JP2009188921A - Video-recording and playback system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video-recording and playback system capable of performing temporary video-recording and retroactive playback, through simple remote controller operations. <P>SOLUTION: A video-recorder 10 and a TV 30 are connected via an HDMI cable 50 and on the basis of an instruction signal inputted from a remote controller 41 via a photodetection section 39, a microcomputer 40 of the TV 30 uses a CEC command to cause the video-recorder 10 to perform temporary video-recording or retroactive playback. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a recording / reproducing system for recording / reproducing a broadcast program.

  2. Description of the Related Art Conventionally, in a recording apparatus using a random-accessible recording medium such as a hard disk, a program currently being broadcast is temporarily recorded for a predetermined time, and the recorded program is played back so that the program can be viewed (played back). Can be traced back by an arbitrary time set within a predetermined time, and the actual broadcast time point has a so-called retroactive playback function that plays back with a time difference by this arbitrary time (see, for example, Patent Document 1). Note that “backward playback” is a name used for convenience, and may be called another name such as “time difference playback”. With this function, the user can view a scene that has been missed by necessity while viewing the program by retroactively reproducing it.

  FIG. 3 is a schematic diagram showing a recording / playback system in which a television receiver is connected to a recording device having the above-described retroactive playback function. In the recording / playback system shown in FIG. 3, the following operation is necessary to temporarily record the program being viewed by the user. Note that the recording apparatus 200 in FIG. 3 has a program receiving function similar to that of the television receiving apparatus (hereinafter abbreviated as TV) 100.

  First, the user operates the remote controller 101 for operating the TV 100 to turn on the TV 100 and also operates the remote controller 201 for operating the recording apparatus 200 to turn on the recording apparatus 200.

  Next, the user operates the remote controller 101 to switch the input so that the TV 100 becomes a monitor of the recording device 200.

  Next, the user operates the remote controller 201 to match the broadcast wave channel received by the recording apparatus 200 with the channel of the program that the user wants to watch and starts temporary recording. Accordingly, the user can cause the recording device 200 to temporarily record the broadcast program while viewing the broadcast program received by the recording device 200 on the TV 100.

Then, when the program being viewed is played back, the user operates the remote controller 201 to start the backward playback. When the user wants to end the program, the user operates the remote controller 201 to stop the backward playback.
JP 2004-48718 A

  As described above, in order to perform temporary recording and retroactive playback in the conventional recording / playback system, complicated operations using the remote control 101 of the TV 100 and the remote control 201 of the recording apparatus 200 are required.

  Incidentally, some TVs with a built-in hard disk have a function of automatically recording a currently viewed program and enabling retroactive playback. In such a TV, it is possible to execute temporary recording and retroactive playback only by a TV remote control operation.

  However, a user who already owns a TV and does not need to replace it, or who feels anxiety that a TV with a built-in hard disk is likely to break down, connects a recording device to the TV in order to realize temporary recording and retroactive playback. However, it is necessary to perform the above-described complicated operation.

  The present invention has been made in view of the above, and a recording / playback system capable of performing temporary recording and retroactive playback by a simple remote control operation using a single remote control even if the TV and the recording device are different devices. The purpose is to provide.

  In order to achieve the above object, a recording / reproducing system of the present invention is a recording / reproducing system including a television receiving device and a recording device connected to the television receiving device. Instruction signal input means for receiving an instruction signal for operating the recording / playback system; first receiving means for receiving a broadcast program and extracting a video signal included in the program as a first video signal; , Second receiving means for receiving a second video signal transmitted from the recording device, output means for outputting one of the first video signal and the second video signal, and the instruction When the signal input means accepts the instruction signal for turning on the power, the apparatus operates as a television receiver from a standby state where only the instruction signal is accepted. And the recording device receives the same program as the program being received by the first receiving means, and extracts the video signal included in the program as the second video signal. Then, a temporary recording request signal for temporarily recording the extracted second video signal is generated, the generated temporary recording request signal is transmitted to the recording device, and an output of the output means is output to the first And when the instruction signal input means accepts the instruction signal for executing fast reverse playback, the second video signal temporarily recorded in the recording device is A fast reverse playback request signal for causing the apparatus to transmit the second video signal obtained by the fast reverse playback is generated, and the generated fast reverse playback request signal is A fast-reverse playback requesting means for transmitting the output to the image apparatus and using the output of the output means as the second video signal received by the second receiving means, and the instruction signal input means for executing normal playback. When the instruction signal is received, the second video signal temporarily recorded by the recording device is normally reproduced, and the second video signal obtained by the normal reproduction is normally transmitted to the device. And a normal playback requesting unit that transmits a playback request signal to the recording device and uses the output of the output unit as the second video signal received by the second receiving unit. The apparatus receives a broadcast program, extracts a video signal included in the program as the second video signal, and executes recording and reproduction of the second video signal. hand A recording / reproducing unit capable of reproducing the already recorded second video signal while executing recording of the second video signal, and the second reproduced by the recording / reproducing unit. And when the temporary recording request signal is received from the television receiver, the third receiver is used to transmit the video signal of the television receiver to the television receiver. The same program as the program being received by the first receiving means is received, a video signal included in the program is extracted, and the extracted video signal is used as the second video signal, and the recording / reproducing means is used. A temporary recording control means for temporarily recording, and when the fast reverse playback request signal is received from the television receiver during the temporary recording, the temporary recording currently being executed using the recording / playback means. The second video signal that has already been temporarily recorded is played back in a fast-rewinding manner, and the second video signal obtained by the fast-back playback is sent to the television receiver using the transmission means. When the normal playback request signal is received from the television receiver during the fast reverse playback and the fast reverse playback control means to transmit, the fast playback currently being executed is stopped using the recording / playback means In addition, the second video signal recorded after the time point when the fast reverse playback is stopped is normally played back, and the second video signal obtained by the normal playback is sent to the television using the transmission means. It is a device comprising normal reproduction control means for transmitting to a receiving device.

  The television receiver according to the recording / reproducing system of the present invention may further include the instruction signal input means after receiving the instruction signal for executing the fast reverse reproduction or the instruction signal for executing the normal reproduction. When the instruction signal for executing the recording is received, the recording device records the second video signal that is being played back in a fast-rewinding or normal manner from the time when the instruction signal for executing the recording is received. A retroactive recording request signal for saving is generated, and the retroactive video recording request signal is transmitted to the recording device. When receiving from the television receiver, the second playback which is currently fast-rewinding playback or normal playback is performed using the recording / playback means. A video signal, characterized in that it is a device comprising a recording controller goes back to save a recording from after the time of accepting the dates recording request signal.

  According to the recording / playback system of the present invention, even if the TV and the recording device are different devices, temporary recording and retroactive playback can be performed by a simple remote control operation using a single remote control.

  Further, when a program being broadcast is temporarily recorded, it is possible to switch from the temporary recording to the normal recording after the desired position of the temporarily recorded program and save it.

  The best mode for carrying out the recording / playback system of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a recording / playback system according to an embodiment of the present invention. As shown in FIG. 1, the recording / playback system according to the present embodiment includes a recording device 10 and a TV 30. The recording device 10 and the TV 30 comply with the HDMI (High Definition Multimedia Interface) standard and are connected via an HDMI cable 50.

  As shown in FIG. 1, the recording apparatus 10 includes a tuner 11, an A / D converter 12, an encoder 13, a buffer 14, a data controller 15, a recording medium 16, a decoder 17, and an HDMI transmitter. 18, a connector unit 19, a light receiving unit 20, and a microcomputer (hereinafter abbreviated as a microcomputer) 21.

  The tuner 11 receives a broadcast signal of a channel including a desired program from a broadcast wave via an antenna (not shown), and outputs a video signal and an audio signal extracted from the broadcast signal.

  When the tuner 11 is for analog broadcasting, the A / D converter 12 converts the video signal and audio signal output from the tuner 11 into a digital signal. If the tuner 11 is for digital broadcasting, the A / D converter 12 is not necessary.

  The encoder 13 compresses the digital video signal and audio signal output from the A / D converter 12 or the tuner 11 for digital broadcasting and converts them into a digital stream.

  The buffer 14 temporarily stores the digital stream output from the encoder 13 and then outputs the digital stream to the data control unit 15.

  The data control unit 15 performs a process of recording the digital stream output from the buffer 14 on the recording medium 16. Further, at the time of reproduction, the data control unit 15 reads a digital stream corresponding to a desired program from the recording medium 16 and outputs this to the decoder 17.

  The recording medium 16 is composed of a hard disk or the like, and records a digital stream supplied from the data control unit 15.

  The decoder 17 decompresses the digital stream supplied from the data control unit 15 and outputs an uncompressed digital video signal and digital audio signal to the HDMI transmission unit 18.

  The HDMI transmission unit 18 converts the digital video signal and digital audio signal output from the decoder 17 into an HDMI standard signal and outputs the signal. The HDMI transmission unit 18 is connected to the HDMI reception unit 32 of the TV 30 via the video / audio line 51 of the HDMI cable 50.

  The connector unit 19 is for physically joining the recording device 10 and the HDMI cable 50.

  The light receiving unit 20 receives, for example, infrared light output from the remote controller 22 for operating the recording device 10, and appropriately converts a transmission signal by the infrared light into an operation signal and outputs the operation signal to the microcomputer 21.

  The microcomputer 21 comprehensively controls each unit provided in the recording device 10. The microcomputer 21 is connected to the microcomputer 40 of the TV 30 via a CEC (Consumer Electronics Control) line 52 of the HDMI cable 50, and transmits and receives commands to and from the microcomputer 40 in accordance with CEC, which is an HDMI option standard.

  The TV 30 includes a tuner 31, an HDMI receiving unit 32, a switching unit 33, a video processing unit 34, an audio processing unit 35, a video display unit 36, a speaker 37, a connector unit 38, a light receiving unit 39, And a microcomputer 40.

  The tuner 31 receives a broadcast signal of a channel including a desired program from a broadcast wave via an antenna (not shown), and outputs a video signal and an audio signal obtained from the broadcast signal.

  The HDMI receiving unit 32 is connected to the HDMI transmitting unit 18 of the recording apparatus 10 via the video / audio line 51 of the HDMI cable 50, receives the HDMI standard video signal and audio signal transmitted from the HDMI transmitting unit 18, A digital video signal and a digital audio signal before conversion into an HDMI standard signal are generated from the received HDMI standard video signal and audio signal.

  The switching unit 33 switches between an input from the tuner 31 and an input from the HDMI receiving unit 32 and outputs a digital video signal and a digital audio signal from either the tuner 31 or the HDMI receiving unit 32. The tuner 31 is assumed to be for digital broadcasting. In the case of analog broadcasting, an A / D conversion unit is required.

  The video processing unit 34 performs necessary processing on the digital video signal output from the switching unit 33, converts the digital video signal into an analog signal, and outputs the analog signal to the video display unit 36. The audio processing unit 35 performs necessary processing on the digital audio signal output from the switching unit 33, converts it into an analog signal, and outputs the analog signal to the speaker 37.

  The video display unit 36 includes a liquid crystal display, a plasma display, and the like, and converts the video signal supplied from the video processing unit 34 into a video and displays it. The speaker 37 converts the sound signal supplied from the sound processing unit 35 into sound and outputs the sound. The connector unit 38 is for physically joining the TV 30 and the HDMI cable 50.

  The light receiving unit 39 receives, for example, infrared rays output from the remote controller 41 for operating the TV 30, and appropriately converts a transmission signal by the infrared rays into an operation signal and outputs the operation signal to the microcomputer 40.

  The microcomputer 40 comprehensively controls each unit provided in the TV 30. In addition, the microcomputer 40 is connected to the microcomputer 21 of the recording apparatus 10 via the CEC line 52 of the HDMI cable 50, and transmits and receives CEC commands to and from the microcomputer 21.

  The HDMI cable 50 is divided into a video / audio line 51 and a CEC line 52. The video / audio line 51 connects the HDMI transmission unit 18 of the recording apparatus 10 and the HDMI reception unit 32 of the TV 30 to transmit a video signal and an audio signal. The CEC line 52 connects the microcomputer 21 of the recording device 10 and the microcomputer 40 of the TV 30 to transmit a CEC command.

  CEC commands include general-purpose commands for controlling power on / off, input switching, playback start, playback stop, fast forward playback, fast reverse playback, etc., and optional vendor unique commands that can be uniquely defined by the vendor. In the present embodiment, as a vendor unique command, as shown in FIG. 2, a command for requesting the start of temporary recording, a command for requesting stop of temporary recording, a command for requesting a change in reception channel, and a temporary recording A command for requesting storage of the recorded program, a command for requesting start of retroactive recording, and a command for requesting stop of retroactive recording are defined. The microcomputer 40 of the TV 30 can cause the recording apparatus 10 to perform various operations using these CEC commands.

  Next, the operation of the recording / playback system according to the present embodiment will be described.

  First, the operation when the recording apparatus 10 temporarily records the same program as that being received by the TV 30 will be described.

  When an instruction signal for turning on the power of the TV 30 is input from the remote controller 41 via the light receiving unit 39 by a user operation, the microcomputer 40 turns on the power of the TV 30 and sends a broadcast signal of a desired channel to the tuner 31. Receive. Then, the microcomputer 40 supplies the digital video signal and digital audio signal obtained from the broadcast signal of the channel received by the tuner 31 to the video processing unit 34 and the audio processing unit 35 via the switching unit 33, respectively.

  The video processing unit 34 performs necessary processing on the supplied video signal, converts it to an analog signal, and supplies the video signal to the video display unit 36 to display the video. The sound processing unit 35 performs necessary processing on the supplied sound signal, converts the sound signal into an analog signal, supplies the signal to the speaker 37, and outputs sound.

  When the instruction signal to turn on the power is input, the microcomputer 40 of the TV 30 sends a command for requesting the start of temporary recording, which is a vendor unique command, to the recording device 10 via the CEC line 52 of the HDMI cable 50. It transmits to the microcomputer 21. Here, the command for requesting the start of temporary recording includes information indicating the channel currently being received by the tuner 31 of the TV 30.

  When the microcomputer 21 of the recording apparatus 10 receives a command for requesting the start of temporary recording from the microcomputer 40 of the TV 30, if the power of the recording apparatus 10 is off, the power is turned on and then the tuner 31 of the TV 30 The tuner 11 receives the same channel as the channel being received. Note that the power-off state of the recording apparatus 10 is a so-called standby state in which the main part is turned off, but an operation input from a remote controller or the like is accepted.

  The A / D converter 12 converts the video signal and audio signal output from the tuner 11 into a digital signal and outputs the digital signal to the encoder 13. The encoder 13 compresses the digital video signal and audio signal output from the A / D converter 12, converts them into a digital stream, and outputs the digital stream to the buffer 14. The buffer 14 temporarily stores the digital stream output from the encoder 13 and then outputs the digital stream to the data control unit 15. Then, the data control unit 15 records the digital stream output from the buffer 14 on the recording medium 16.

  Here, when the user operates the remote control 41 of the TV 30 to input an instruction signal for changing to a channel different from the channel being received, the microcomputer 40 of the TV 30 receives the indicated channel in the tuner 31. At the same time, a command for changing the reception channel, which is a vendor unique command, is transmitted to the microcomputer 21 of the recording apparatus 10.

  When the microcomputer 21 of the recording apparatus 10 receives a command requesting the change of the reception channel from the microcomputer 40 of the TV 30, the tuner 31 receives the broadcast signal of the channel designated by this command. As a result, the program included in the changed channel is temporarily recorded.

  According to the above procedure, the recording device 10 is temporarily recording while displaying the program on the TV 30.

  Here, when a scene that the user wants to see again or a scene that has been missed occurs, the user can view the target scene by performing retroactive reproduction of the program being viewed.

  A user operation when performing retroactive playback will be described. First, in order to select a target scene, the user presses a fast reverse playback button (not shown) on the remote controller 41 to put the temporarily recorded program in a fast reverse playback state. When the target scene is reached, the user presses a playback button (not shown) on the remote controller 41 to perform normal playback from that point. Thereby, the user can realize retroactive playback and view the target scene. In the following description, when only “reproduction” is described, “normal reproduction” is indicated.

  The operation of the recording / reproducing system when realizing retroactive reproduction in accordance with such user operation will be described.

  When the user operates the remote control 41 of the TV 30 in a state where the recording device 10 is temporarily recording while displaying the program on the TV 30 according to the above-described procedure, an instruction signal for performing fast reverse playback of the temporarily recorded program is input. Then, the microcomputer 40 of the TV 30 transmits a command for requesting fast reverse playback, which is a general-purpose command, to the microcomputer 21 of the recording device 10. It is assumed that the microcomputer 40 of the TV 30 is provided with operation buttons (none of which are shown) for instructing fast reverse playback, fast forward playback, normal playback, recording, stop, and the like.

  When the microcomputer 21 of the recording apparatus 10 receives a command for requesting fast reverse playback from the microcomputer 40 of the TV 30, the microcomputer 21 performs fast reverse playback of the temporarily recorded program in the direction opposite to the recorded direction. The data control unit 15 is controlled so that the digital stream read from 16 is supplied to the decoder 17.

  The decoder 17 decompresses the digital stream supplied from the data control unit 15 and outputs an uncompressed digital video signal and digital audio signal to the HDMI transmission unit 18. Then, the HDMI transmission unit 18 converts the digital video signal and digital audio signal output from the decoder 17 into an HDMI standard signal, and transmits it to the HDMI reception unit 32 of the TV 30 via the video / audio line 51 of the HDMI cable 50. Send.

  When receiving the HDMI standard video signal and audio signal transmitted from the HDMI transmission unit 18 of the recording device 10, the HDMI receiving unit 32 of the TV 30 converts the received HDMI standard video signal and audio signal into an HDMI standard signal. A digital video signal and a digital audio signal before conversion are generated.

  The microcomputer 40 controls the switching unit 33 so as to switch the input from the tuner 31 to the HDMI receiving unit 32, and the digital video signal and the digital audio signal from the HDMI receiving unit 32 are respectively converted into a video processing unit 34 and an audio processing unit. 35.

  After that, the video processing unit 34 performs necessary processing on the supplied video signal, converts it to an analog signal, and supplies it to the video display unit 36 to display the video. The sound processing unit 35 performs necessary processing on the supplied sound signal, converts the sound signal into an analog signal, supplies the signal to the speaker 37, and outputs sound. In this way, the temporarily recorded program is set in the fast reverse playback state.

  When the user operates the remote control 41 of the TV 30 during fast reverse playback of the temporarily recorded program, an instruction signal for performing normal (forward) playback of the temporarily recorded program being fast reverse played is input. The microcomputer 40 of the TV 30 transmits a command for requesting reproduction, which is a general-purpose command, to the microcomputer 21 of the recording device 10.

  When the microcomputer 21 of the recording apparatus 10 receives a command requesting playback from the microcomputer 40 of the TV 30, the program temporarily recorded on the recording medium 16 is played back from the playback position when the playback request is input, and is read by this playback. The data control unit 15 is controlled so as to supply the digital stream to the decoder 17.

  The decoder 17 decompresses the digital stream supplied from the data control unit 15 and outputs an uncompressed digital video signal and digital audio signal to the HDMI transmission unit 18. The HDMI transmission unit 18 outputs the digital stream output from the decoder 17. The video signal and the digital audio signal are converted into an HDMI standard signal and transmitted to the HDMI receiving unit 32 of the TV 30. The TV 30 outputs video and audio in the same manner as described above.

  Through the above procedure, retroactive playback (temporal playback) of a temporarily recorded program is realized. Note that the temporary recording of the program continues during retroactive playback.

  Next, the operation when stopping the retroactive reproduction realized as described above will be described.

  When the user operates the remote control 41 of the TV 30 to input an instruction signal for stopping playback during the retroactive playback of the temporarily recorded program, the microcomputer 40 of the TV 30 causes the command to request playback stop, which is a general-purpose command. Is transmitted to the microcomputer 21 of the recording apparatus 10.

  When the microcomputer 21 of the recording apparatus 10 receives a command for requesting the stop of playback from the microcomputer 40 of the TV 30, the microcomputer 21 instructs the data control unit 15 to stop reading the data stream from the recording medium 16 and stop the backward playback. Let

  In addition, when an instruction signal for stopping reproduction is input, the microcomputer 40 of the TV 30 controls the switching unit 33 to switch the input from the HDMI receiving unit 32 to the tuner 31, and the digital video signal and digital audio from the tuner 31 are controlled. The signals are supplied to the video processing unit 34 and the audio processing unit 35, respectively. As a result, the video and audio of the program currently being broadcast are output on the TV 30, and the recording device 10 returns to a state where it is temporarily recorded while displaying the program on the TV 30.

  Next, an operation when the recording / playback system is turned off will be described.

  When the user operates the remote control 41 of the TV 30 to input an instruction signal for turning off the power of the TV 30, the microcomputer 40 of the TV 30 sends a command for requesting stop of temporary recording, which is a vendor unique command, to the recording apparatus 10. To the microcomputer 21.

  When the microcomputer 21 of the recording apparatus 10 receives a command for requesting stop of temporary recording from the microcomputer 40 of the TV 30, the data control is performed so that the temporary recording is ended and the digital stream corresponding to the temporarily recorded program is deleted from the recording medium 16. The unit 15 is controlled to turn off the power of the recording apparatus 10.

  It is also possible to permanently save a program that has been temporarily recorded immediately before the power is turned off. The operation at that time will be described below.

  When the user operates the remote control 41 of the TV 30 to input a signal for instructing the storage of the temporarily recorded program before the power-off operation described above, the microcomputer 40 of the TV 30 temporarily stores the vendor unique command. A command for requesting storage of the recorded program is transmitted to the microcomputer 21 of the recording apparatus 10. When the microcomputer 21 of the recording device 10 receives a command for requesting storage of a temporarily recorded program from the microcomputer 40 of the TV 30, the digital stream corresponding to the temporarily recorded program is not deleted even when the power is turned off. The data control unit 15 is controlled so as to save the data.

  Next, the operation when performing retroactive recording will be described. Here, retroactive recording is a function of switching from a temporary recording to a normal recording after the desired position of the temporarily recorded program when a program currently being broadcast is temporarily recorded.

  A user operation for retroactive recording will be described. First, the user presses the fast reverse playback button on the remote controller 41 to put the temporarily recorded program into a fast reverse playback state. Next, at the start position of the scene to be recorded and saved, a playback pause button (not shown) on the remote controller 41 is pressed to stop fast reverse playback. Then, by pressing a recording button (not shown) on the remote controller 41, the program after the reproduction position at the time of the pause can be recorded and saved.

  The operation of the recording / playback system when realizing retroactive recording according to such user operations will be described.

  First, the TV 30 is turned on to start the temporary recording by the recording device 10 by the same operation as the above-described temporary recording and retroactive playback, and the temporarily recorded program is replayed backward.

  When the user operates the remote control 41 of the TV 30 during fast reverse playback of the temporarily recorded program and a signal instructing the pause of playback of the temporarily recorded program during fast reverse playback is input, the microcomputer 40 of the TV 30 A command for requesting a temporary stop, which is a general-purpose command, is transmitted to the microcomputer 21 of the recording apparatus 10.

  When the microcomputer 21 of the recording device 10 receives a command for requesting a pause from the microcomputer 40 of the TV 30, the data control unit 15 stops reading of the data stream from the recording medium 16 and pauses the fast reverse playback.

  Next, when the user operates the remote control 41 of the TV 30 to input a signal instructing the start of recording, the microcomputer 40 of the TV 30 sends a command requesting the start of retroactive recording, which is a vendor unique command, to the recording apparatus 10. To the microcomputer 21.

  When the microcomputer 21 of the recording device 10 receives a command for requesting the start of retroactive recording from the microcomputer 40 of the TV 30, the digital stream of the temporarily recorded program recorded on the recording medium 16 is reproduced after the playback position at the time of pause. In addition to storing the digital stream, the data control unit 15 is controlled so that the program being received by the recording device 10 is recorded and stored in the recording medium 16 from the time point when it is currently being broadcast.

  In addition, when a signal instructing the start of recording is input, the microcomputer 40 of the TV 30 transmits a command for requesting a fast reverse playback stop, which is a general-purpose command, to the microcomputer 21 of the recording apparatus 10. When the microcomputer 21 of the recording apparatus 10 receives a command for requesting stop of fast reverse playback from the microcomputer 40 of the TV 30, the microcomputer 21 controls the data control unit 15 to stop fast reverse playback.

  In addition, when a signal for instructing the start of recording is input, the microcomputer 40 of the TV 30 controls the switching unit 33 so that the input of the video signal and the audio signal is switched from the HDMI receiving unit 32 to the tuner 31. The digital video signal and the digital audio signal from 31 are supplied to the video processing unit 34 and the audio processing unit 35, respectively. As a result, the TV 30 outputs the video and audio of the currently broadcast program.

  In the above description, when performing backward recording, the example of performing backward recording after stopping fast-reverse playback or normal playback has been shown, but it is possible to go backward during fast-rewind playback or normal playback. Recording may be performed. In this case, the digital stream after the playback position at the time when retroactive recording is executed is stored.

  Next, an operation when stopping retroactive recording will be described.

  When the user operates the remote control 41 of the TV 30 to input a signal to stop recording, the microcomputer 40 of the TV 30 sends a command requesting stop of retroactive recording, which is a vendor unique command, to the microcomputer of the recording apparatus 10. To 21.

  When the microcomputer 21 of the recording device 10 receives a command for requesting the stop of recording from the microcomputer 40 of the TV 30, the microcomputer 21 controls the data control unit 15 to stop recording and saving the program being received and starts temporary recording. As a result, the recording apparatus 10 returns to the state where it is temporarily recorded while displaying the program on the TV 30.

  As described above, according to the present embodiment, the recording device 10 conforming to the HDMI standard and the TV 30 are connected via the HDMI cable 50, and the recording device 10 is controlled from the TV 30 using the CEC command. Without being conscious of the apparatus 10, it is possible to perform temporary recording, retroactive playback, and retroactive recording with a simple operation using one remote controller 41 for the TV 30.

  In contrast to the above embodiment, a configuration in which the remote controller 22 of the recording device 10 is operated and the TV 30 is controlled from the recording device 10 using the CEC command can be realized.

It is a block diagram which shows the structure of the video recording / reproducing system which concerns on embodiment of this invention. It is a table | surface figure which shows the vendor unique command defined in embodiment of this invention. It is the schematic which shows the conventional video recording / reproducing system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Recording apparatus 11 Tuner 12 A / D conversion part 13 Encoder 14 Buffer 15 Data control part 16 Recording medium 17 Decoder 18 HDMI transmission part 19 Connector part 20 Light-receiving part 21 Microcomputer (microcomputer)
30 Television receiver (TV)
31 tuner 32 HDMI receiving unit 33 switching unit 34 video processing unit 35 audio processing unit 36 video display unit 37 speaker 38 connector 39 light receiving unit 40 microcomputer (microcomputer)
50 HDMI cable 51 Video / audio line 52 CEC line

Claims (2)

A recording / reproducing system comprising a television receiving device and a recording device connected to the television receiving device,
The television receiver is
Instruction signal input means for receiving an instruction signal for operating the recording / playback system;
First receiving means for receiving a broadcast program and extracting a video signal included in the program as a first video signal;
Second receiving means for receiving a second video signal transmitted from the recording device;
Output means for outputting either the first video signal or the second video signal;
When the instruction signal input means receives the instruction signal for turning on the power,
The apparatus is switched from a standby state in which only the instruction signal is received to a power-on state in which an operation as a television receiver is performed,
The recording apparatus receives the same program as the program being received by the first receiving means, extracts a video signal included in the program as the second video signal, and extracts the extracted second video signal A temporary recording request signal for temporarily recording, and transmitting the generated temporary recording request signal to the recording device,
Temporary recording request means for using the output of the output means as the first video signal;
When the instruction signal input means receives the instruction signal for performing fast reverse playback,
Generating a fast reverse playback request signal for causing the recording device to transmit the second video signal temporarily recorded and to cause the second video signal obtained by the fast reverse playback to be transmitted by the device; The generated fast reverse playback request signal is transmitted to the recording device,
A fast-reverse playback requesting unit that uses the output of the output unit as the second video signal received by the second receiving unit;
When the instruction signal input means receives the instruction signal for normal reproduction execution,
A normal reproduction request signal for causing the recording apparatus to normally reproduce the second video signal temporarily recorded and transmitting the second video signal obtained by the normal reproduction to the apparatus is provided to the recording apparatus. And send
A normal reproduction requesting unit that uses the output of the output unit as the second video signal received by the second receiving unit;
A device comprising:
The recording device comprises:
Third receiving means for receiving a broadcast program and extracting a video signal included in the program as the second video signal;
Recording / reproducing means for performing recording and reproduction of the second video signal, and capable of reproducing the already recorded second video signal while performing recording of the second video signal When,
Transmitting means for transmitting the second video signal reproduced by the recording / reproducing means to the television receiver;
When the temporary recording request signal is received from the television receiver,
Using the third receiving means, the same program as the program being received by the first receiving means of the television receiving device is received, the video signal included in the program is extracted, and the extracted video A temporary recording control means for temporarily recording a signal as the second video signal using the recording / reproducing means;
When the fast reverse playback request signal is received from the television receiver during the temporary recording,
Using the recording / playback means, the second video signal that has already been temporarily recorded is played back fast while continuing the temporary recording currently being executed, and the second video signal obtained by the fast-back playback is used. , Using the transmission means, fast reverse reproduction control means for transmitting to the television receiver;
When the normal playback request signal is received from the television receiver during the fast reverse playback,
The recording / reproducing means is used to stop the fast-reverse playback that is currently being executed, and the second video signal recorded after the point at which the fast-reverse playback is stopped is normally reproduced, and obtained by this normal reproduction. Normal reproduction control means for transmitting the second video signal to the television receiver using the transmission means;
A device comprising:
A recording / playback system characterized by that. The television receiver further includes
When the instruction signal input means receives the instruction signal for recording execution after receiving the instruction signal for execution of the fast reverse reproduction or the instruction signal for execution of the normal reproduction,
The recording device generates a retroactive recording request signal for recording and storing the second video signal being fast-rewinded or normally reproduced from the time point when the instruction signal for executing the recording is received, An apparatus comprising retro recording request means for transmitting the generated retro recording request signal to the recording apparatus;
The recording device further includes
When a retroactive recording request signal is received from the television receiver, the retroactive video recording request signal is received using the recording / reproducing means for the second video signal that is currently being played backward or normally. It is an apparatus provided with retroactive recording control means for recording and saving from the time point onward,
The recording / reproducing system according to claim 1.

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