CN101197985B - Data transfer device and transfer control method - Google Patents
Data transfer device and transfer control method Download PDFInfo
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- CN101197985B CN101197985B CN2007101947244A CN200710194724A CN101197985B CN 101197985 B CN101197985 B CN 101197985B CN 2007101947244 A CN2007101947244 A CN 2007101947244A CN 200710194724 A CN200710194724 A CN 200710194724A CN 101197985 B CN101197985 B CN 101197985B
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Abstract
A video/audio transmitting device according to the present invention comprises a transmitter, a controller for controlling the transmitter, and a plurality of memory elements, wherein the transmitter comprises a video/audio transmitter for transmitting a video/audio signal to a receiving device outside and a device information obtaining unit for receiving from the receiving device device information including information relating to a receiving function of the receiving device and transmitting the received information to the controller. The plurality of memory elements temporarily stores therein the device information. The controller performs parallel processing of writing the device information in at least one of the plurality of memory elements and reading the device information from at least one of the other memory elements and controls the transmitter based on the device information sequentially read from the plurality of memory elements in the parallel processing.
Description
Technical field
The present invention relates to data transmission device and data transfer control method, relate more specifically to be used to obtain the device of the information relevant with receiving system with transmission.
Background technology
In recent years, in order to send video data and voice data to receiving system from dispensing device, adopted HDMI (HDMI (High Definition Multimedia Interface)) communication, the example of dispensing device is DVD player and DVD register, and the example of receiving system is Digital Television and amplifier.When dispensing device detects self by the HDMI cable when linking to each other with receiving system, just communicate by letter from end device (receiving system) being retrieved the data structure that is called EDID (expanded display recognition data) by DDC (DDC), send video data and the voice data that is suitable for being connected to self then to end device, wherein, in being called the data structure of EDID, record distinctive performance of each receiving system (comprising the information relevant) and performance data, thereby determine performance end device with receiving function.
Fig. 2 sends the transfer process of EDID according to routine techniques from receiving system to dispensing device.The HDMI-transmission LSI 202 that dispensing device 201 comprises component computer 203 and is used for the transmission of video and voice data is controlled.HDMI-sends that LSI 202 comprises the video/audio transmitter 205 that is used to send video and voice data and the DDC buffer 204 in the zone of the information that obtains by DDC signal post as storage.
When sending video and voice data, dispensing device 201 obtained the EDID information of receiving system 206 before sending content, can be by the video and the audio-frequency information of receiving system 206 receptions to obtain.EDID information is obtained by DDC communication.Dispensing device 201 requests are by the address of EDID standard (VESAENHANCED EXTENDED DISPLAY IDENTIFICATION DATASTANDARD) appointment, to read EDID information.With 128 bytes is the piece composition EDID information of unit, and the information of receiving system is represented in a plurality of combination.
Yet in the DDC of the device information that is used for obtaining receiving system communication, transmission speed is low.So, in needs read a plurality of system configuration, under the little situation of the reception buffer capacity that is used for the DDC information that storage system protects, can not obtain information effectively, this has increased the processing time unfriendly.
Further, read EDID information, analyze then from the DDC buffer.So, use I at needs
2In the system configuration of the ram region transmission EDID information of C bus 211 in system, can in the processing time, increase and pass through I
2C bus 211 is transmitted the needed time.
Therefore for these reasons, in the system configuration of mentioning before, prolong the needed time of processing EDID information, when the image of output system and voice/sound, produced time delay unfriendly.
The example of the routine techniques that addresses this problem is narrated in the open No.2005-130520 of Japanese unexamined patent publication No., wherein in order to overcome this shortcoming, keeps a plurality of buffers in system, so that control EDID information.Yet the EDID information dispersion is stored in a plurality of, so owing to handle overload when reading all EDID information, so image and voice output still can be delayed, and after this analyzes the device information of receiving system again.Further, in the time in system shown in Figure 2, can not guaranteeing that DDC buffer 204 has enough capacity, need read a plurality of EDID information in some different times.Therefore, need will obtain the zones of different of EDID message transmission in the DDC buffer 204, so that further obtain EDID information to system.As a result, cost even more time are obtained EDID information.
Summary of the invention
So main purpose of the present invention is to reduce the deriving means required time of information.
To achieve these goals, prepared two buffers in the present invention, the device information (EDID) that transmits from receiving system is stored in wherein.Then, parallel processing from the receiving system to the dispensing device transfer of data and from the dispensing device to the controller transfer of data of (component computer).Therefore, can reduce the required time of deriving means information.
In order to pass through the DDC bus, send the subordinate address and the offset address that are used to store the desired device information that obtains, and will distribute from the device information that receiving system sends and be stored in a plurality of memory elements (buffer) from receiving system reading device information.Further, provide and to use hardware that device information is written to control register in the memory element, bit is set in control register by controller.Therefore, will distribute by the device information that this bit setting is obtained and store in a plurality of memory elements.
In order under aforementioned arrangements, to carry out parallel processing, processing sequence is controlled, be stored in box lunch that data at least one memory elements of a plurality of memory elements are read and when being transferred to controller, the device information that obtains from receiving system can be written at least one memory element of all the other memory elements, and when the data of that memory element at least that is stored in described all the other memory elements as mentioned above are read and are transferred to controller, can the device information that obtain from receiving system be written to that memory element at least of a plurality of memory elements as mentioned above.When such control and treatment order, but transfer of data from the receiving system to the dispensing device and the transfer of data parallel processing from the dispensing device to the controller.
When in the process of deriving means information, since dispensing device by the DDC communications access do not store the zone of data and when in DC communication, causing mistake, check wrong factor, so as misjudgment cause by DDC communication or cause by (address error) carried out visiting in the zone of not storing data.Then, in system, select suitable processing based on judging so that if the mistake that causes by DDC communication then mistake is handled, if address error then continues normal process.
In order in DDC communication, to avoid owing to do not store the mistake that the zone of data conducts interviews and caused in to receiving system, in the present invention, obtain such device information from receiving system in advance, promptly by this device information can confirm not store data the zone existence whether and the position.Then, controller is based on the device information that makes non-data area obtain confirming that is obtained, and the control device information acquisition unit is not visited the zone of not storing data so that obtain device information.
In the present invention of configuration like this, deriving means information also can be analyzed caused mistake in the DDC communication process between sending and receiving device simultaneously rapidly and accurately.
When using HDMI from the controller transmitting device information of receiving system to the dispensing device that is provided at system, be used for effectively processing speed is improved according to data transmission device of the present invention and data transfer control method, wherein, the dispensing device of this system is used for sending video and voice data to receiving system, and its example is DVD player and DVD register.
Description of drawings
By the following description of the preferred embodiment of the present invention, it is clear that these and other objects of the present invention will become, and be limited in the appending claims.A plurality of advantages of narration will not cause those skilled in the art's attention when enforcement is of the present invention in present specification.
Fig. 1 illustrates the system configuration that is used to transmit data according to the preferred embodiment of the present invention.
Fig. 2 illustrates the conventional system structure that is used to transmit data.
Fig. 3 illustrates the order according to Data Transmission Controlling of the present invention.
Fig. 4 is the foundation normal process flow chart that carries out Data Transmission Controlling in controller of the present invention.
Fig. 5 is the schematic diagram of three kinds of tactic patterns of EDID.
Fig. 6 is the process chart based on mistake in the system that only comprises basic block.
Fig. 7 is the flow chart by adopting parallel processing and avoiding the time that any visit that does not have the EDID zone is reduced.
Fig. 8 is according to the minimum component diagram as device of the present invention.
Fig. 9 is increased to being used among the present invention to obtain the component diagram of video to be sent and voice data.
Embodiment
Below with reference to accompanying drawing the preferred embodiment according to data transmission device of the present invention and data transfer control method is described in detail.Fig. 1 illustrates the receiving system 106 of the video/audio dispensing device 101 of DVD player for example or DVD register and for example Digital Television or AV amplifier by first interface 110 (HDMI) state connected to one another.
Video/audio dispensing device 101 comprises controller (microcomputer etc.) 103 that is used for control system and the transmitter 102 that is used to control video to be sent and voice data.Transmitter 102 comprises video/audio transmitter 105, device information acquiring unit 112 and control register 113.
Video/audio transmitter 105 serves as the role of TDMS transmitter, and its use is called the sending method of TMDS (minimum transition difference signaling), stops and beginning the transmission of video and voice data.Device information acquiring unit 112 serves as the role of DDC i/o controller, be used for by DDC (DDC) bus as first interface, 110 parts, obtain device information (comprising the information relevant), for example EDID with receiving function to end device.113 pairs of device information acquiring units 112 of control register are controlled.
Device information acquiring unit 112 comprises first memory element 114 and second memory element 115.These memory elements 114 and 115 are buffers of the data obtained from the DDC bus of storage.Memory element 114 and 115 minimal amount are 2, yet the memory element more than two can be provided.Further, memory element 114 and 115 unnecessary being provided in the transmitter can be stored the arbitrary region that data and system can visit but can be provided in device information acquiring unit 112. Memory element 114 and 115 size there is no need to limit, and but, if they have the size of least unit 128 bytes of EDID structure, then are easy to data are handled.
Use segment pointer visit EDID.When the value (0-127) of the section (data cell of being cut apart by 256 bytes of EDID) that reads when expectation writes on the 60h place of DDC address, the A0h of DDC address and A1h and this section quite, this permission is read data.The mechanism of this read operation is by enhancement mode DDC standard (the ENHANCED DISPLAY DATA CHANNELSTANDARD) management based on VESA (Video Electronics Standard Association, VESA).Controller 103 is provided with following information in control register 113.Controller 103 in control register 113, be provided with the expectation read the section value (for example, 0x00 under first section situation), the size of data to be read (for example, 0x7F under the 128 byte situations), be used for which information of identification access A0h and A1h, and which storage that is used for being identified at first memory element 114 and second memory element 115 by DDC communicate by letter the data obtained information (for example, storage at A0h is 0x00 under the situation of first memory element 114, storage at A0h is 0x80 under the situation of second memory element 115, storage at A1h is 0x08 under the situation of first memory element 114, and is 0x88 in the storage of A1h under the situation of second memory element 115).
After configuration information as mentioned above, the order of set content is carried out in controller 103 issues.Hereinafter, the processing of obtaining the device information (EDID) of receiving system 106 by configuration information and issue an order in control register 113 is called the issue of EDID reading order.Can carry out similar processing in to the formation of the address of the device information of end device not using the direct designated store of segment pointer.
When finishing aforementioned the setting in control register 113, device information acquiring unit 112 sends the clock signal that is used for reading device information by the device information transmitter 108 of DDC bus to receiving system 106 inside.This signal meets I
2The C standard, and comprise the subordinate address (slave address) and the offset address of the device information (EDID) that reads of expectation.The request of induction signal, device information transmitter 108 sends to device information acquiring unit 112 with the device information in the device information memory cell 107 (EDID).Device information acquiring unit 112 is stored in the EDID that sends in first memory element 114 or second memory element 115 according to the setting in the control register 113.Controller 103 passes through I
2C bus 111 reads the EDID that is stored in first memory element 114 or second memory element 115.Repeat above-described a series of processing, so that the device information of receiving system 106 is sent to the controller 103 of video/audio dispensing device 101.
Describe treatment step below with reference to accompanying drawing, wherein be used alternatingly two memory elements 114 and 115, to reduce the time of reading EDID and sending the EDID that is read to controller 103 from receiving system 106.In Fig. 3, use the arrow have numeral that treatment step when reading EDID is shown.Fig. 4 is the treatment step flow chart of the transfer of data in the controller.Processing numbering 1-12 shown in Fig. 4 is corresponding with the processing numbering shown in Fig. 3.
When the EDID reading order was dealt into control register 113, device information acquiring unit 112 sent the signal (handling numbering 2) that is used to read EDID data 1 (3071) by the DDC bus immediately to receiving system 106.The receiving system that receives this signal begins to send EDID data 1 (3071) from device information transmitter 108 to video/audio dispensing device 101.Device information acquiring unit 112 stores the EDID data 1 (3071) that send in first memory element 114 into and (handles numbering 3).
After the storage of EDID data 1 (3071) in first memory element 114 finished, controller 103 is to the EDID reading order of control register 113 issues about EDID data 2 (3072), and EDID data 2 (3072) are the device informations (handling numbering 4) that next will read.When issue was used to obtain the EDID reading order of EDID data 2 (3072), the EDID data 1 (3071) that are stored in first memory element 114 were read immediately, and sent to controller 103 (handling numbering 7).Further, when the EDID reading order about EDID data 2 (3072) is dealt into control register 113, parallel with the processing of handling numbering 7, the signal that device information acquiring unit 112 will be used to read EDID data 2 (3072) is sent to receiving system 106 (handling numbering 5).The receiving system 106 that receives this signal begins to send EDID data 2 (3072) by device information transmitter 108 to dispensing device 101.Dispensing device 101 correspondingly stores the EDID data 2 (3072) that sent in second memory element 115 and (handles numbering 6).
After the processing of the processing of processing numbering 7 and processing numbering 5 and 6 is all finished, read EDID data 2 (3072) from second memory element 115 immediately, and send it to controller 103 (handle and number 8).In case handle finishing dealing with of numbering 8, all EDID that are stored in so in first memory element 114 and second memory element 115 have suffered with regard to being read and sending to controller 103.
When control register 113 issue EDID reading orders are finished, device information acquiring unit 112 sends the signal (handling numbering 11) that is used to read EDID data 3 (3073) to receiving system 106.The receiving system 106 that receives this signal sends EDID data 3 (3073) (handling numbering 12) to dispensing device 101.
Then, next need to determine the existence of the device information (EDID data) that reads whether (to handle numbering 9) again, when the device information for the treatment of further to read does not exist, read conduct and be stored in the EDID data 3 (3073) of the device information in first memory element 114, and send it to controller 103 (handling numbering 7).Then, finish the deriving means information processing.
On the other hand, when the device information for the treatment of further to read existed, controller 103 was used for reading EDID reading order (handling numbering 4) as the EDID data 4 (3074) of device information from second memory element 115 to control register 113 issue.At this moment, controller 103 writes second memory element 115 (handling numbering 5 and 6) with EDID data 4 (3074), reads the EDID data 3 (3073) that are stored in first memory element 114 simultaneously.Afterwards, the processing below alternately carrying out, when determining no longer to need reading device information based on the result who handles numbering 9 till.
● issue is used to use first memory element 114 to store the EDID reading order of the device information (EDID data) of any odd number numbering, and
● issue is used to use second memory element 115 to store the EDID reading order of the device information (EDID data) of any even numbers numbering.
So, read EDID from receiving system 106, and be sent to dispensing device 101, and, read EDID from two memory elements 114 and 115, and be sent to controller 103 simultaneously to be used alternatingly the mode of two memory elements 114 and 115.Therefore, can reduce and be used for from the time of receiving system 106 to the controller 103 transmission EDID of dispensing device 101.
Next, with the description of EDID structure, further describe the processing details of handling numbering 9.Fig. 5 is three kinds of patterns of device information (EDID) simplified structure.The structure of device information (EDID) belongs to any one of these three kinds of patterns.Example 1 is for only having the structure that basic block 501 does not comprise extension blocks 503.Example 2 is for having the structure of basic block 502 and extension blocks 503.Example 3 is for having the structure of basic block 504, mapping block 505 and extension blocks 506.Example 3 obtains as the result that example 2 is expanded.
When carrying out the processing of handling numbering 1-8 with order shown in Figure 3 at the device of the EDID that is provided with example 2 structures, be stored in first memory element 114 with EDID data 1 (3071) corresponding basic block 502, be stored in second memory element 115 with EDID data 2 (3072) corresponding extension blocks 503.As a result, the data of the data of basic block 502 and extension blocks 503 have been read in the controller 103.When checking a byte at extension blocks 503 tops in the processing of handling numbering 9, because standard (VESA ENHANCED EXTENDED DISLAYIDENTIFICATION DATA STANDARD) based on device information (EDID), a byte at piece top comprises the label (" T " shown in Figure 5) that shows this block type, therefore can learn that this piece is an extension blocks.When learning that this second is when expanding certainly, can learn that the EDID of this device has the structure of example 2.So (handling numbering 10) finished in not reading in not under control register 113 issues are used to read the situation of EDID reading order of next EDID of device information.
When carrying out the processing of handling numbering 1-8 at the device of the EDID that is provided with example 3 structures, the data of the data of basic block 504 and mapping block 505 have been read in the controller 103.When checking a byte at mapping block 505 tops in the processing of handling numbering 9, can learn that this piece is a mapping block.In mapping block, write the memory location of extension blocks 5 06 based on device information (EDID) standard (VESA ENHANCED EXTENDEDDISLAY IDENTIFICATION DATA STANDARD).So, in the processing of handling numbering 9, learn that this piece is mapping block after, when checking the data of mapping block, can identify the memory location of extension blocks.When the memory location of learning extension blocks and its number, can be according to the treatment step of mentioning before, to be used alternatingly the mode of two memory elements 114 and 115, to the transfer of data between receiving system 106 and the dispensing device 101 and two memory elements 114 and 115 and controller 103 between transfer of data carry out parallel processing (by A circular treatment shown in Figure 4), read and the as many extension blocks of finding of the required extension blocks that reads up to finishing.
When carrying out the processing of handling numbering 1-4 at the device of the EDID that is provided with example 1 structure, in handling numbering 5, indication is waited that the signal that obtains EDID data 2 sends to receiving system 106, yet in this case, receiving system 106 does not have and EDID data 2 (3072) corresponding EDID.So, will return a wrong (see figure 6) as processing numbering 6 from the response of receiving system 106.
When in order to read extension blocks, when the EDID reading order is dealt into the receiving system (processing numbering 4 shown in Figure 6) that is provided with the EDID with extension blocks, DDC communication will be carried out at non-existent offset address.Standard code, in DDC communication communication with I
2Mode is carried out like the C communication class, and when communication fair termination, the affirmation that communication stops is returned from the opposing party who communicates.So, when non-existent any offset address zone is conducted interviews, do not return affirmation, and this DDC communication lead to errors (processing numbering 6 shown in Figure 6).At this moment, dispensing device 101 basic block 501 that will be stored in first memory element 114 simultaneously reads (processing numbering 7 shown in Figure 6) in the controller 103.This moment, dispensing device 101 (controller 103) can not be judged the mistake of returning from receiving system 106 accidents and be caused by DDC communication, still by caused to the visit that does not have EDID.
Then, when finishing the reading of basic block 501, controller 103 is checked 1 byte data (" F " shown in Fig. 5) of the 127th byte in the basic blocks 501.This 1 byte data is called extension flag, has wherein write the information that whether exists about extension blocks and mapping block.According to EDID standard (VESAENHANCED EXTENDED DISLAY IDENTIFICATION DATA STANDARD), under the situation of extension blocks and mapping block existence, in extension flag, write 0x01, and under extension blocks and the non-existent situation of mapping block, wherein write 0x00.So, when the value of extension flag is 0x01,, returned the response that shows the DDC mistake although expression extension blocks and mapping block exist.Controller 103 detects the response of returning, and judges current state and reflected graunch (processing numbering 9 shown in Figure 6) in DDC communication.In this case, controller 103 is transferred to the processing based on mistake of system, and attempts communication again (processing numbering 13 shown in Figure 6).
When the value of extension flag was 0x00, expression extension blocks and mapping block did not exist, and the mistake in the DDC communication is owing to the non-existent EDID of visit zone causes.Controller 103 detects this fact, and is the judgement that only has the example 1 of basic block, not error process based on the EDID structure to receiving system.Then, controller 103 obtains EDID in processing numbering 1-7 shown in Figure 6, stop to obtain EDID afterwards.
Describe below and how to avoid because there are not the DDC mistake (referring to Fig. 7) that is caused in extension blocks and mapping block.At first, controller 103 reads 1 byte data (shown in Figure 7 processing numbering 15) of extension flag, and the existence of definite extension blocks and mapping block whether (processing numbering 16 shown in Figure 7).When judging extension blocks and mapping block and exist, controller 103 continues issue EDID reading orders (processing numbering 1-4 shown in Figure 7), thereby reads basic block and extension blocks successively.When judging that extension blocks does not exist, controller 103 changes the method for issue an order, so that only read basic block (processing numbering 1 ', 2 ', 3 ' and 7 shown in Figure 7), thereby has avoided the visit to non-existent extension blocks and mapping block.
Provide the distinct methods of two kinds of issue an orders described above, to avoid in DDC communication owing to the mistake that causes not existing EDID to conduct interviews.Further, under the situation of extension blocks and mapping block existence, can carry out parallel processing in the mode of continuous issue EDID reading order as handling shown in the numbering 5,6 and 7.As a result, deriving means information (EDID) effectively.
When carrying out when handling with described order according to three EDID tactic patterns, but the transfer of data between parallel processing receiving system 106 and the dispensing device 101 and two memory elements 114 and 115 and controller 103 between transfer of data.As a result, reduced and be used for to the 103 required times of dispensing device information (EDID) of controller.Therefore, diminishbb time quantum depends on the structure of the device information (EDID) of opposite end institute jockey.Yet, because data can be between receiving system 106 and dispensing device 101, and two memory elements 114 and 115 and controller 103 between transfer of data transmit concurrently, so time quantum can reduce [time that is used for transmission 128 byte datas between receiving system 106 and dispensing device 101] * [piece number to be read].
Be set under the situation of 256 bytes will at first reading the size of extension flag, can reduce the frequent issue of EDID reading order as an a kind of method and a memory element.The result has improved processing speed.When extension flag is 0x01, extension blocks certainly exists.So if the size of memory element 114 and 115 is 256 bytes, size of data then to be read is set to 256 bytes, and the issue of EDID reading order once.The result can obtain basic block, extension blocks and mapping block easily.Further, even, also can once obtain the data that reach 256 bytes, therefore owing to exist under the situation of a plurality of extension blocks, when being 128 bytes, during 1/2 transmission command of transmission command quantity, can obtain data with identical size with memory element 114 and 115 sizes.In the extension flag that detects is under the situation of 0x00, as a kind of possible selection, size of data to be read can be changed into 128 bytes, to avoid any unnecessary visit for the data area that does not have extension blocks and mapping block, then, issue EDID reading order is so that only obtain basic block.
Under the area condition of limited (for example, if the buffer of one 128 byte can only be provided) of preparable memory element, the data of once obtaining can reduce half.Therefore, when handling and have two processing under the situation that is respectively 128 byte-sized memory elements when similar, the transfer of data between receiving system 106 and two memory elements 114 and 115 can and two memory elements 114 and 115 and controller 103 between the transfer of data parallel processing.If the data that possible accuracy ground administrative institute obtains under the afore-mentioned, the size that then once can obtain data can be set to 1 byte, so that data are transmitted by 1 byte parallel.
Always do not need in transmitter 102 generator information acquisition unit 12, first and second memory elements 114 and 115 and control register 113.As shown in Figure 8, controller 803, device information acquiring unit 812, control register 813 and first and second memory elements 814 and 815 can be formed control device (device information deriving means 830).
Further, as shown in Figure 9, the video/audio dispensing device (see figure 1) video/audio encoder 920 that can further comprise the CD/DVD reconstructor 921 that is used for from the medium reading of data such as CD or DVD, be used for from the tuner 922 of outside receiver, video and voice data and be used for video and voice data are encoded.Therefore, the device information that controller 903 can obtain based on device information acquiring unit (see figure 9) to end device, form with the signal of the performance that is suitable for opposite end institute jockey sends the data of CD and DVD and the data of obtaining in terrestrial digital broadcasting.
As description so far, according to preferred embodiment, after being video/audio dispensing device power supply such as DVD player or DVD register, the device information of opposite end institute jockey can read more quickly, and video and voice data can be exported more quickly.As a result, effectively shortened and be used for to opposite end institute jockey output video and required time of voice data.
Although described present the preferred embodiments of the present invention of considering, should be appreciated that and to carry out various modifications therein, and claims are intended to cover all and drop on this modification within connotation of the present invention and the scope.
Claims (17)
1. video/audio dispensing device comprises:
Transmitter;
Be used to control the controller of described transmitter; And
A plurality of memory elements, wherein,
Described transmitter comprises:
The video/audio transmitter is used for sending video/audio signal to reception device external; And
The device information acquiring unit is used for receiving the device information that comprises the information relevant with the receiving function of described receiving system from described receiving system, and sends the device information that receives to described controller; And
Described a plurality of memory element is temporarily stored described device information therein;
Described controller is carried out the parallel processing that writes described device information and read described device information at least one of described a plurality of memory elements from least one of all the other memory elements, and controls described transmitter based on the described device information that reads successively from described a plurality of memory elements in described parallel processing.
2. video/audio dispensing device as claimed in claim 1, wherein,
Be used to make described receiving system and described video/audio transmitter interface connected to one another and be used to make described device information acquiring unit and described controller interface connected to one another different.
3. video/audio dispensing device as claimed in claim 1 further comprises control register, is used to be stored in the control bit that uses when described controller is controlled described device information acquiring unit, wherein,
The described control bit of the described control register of described controller function, thus device information to be received selected.
4. video/audio dispensing device as claimed in claim 2, wherein,
Described controller function control bit, thus the memory element of described device information to be written selected.
5. video/audio dispensing device as claimed in claim 1, wherein,
Described controller is to be used alternatingly the mode of described a plurality of memory elements, in at least one of described a plurality of memory elements, write described device information and from least one of all the other memory elements, read described device information, and based on controlling described transmitter by the described control and treatment that replaces from the described device information that described a plurality of memory elements read successively.
6. video/audio dispensing device as claimed in claim 5, wherein,
When receiving described device information, occur under the wrong situation, check wrong content the described device information that described controller was obtained before mistake occurring, and based on the result of described inspection, judgement is to continue normal process or select processing based on mistake.
7. video/audio dispensing device as claimed in claim 5, wherein,
Described controller reads the data division that can determine the expected data memory range from the described device information that is received, determine desired storage scope based on the data division that is read, from described memory element, optionally read determined expected data memory range, and read the result to described controller transmission.
8. device information deriving means comprises:
Controller is used to control outside transmitter; And
The device information acquiring unit is used for receiving the device information that comprises the information relevant with the receiving function of described receiving system from reception device external, and sends the information that receives to described controller, wherein,
Described device information acquiring unit comprises a plurality of memory elements, is used for temporarily storing described device information; And
Described controller is carried out the parallel processing that writes described device information and read described device information at least one of described a plurality of memory elements from least one of all the other memory elements, and controls described transmitter based on the described device information that reads successively from described a plurality of memory elements in described parallel processing.
9. device information deriving means as claimed in claim 8 further comprises control register, employed control bit when being used to be stored in described controller described device information acquiring unit being controlled, wherein,
The described control bit of the described control register of described controller function, thus device information to be received selected.
10. device information deriving means as claimed in claim 8, wherein,
Described controller is to be used alternatingly the mode of described a plurality of memory elements, in at least one of described a plurality of memory elements, write described device information and from least one of all the other memory elements, read described device information, and based on controlling described transmitter by the described control and treatment that replaces from the described device information that described a plurality of memory elements read successively.
11. device information deriving means as claimed in claim 10, wherein,
When receiving described device information, occur under the wrong situation, check wrong content the described device information that described controller was obtained before mistake occurring, and based on the result of described inspection, judgement is to continue normal process or select processing based on mistake.
12. device information deriving means as claimed in claim 10, wherein,
Described controller reads the data division that can determine the expected data memory range from the described device information that is received, determine desired storage scope based on the data division that is read, from described memory element, optionally read determined expected data memory range, and read the result to described controller transmission.
13. a video/audio dispensing device comprises:
The described device information deriving means of claim 8;
The recording medium reproducing device is used for reading video and voice data from recording medium;
Tuner is used to receive described video and voice data; And
Video/audio encoder is used for encoding to the data that read by described recording medium reproducing device and by described video and voice data that described tuner receives, wherein,
Video that reads from described recording medium and voice data are sent to reception device external based on the device information that reads from described device information deriving means.
14. video/audio dispensing device as claimed in claim 1, wherein,
Described a plurality of memory element obtains in the mode that a memory element is virtually divided into a plurality of memory elements.
15. video/audio dispensing device as claimed in claim 14, wherein, in a plurality of memory elements of described virtual division, division proportion can change.
16. device information deriving means as claimed in claim 8, wherein,
Described a plurality of memory element obtains in the mode that a memory element is virtually divided into a plurality of memory elements.
17. device information deriving means as claimed in claim 16, wherein,
In a plurality of memory elements of described virtual division, division proportion can change.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006323403 | 2006-11-30 | ||
| JP2006323403 | 2006-11-30 | ||
| JP2006-323403 | 2006-11-30 | ||
| JP2007-278442 | 2007-10-26 | ||
| JP2007278442 | 2007-10-26 | ||
| JP2007278442A JP2008160804A (en) | 2006-11-30 | 2007-10-26 | Data transfer device and transfer control method |
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| CN101197985A CN101197985A (en) | 2008-06-11 |
| CN101197985B true CN101197985B (en) | 2011-06-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPWO2010007751A1 (en) * | 2008-07-14 | 2012-01-05 | パナソニック株式会社 | Video data processing apparatus and video data processing method |
| GB2492540B (en) | 2011-06-30 | 2015-10-14 | Samsung Electronics Co Ltd | Receiving a broadcast stream |
| CN103200382B (en) * | 2012-01-09 | 2017-10-31 | 上海华虹集成电路有限责任公司 | The transmitting terminal of HDMI and the interactive communication method of receiving terminal |
| JP2015115670A (en) * | 2013-12-09 | 2015-06-22 | キヤノン株式会社 | Transmitter, method, and program |
| CN104102469B (en) * | 2014-07-30 | 2017-07-18 | 龙迅半导体（合肥）股份有限公司 | The expanded scope mark data EDID of Multiple DisPlay combined method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001065832A1 (en) * | 2000-02-29 | 2001-09-07 | Watchpoint Media, Inc. | A method and apparatus for receiving a hyperlinked television broadcast |
| EP1439693A1 (en) * | 2001-10-23 | 2004-07-21 | Matsushita Electric Industrial Co., Ltd. | Television receiver and method for counting the number of accesses from the receiver |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001065832A1 (en) * | 2000-02-29 | 2001-09-07 | Watchpoint Media, Inc. | A method and apparatus for receiving a hyperlinked television broadcast |
| EP1439693A1 (en) * | 2001-10-23 | 2004-07-21 | Matsushita Electric Industrial Co., Ltd. | Television receiver and method for counting the number of accesses from the receiver |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2001-231020A 2001.08.24 |
| JP特开2001-251564A 2001.09.14 |
| JP特开2001-285743A 2001.10.12 |
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| JP2008160804A (en) | 2008-07-10 |
| CN101197985A (en) | 2008-06-11 |
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