch 646 with 647 when carrying out DDC communicate by letter time conduction and disconnection when carrying out LAN communication.

The mechanism that identifies the e-HDMI compatible equipment according to the electromotive force of reserving line 801 is substantially similar to the mechanism in the example shown in Figure 19, except carried out the resistor 62 of drive source equipment 601 by inverter 620.

When the input to inverter 620, while being high, resistor 621 is as pull-down-resistor.Therefore, when looking from receiver apparatus, obtain and want to like your calcium channel 0-V state with the state when being connected the incompatible equipment of e-HDMI.Therefore, the signal SG623 of the compatible sign of the e-HDMI result of indication receiver apparatus is low.Analog switch 691 to 694 disconnections of controlling according to signal SG623, and the analog switch 696 and 697 of controlling according to the signal by being obtained by anti-phase this signal of inverter 695 SG623 is placed in conduction.Therefore, receiver apparatus 602 disconnects scl line 803 and sda line 804 from the LAN emitter/receiver, and arrives the state that receiver apparatus 602 wherein is connected to the DDC emitter/receiver.

Simultaneously, in source device, to the input of inverter 620, be also the input to NOR door 640, and the output SG614 of NOR door 640 is low.Analog switch 641 to 644 disconnections of controlling according to the output signal SG614 of NOR door 640, and the analog switch 646 and 647 of controlling according to the signal by being obtained by anti-phase this signal of inverter 645 SG614 is placed in conduction.Therefore, source device 601 also disconnects scl line 803 and sda line 804 from the LAN emitter/receiver, and arrives the state that source device 601 wherein is connected to the DDC emitter/receiver.

On the contrary, when the input to inverter 620 is low, source device and receiver apparatus all disconnect scl line 803 and sda line 804 from the DDC emitter/receiver, and enter the state that wherein source device and receiver apparatus are connected to the LAN emitter/receiver.

Check that according to the DC bias potential of HPD line 802 circuit 631 to 634 and 681 to 683 of connection has those the function be similar in the example shown in Figure 19.That is to say, except above-mentioned LAN communication, by HPD line 802, according to the DC bias level, to source device, send the fact that HDMI cable 1 is connected to receiver apparatus.When cable 1 is connected to receiver apparatus, the resistor 682 in receiver apparatus and 683 and choke 681 make HPD line 802 by terminal 822 at about 4V place bias voltage.

Source device is by using the low pass filter be comprised of resistor 632 and capacitor 633 to extract the DC bias voltage of HPD line 802, and for example, by come comparison DC bias voltage and reference potential Vref2 (1.4V) with comparator 634.When cable 1 is not connected to receiver apparatus, due to pull-down-resistor 631, the electromotive force of terminal 812 is lower than reference potential Vref2.When cable 1 is connected to receiver apparatus, the electromotive force of terminal 812 is higher than reference potential Vref2.Therefore, wherein the output signal SG613 of comparator 634 be that the indication of high state has connected cable 1 and receiver apparatus.Simultaneously, wherein the output signal SG613 of comparator 634 is that low state has been indicated disconnected cable 1 and receiver apparatus.

As mentioned above, according to the configuration example shown in Figure 35, realizing the transmission of Audio and Video data by the use individual cable, the exchange of the facility information be connected and checking, in the interface that the communication of device control data is communicated by letter with LAN, following configuration is provided: two couple by differential transmission path carries out LAN communication as one-way communication, and send the notice of the connection status of interface according at least one DC bias potential of transmission path, and in addition, with respect to LAN, communicate by letter, with time division way, exchange and communicating by letter of checking at the facility information for being connected are used at least two transmission paths.Therefore, carry out the time-division as follows: by distribute scl line and sda line to the time period for being connected with the LAN telecommunication circuit and time period for being connected with the DDC circuit with switch.Divide by this, can be formed for independently the circuit that LAN communicates by letter with the electrical specifications be defined for DDC.Therefore, can realize at low cost stable and LAN communication reliably.

Note, can provide rather than provide the resistor 621 shown in Figure 35 in source device at HDMI cable 1.In this case, the reserved line 801 and the line (holding wire) that is connected to power supply (electrical source voltage) in the line provided in HDMI cable 1 is provided each end of resistor 621.

In addition, can in HDMI cable 1, provide and the pullup resistor 671 shown in Figure 35 and resistor 683 are not provided in receiver apparatus.In this case, the reserved line 801 and the line (ground wire) that is connected to ground (reference potential) in the line provided in HDMI cable 1 is provided each end of pull-down-resistor 671.In addition, the HPD line 802 and the line (ground wire) that is connected to ground (reference potential) in the line provided in HDMI cable 1 is provided each end of resistor 683.

At this, be used in by SDA and SCL on the 1.5k Ω at H place and draw with drop-down realization of the Low ESR at the L place and communicate by letter, and also by CEC, be used on the 27k Ω at H place and draw with drop-down realization of the Low ESR at the L place and communicate by letter.LAN function with high-speed data communication of the termination for realizing wherein needing coupling and stopping transmission line maintains above-mentioned functions in order to realize that with the compatibility of existing HDMI may be difficult simultaneously.

Figure 19 and 35 configuration example can be avoided this problem.That is to say, in the configuration example of Figure 19, provide following configuration: reserve line and HPD line by use and carry out the right full-duplex communication based on the one-way communication operation as differential pair, avoid using SDA, SCL and CEC line simultaneously.In addition, in the configuration example of Figure 35, following configuration is provided: carry out two couple of full-duplex communication operation, wherein by HPD line and sda line to scl line and reserved line to forming two differential pairs, and by by each of two differential pairs, carrying out one-way communication.

Figure 36 (A) to (E) shows the two-way communication waveform in the configuration example of Figure 19 or Figure 35.

Figure 36 (A) shows the waveform of the signal sent from source device, Figure 36 (B) shows the waveform of the signal received at the receiver apparatus place, Figure 36 (C) shows the waveform of the signal that flows through cable, Figure 36 (D) shows the signal received at the source device place, and Figure 36 (E) shows the waveform of the signal sent from source device.As from Figure 36 clearly, by the configuration example of Figure 19 or Figure 35, can realize splendid two-way communication.

Note, although the interface based on meeting the HDMI standard provides explanation in the above-described embodiments as the hypothesis of the transmission path for connecting source device and receiver apparatus, other similarly send standard is also available.In addition, although provide, wherein use the video camera Machine Records Unit as source device and use the example of electromotive force receiver as receiver apparatus, can use other transmitting apparatus and receiving equipment.

In addition, although carry out in the above-described embodiments two-way IP communication between source device and receiver apparatus, can carry out two-way communication by using the agreement different from IP.In addition, although show in the above-described embodiments by the situation of HDMI cable connecting electronic equipment, the present invention can be used for carrying out with wireless mode the situation of the connection between electronic equipment similarly.

Industrial usability

The present invention allows externally on equipment side, to show smoothly the additional information about each vision signal, and has improved and by the user, vision signal has been selected the performance of operation.The present invention can be used for for example connecting by the HDMI interface AV system of video camera Machine Records Unit and television receiver.

Claims (10)

1. a transmitting apparatus is characterized in that comprising:
Signal transmitting unit, it sends the vision signal as differential signal by the transmission path HDMI that uses a plurality of TMDS channels to external equipment;
Communication unit, its reserved line that forms described transmission path HDMI by use carries out two-way communication;
The vision signal memory cell, its storage can be by each vision signal of using signal transmitting unit to send to external equipment;
Additional information storage unit, it stores the additional information of each vision signal about storing in described vision signal memory cell; And
Communication control unit, it is controlled as follows: via using communication unit to send the additional information of each vision signal about storing by described reserved alignment external equipment in described additional information storage unit;
Wherein, communication control unit sends the notice of the connection status of high-speed data line interface according at least one DC bias potential of described transmission path.
2. according to the transmitting apparatus of claim 1, it is characterized in that
Described additional information is text message or image information or text message and image information.
3. according to the transmitting apparatus of claim 1, it is characterized in that
Described communication control unit carries out,
When communication unit receive from external equipment, send, during for the sending request of additional information,
Control as follows: by using communication unit, send the additional information of each vision signal about storing to external equipment in described additional information storage unit.
4. according to the transmitting apparatus of claim 1, it is characterized in that
Described communication control unit further carries out,
When communication unit receives the information of the selection about concrete vision signal sent from external equipment,
Control as follows: by using signal transmitting unit, be sent in the vision signal of storing in described vision signal memory cell the vision signal corresponding to the information of selection to external equipment.
5. the video signal transmission for transmitting apparatus, described transmitting apparatus comprises
Signal transmitting unit, it sends the vision signal as differential signal by the transmission path HDMI that uses a plurality of TMDS channels to external equipment,
Communication unit, its reserved line that forms described transmission path HDMI by use carries out two-way communication,
The vision signal memory cell, each vision signal that its storage can send to external equipment by the use signal transmitting unit, and
Additional information storage unit, it stores the additional information of each vision signal about storing in described vision signal memory cell, and the described video signal transmission for transmitting apparatus is characterised in that and comprises:
The connection status notifying process, send the notice of the connection status of high-speed data line interface according at least one DC bias potential of described transmission path;
Send request receiving step, by use communication unit to receive to send from external equipment for the sending request of additional information,
The additional information forwarding step, in response to described sending request of receiving in sending request receiving step, via using communication unit to send the additional information of each vision signal about storing by described reserved alignment external equipment in additional information storage unit;
Selection information receiving step, by using communication unit, receive the information of the selection about concrete vision signal sent from external equipment according to the additional information about each vision signal sent in described additional information forwarding step; And
The vision signal forwarding step, by use signal transmitting unit to external equipment, be sent in the vision signal of storing in the vision signal memory cell, corresponding to the vision signal of the selection information received at described selection information receiving step.
6. a receiving equipment is characterized in that comprising:
Signal receiving unit, used the transmission path HDMI of a plurality of TMDS channels to receive the vision signal as differential signal from external equipment;
Communication unit, the reserved line that forms described transmission path HDMI by use carries out two-way communication;
Image-display units, process the vision signal received at the signal receiving unit place in order to show image; And
The additional information display unit, show the additional information about each vision signal when via communication unit, by described reserved line, receiving the additional information about each vision signal that can send from external equipment, wherein, described additional information sends from external equipment, and the notice of the connection status of high-speed data line interface is sent according at least one DC bias potential of described transmission path.
7. according to the receiving equipment of claim 6, it is characterized in that,
Described additional information is text message or image information or text message and image information.
8. according to the receiving equipment of claim 6, it is characterized in that further comprising:
Communication control unit, it is controlled as follows: by using communication unit, to external equipment, send sending request for the additional information about each vision signal.
9. according to the receiving equipment of claim 6, it is characterized in that further comprising:
User operation unit, it allows the user to select concrete vision signal according to the additional information about each vision signal shown on the additional information display unit; And
Communication control unit, it is controlled as follows: by using communication unit, send the information of the selection about concrete vision signal of being selected by user operation unit to external equipment.
10. the video signal receiving method for receiving equipment, described receiving equipment comprises
Signal receiving unit, it uses the transmission path HDMI of a plurality of TMDS channels to receive the vision signal as differential signal from external equipment,
Communication unit, its reserved line that forms described transmission path HDMI by use carries out two-way communication, and
Image-display units, it is processed the vision signal received at the signal receiving unit place and shows image, and the described video signal receiving method for receiving equipment is characterized in that comprising:
The connection status notifying process, send the notice of the connection status of high-speed data line interface according at least one DC bias potential of described transmission path;
Send request forwarding step, send request by using communication unit to send additional information by described reserved alignment external equipment, it is the request for the additional information about each vision signal that can send from external equipment that this additional information sends request;
The additional information receiving step, in response to sending request in the described additional information sent in sending request forwarding step, receive the additional information of each vision signal about sending from external equipment by using communication unit;
The additional information step display, be presented at the additional information about each vision signal received in the additional information receiving step;
Selection information forwarding step, send the selection information about the concrete vision signal according to about showing in the additional information step display, select about the additional information of each vision signal by using communication unit to external equipment; And
The video reception step, receive by using signal receiving unit the concrete vision signal sent from external equipment according to the selection information sent in described selection information forwarding step.
CN2007800494207A 2006-11-07 2007-11-07 Transmitting device, video signal transmitting method in transmitting device, recieving device and video signal recieving method in recieving device CN101573977B (en)

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CN201310497100.5A CN103533282B (en) 2006-11-07 2007-11-07 Transmission equipment, sending method, reception equipment and method of reseptance
CN201310496974.9A CN103561226B (en) 2006-11-07 2007-11-07 Transmission equipment, sending method, reception equipment and method of reseptance
CN201610642714.1A CN106210589B (en) 2006-11-07 2007-11-07 A kind of communication system for being communicated between sending device and receiving device
CN201310498402.4A CN103533283B (en) 2006-11-07 2007-11-07 Send equipment, sending method, receiving device and method of reseptance
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CN201310497100.5A Division CN103533282B (en) 2006-11-07 2007-11-07 Transmission equipment, sending method, reception equipment and method of reseptance
CN201610642714.1A Division CN106210589B (en) 2006-11-07 2007-11-07 A kind of communication system for being communicated between sending device and receiving device
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