JP4122861B2 - Recording / reproducing apparatus and television apparatus using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording / playback apparatus capable of simultaneously playing back a program while recording the program.
[0002]
[Prior art]
There is a simultaneous recording / reproducing apparatus capable of simultaneously reproducing a recorded part of a program while recording a program in television broadcasting. A typical recording medium used in the simultaneous recording / reproducing apparatus is a hard disk drive (HDD). For example, as described in Japanese Patent Application Laid-Open No. 2001-292422, the hard disk drive can read the data written at the same time (simultaneous recording / playback) while writing the data. This function secures a storage area for writing certain data, writes video and audio data to the area, and reads the written data simultaneously with the writing. From this feature, it is possible to realize a so-called chasing playback function that simultaneously plays back a program while recording it. This chasing playback is a function that enables delayed playback of a recorded part that was recorded a little while in time while recording a program in real time.
[0003]
[Problems to be solved by the invention]
By the way, in order to realize the simultaneous recording and reproduction as described above, there is a problem that when a user views a TV program, a troublesome recording operation has to be performed in the following scenes. .
[0004]
The first problem is that if a user forgets to perform a recording operation when watching a program, the user cannot play the program even if the user wants to go back to the past scene of the program. there were. This is because in the prior art, in order to perform simultaneous recording and playback, after the power is turned on, the user must perform a recording operation using a remote control after selecting a program, and forget to perform the basic operation of recording operation. This is a problem caused by
[0005]
As a second problem, a problem when a user views a program in a so-called multi-screen display in which a plurality of programs are simultaneously displayed on a television screen will be described.
[0006]
In general, when viewing a program on the multi-screen display, the user plays the sound of one program out of a plurality of programs displayed on the television screen and does not play the sound of the other programs. Here, when a user records a program to be played and listens to the program and later performs chasing playback or the like, the user frequently switches the sound between a plurality of programs and views various programs. An annoying recording operation is required.
[0007]
As a specific example, the problem is pointed out below when a program is viewed in a so-called parallel two-screen display in which videos of two programs are displayed side by side on a television screen for the sake of simplicity.
[0008]
Now, when two programs received by two tuners are displayed on two parallel screens, for example, the audio of the program placed on the left side is played and the left side is mainly viewed, and the other (placed on the right side) is displayed. When only the video is displayed without outputting the audio of the program, in order to output the left audio, for example, the left program selection button for selecting the left program provided on the remote controller is operated to select the left program. Then, the user performs a recording operation using a remote controller or the like. As a result, it is possible to record the program on the left side from which audio is output. As described above, when a plurality of programs are displayed on the TV screen, it is necessary to select a program to be output as sound by remote control operation from the plurality of programs, and then perform a recording operation to record the program. . However, in such a case, even if the user tries to look back on a plurality of programs that the user has been listening to in the past, the chasing playback or the like is performed unless the recording operation is performed every time the sound is switched. I couldn't. In addition, there is a possibility of forgetting to perform a recording operation when switching voices. In addition, since the recording operation is performed after the sound is switched, there is a time lag from when the sound is switched to when the user executes the recording operation and starts the program recording. Strictly speaking, a program can be recorded immediately after the sound is switched. There was also the problem of not.
[0009]
As described above, when recording one program that displays and listens to a plurality of programs at the same time and outputs sound, in the related art, in order to chase and reproduce a program that has been viewed by outputting sound, the program is switched. There was a problem that it was necessary to perform annoying recording operation every time. Further, specific indications and solutions for these problems are not described at all in the above disclosed examples.
[0010]
The present invention has been made in view of the above-described problems, and the object thereof is to enable chasing playback with good convenience when a user views a program regardless of the user's program viewing method. An object is to provide a simultaneous recording / reproducing apparatus having a simultaneous recording / reproducing function and a television receiver using the same.
[0011]
[Means for Solving the Problems]
In order to achieve the object, the structure described in the claims is adopted. According to the configuration of the present invention, since the program that has been viewed can be recorded without omission, the user can reproduce the past video that has been viewed as needed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of the simultaneous recording / playback apparatus according to the present invention. First, the basic operation of the present embodiment will be described. In FIG. 1, a television signal input via an antenna 100 is input to a first tuner 101 and a second tuner 102. The first tuner 101 and the second tuner 102 select a desired television program to be received, and output video signals and audio signals (hereinafter abbreviated as video / audio signals). Selection of a television program by the first tuner 101 and the second tuner 102 is performed by a user using a general remote controller 115.
[0013]
Here, the remote controller 115 will be briefly described. The remote controller 115 is used by a user to perform general remote operations. The remote controller 115 is turned on / off, channel selection, recording / playback / stop of a simultaneous recording / playback circuit 104 (to be described later), and sound when a multi-screen is displayed. This is the same as a general remote controller used in televisions, VTRs, etc., such as performing basic operations such as program selection for switching. The remote control 115 converts a necessary operation into a command signal, modulates this signal into infrared rays, and the remote control 115 outputs this modulated signal. The modulated signal is input to the remote control receiving unit 114, and the remote control receiving unit 114 reproduces an operation command signal from the modulated signal. The reproduced command signal is input to the microcomputer 113, and the microcomputer 113 controls each block described later.
[0014]
The video / audio signal selected and output by the first tuner 101 is input to the input terminal A of the switching circuit 103 and the input terminal A of the switching circuit 105. The video / audio signal selected and output by the second tuner 102 is input to the input terminal B of the switching circuit 103 and the input terminal B of the switching circuit 106. The switching circuit 103 selects and outputs either the first tuner 101 output video / audio signal or the second tuner 102 output video / audio signal. The selection control of the switching circuit 103 is performed by the microcomputer 113. The video / audio signal output from the switching circuit 103 is input to the simultaneous recording / reproducing circuit 104. In the simultaneous recording / reproducing circuit 104, the input video / audio signal is AD-converted by an AD converter (not shown) and converted into a digital signal. The digital signal is converted into digital compressed data by an MPEG encoding circuit (not shown), and the compressed data is written as a file on the hard disk drive to complete the recording. The recording operation of the simultaneous recording / reproducing circuit 104 is executed in response to a recording command from the microcomputer 113. The simultaneous recording / playback circuit 104 receives a playback control command from the microcomputer 113 in the playback operation, reads a file from the hard disk drive, performs MPEG decoding, and outputs a video signal and an audio signal. The video / audio signal reproduced and output from the simultaneous recording / reproducing circuit 104 is input to the input terminal B of the switching circuit 105 and the input terminal A of the switching circuit 106. The switching circuit 105 selects and outputs one of the video / audio signals input from the input terminal A (first tuner 101 output) and input terminal B (simultaneous recording / playback circuit 104 output). This selection is performed by a switching control signal from the microcomputer 113. The switching circuit 106 selects and outputs one of the video / audio signals from the input of the input terminal B (output of the second tuner 102) and the input of the input terminal A (output of the simultaneous recording / playback circuit 104). This selection is also performed by a switching control signal from the microcomputer 113. At the output from the switching circuit 105, the video signal is input to the video display processing circuit 107, and the audio signal is input to the input terminal A of the switching circuit 109.
[0015]
On the other hand, at the output of the switching circuit 106, the video signal is similarly input to the video display processing circuit 107, and the audio signal is input to the input terminal B of the switching circuit 109. The video display processing circuit 107 selectively outputs one of the two input video signals, and performs scaling processing such as reducing the individual screen size of both video signals, parallel two-screen simultaneous display processing, etc. Video signal processing is performed and output from the video output terminal P to the display device. Note that selection of processing control in the video display processing circuit 107 is controlled by the microcomputer 113 by a user's remote control 115 operation. As for audio, the audio signal at the output of the switching circuit 105 is appropriately processed by the audio processing circuit 110 via the input terminal A of the switching circuit 109 and output from the audio output terminal Q.
[0016]
The microcomputer 113 and the remote control receiver 114 receive power from the standby power supply circuit 120 so that the simultaneous recording / playback apparatus can receive and process instructions from the remote control 115 by the user even in a standby state where the power is off. Received supply. The system power supply circuit 121 is a main power source of the simultaneous recording / reproducing apparatus, supplies power to the entire simultaneous recording / reproducing apparatus, and starts up in response to a power-on instruction from the microcomputer 113. The power-on reset pulse generation circuit 116 detects the power supply rising of the system power supply circuit 121 and inputs a reset pulse to the microcomputer 113. The microcomputer 113 receives the reset pulse and powers on (starts up) the simultaneous recording / playback apparatus.
[0017]
When the microcomputer 113 is powered off, the tuning state of the first tuner 101 and the second tuner and the switching state of the switching circuits 103, 105, 106, 109 (hereinafter, these states are referred to as the last channel). (Referred to as a state) is stored in a non-volatile memory (not shown) or the like, and when the reset pulse is received from the power-on reset pulse generation circuit 116, the last channel state before power-off is reproduced (call) To do. However, when the simultaneous recording / reproducing apparatus is in the simultaneous recording / reproducing state, for example, the recorded part is reproduced while recording the channel selection program of the first tuner 101 (the switching circuit 103 receives the input A, If the switching circuit 105 is turned off when the input B is selected), the switching circuit 105 is switched to the input A when the power is turned on. This is to stop the playback operation when the power is turned on even when power is turned off in the state of simultaneous recording and reproduction so that the program of the selected channel that has been simultaneously recorded and reproduced can be viewed.
[0018]
Next, the main part of the present invention will be described. First, a case where the user is viewing in the normal display mode state in which one program on the entire television screen is displayed on the display device 108 will be described. This display setting can also be set by the remote controller 115 as desired by the user.
[0019]
First, when the user gives a power-on instruction using the remote controller 115, the system power supply is activated. In response to this, the power-on reset pulse generation circuit 116 outputs a reset pulse signal and inputs it to the microcomputer 113. Upon receiving the reset pulse signal, the microcomputer 113 reproduces the last channel state before the previous power-off, and simultaneously selects the first tuner or the second tuner channel selection program via the switching circuit 103. The recording / reproducing circuit 104 inputs the recording start command to the simultaneous recording / reproducing circuit 104, and the simultaneous recording / reproducing circuit 104 starts recording.
[0020]
For ease of explanation, it is assumed that the video / audio signal of the first tuner 101 is being viewed without passing through the simultaneous recording / playback circuit 104 without being played back now. In this state, the switching circuit 103 is switched to the input terminal A, the switching circuits 105 and 109 are switched to the input terminal A, and the channel selection program of the first tuner 101 is recorded by the simultaneous recording / playback circuit 104, while The video display processing circuit 107 performs video processing, displays video on a display device connected to the video output terminal P, and outputs an audio signal from the audio output terminal Q via the audio processing circuit 110. . This series of control processing is performed according to a program built in the microcomputer 113.
[0021]
An operation when the user switches from this state to the simultaneous recording / playback operation will be described. When the user performs a playback operation using the remote controller 115, the microcomputer 113 controls the simultaneous recording / playback circuit 104 and the switching circuit 105. That is, the microcomputer 113 instructs the simultaneous recording / reproducing circuit 104 to reproduce, and switches the input of the switching circuit 105 from the input A to the input B side. When the simultaneous recording / reproducing command signal output from the microcomputer 113 is input to the simultaneous recording / reproducing circuit 104, the simultaneous recording / reproducing circuit 104 executes the simultaneous recording / reproducing operation to reproduce the recorded program from a predetermined place, and the reproduction signal is The video is displayed on the display device connected to the video output terminal P through the switching circuit 105, and the audio signal of the reproduction signal is output from the audio output terminal Q.
[0022]
As described above, if the power is turned on, it is possible to record the program that was selected before the power was turned off, so that the user does not forget to perform the recording operation. Since it starts, there is an effect that the recording operation of the user as in the conventional case is eliminated, and there is also an effect that the time loss that the user has performed the recording operation can be eliminated and the recording can be started as soon as possible.
[0023]
Of course, if there is a channel selection operation after power-on and reproduction of the last channel state, it goes without saying that the channel selection program of the operated tuner is recorded. For example, when the program tuning is performed by the second tuner, the switching circuit 103 is switched from the input A to the input B side, and the tuning program of the second tuner is selected by the simultaneous recording / reproducing circuit 104. Will be recorded.
As described above, in this embodiment, recording is always performed and input switching and audio switching of a recorded program are linked.
[0024]
Next, the operation of the present embodiment when the user views the program by setting the parallel two-screen display mode in which the program is displayed on the display device connected to the video output terminal P divided into two parallel screens will be described. .
[0025]
In FIG. 1, when a user sends a parallel two-screen display instruction using the remote controller 115, the microcomputer 113 that has received the control instruction via the remote control receiver 114 receives the switching circuit 103, the switching circuit 105, the switching circuit 106, and the switching circuit 109. Switching control and simultaneous recording / reproducing circuit 104 and video display processing circuit 107 are controlled. FIG. 2 shows an example of parallel two-screen display. This will be described in detail below.
[0026]
For ease of explanation, the video / audio signal of the first tuner 101 is viewed while being recorded by the simultaneous recording / playback circuit 104 without being reproduced now, and the video signal of the first tuner 101 and the second It is assumed that the video signal of the tuner 102 is displayed on the display device in parallel two screens (the left video is the video of the first tuner 101). In this state, the switching circuit 103 is switched to the input terminal A, the switching circuits 105 and 109 are switched to the input terminal A, the switching circuit 106 is switched to the input terminal B, and the channel selection program of the first tuner 101 is switched. Is recorded by the simultaneous recording / reproducing circuit 104, while the channel selection program of the first tuner 101 and the second tuner 102 is processed by the video display processing circuit 107, and the display device displays the parallel two-screen display of the video. In addition, the audio signal of the channel selection program of the first tuner 101 is output from the audio output terminal Q via the audio processing circuit 110. This series of control processing is performed according to a program built in the microcomputer 113.
[0027]
An operation when the user switches to the reproduction operation from this state will be described. In the case of parallel two-screen display, it is assumed that the simultaneous recording / playback circuit 104 is recording a program in which an audio signal is output from the audio output terminal Q.
[0028]
When the user performs a playback operation using the remote controller 115, the microcomputer 113 controls the simultaneous recording / playback circuit 104 and the switching circuit 105. That is, the microcomputer 113 instructs the simultaneous recording / reproducing circuit 104 to reproduce, and switches the input of the switching circuit 105 from the input A to the input B side. When the simultaneous recording / reproducing command signal output from the microcomputer 113 is input to the simultaneous recording / reproducing circuit 104, the simultaneous recording / reproducing circuit 104 executes the simultaneous recording / reproducing operation to reproduce the recorded program from a predetermined place, and the reproduction signal is The video signal is displayed on the display device after passing through the switching circuit 105, and the audio signal of the reproduction signal is output from the audio output terminal Q.
[0029]
Also, from this state, if you want to record the second tuner's channel selection program, which is the right program displayed in parallel two screens, select the right program provided on the remote control 115, for example. The right program is selected by operating a button (not shown). FIG. 2 shows the screen display at that time. The entire screen is divided into two areas, and the selected programs of the first tuner and the second tuner are displayed respectively.
[0030]
When the right program selection button is operated, the microcomputer 113 switches the input of the switching circuit 103 from the input A to the input B side, and the simultaneous recording / reproducing circuit 104 records the channel selection program of the second tuner which is the right program. The simultaneous recording / playback is cleared, the input of the switching circuit 105 is switched to the input A, the input of the switching circuit 106 is switched to the input B, the input of the switching circuit 109 is switched to the input B, and the second tuner The audio signal of the selected program is output from the audio output terminal Q. In this way, the microcomputer 113 can switch the switching circuits 103 and 109 in conjunction with each other, and can view the video signal and the audio signal of the channel selection program of the second tuner while recording them.
[0031]
In FIG. 2, the program on the side where the note image is displayed is the program that is currently outputting audio. In the two-screen display, when a right program selection button (not shown) is operated, the sound output is switched to the right program, and the note is continuously output for a predetermined time or continuously after the switch to notify that the right program sound is output. Display an image. In the simultaneous recording / playback apparatus according to the present invention, since recording is always performed, it is not necessary to perform REC display on the screen. However, instead of the above note display, any program is recorded. REC display may be displayed. Such display processing is performed by the video display processing circuit 107.
[0032]
At this time, when the user performs a simultaneous recording / reproducing operation for recording and reproducing the selected program of the second tuner with the remote controller 115, the microcomputer 113 controls the simultaneous recording / reproducing circuit 104 and the switching circuit 106. . That is, the microcomputer 113 instructs the simultaneous recording / reproducing circuit 104 to perform simultaneous recording / reproducing, and switches the input of the switching circuit 106 from the input B to the input A side. When the simultaneous recording / reproducing command signal output from the microcomputer 113 is input to the simultaneous recording / reproducing circuit 104, the simultaneous recording / reproducing circuit 104 executes the simultaneous recording / reproducing operation to reproduce the recorded program from a predetermined place, and the reproduction signal is The display device connected to the video output terminal P through the switching circuit 106 displays the parallel two-screen video together with the program of the first tuner 101, and the audio signal of the reproduction signal is output from the audio output terminal Q.
[0033]
As described above, since the audio switching control and the selection of the recorded video can be performed in conjunction with each other, it is possible to always record the program being viewed even in the parallel two-screen display, and the user can switch the audio to the desired program. Even if it is viewed, it can be recorded in accordance with it. Therefore, if the user desires to reproduce the program video viewed in the past, it can be surely reproduced. Depending on the initial setting by the user's remote control 115 operation, it is possible to control the recorded program to be fixed to one program for viewing.
[0034]
As described above, in the present embodiment, when a plurality of programs are simultaneously displayed on the TV screen and only one program is viewed as a sound as well as a sound, it is possible to always record a sound-sound video. Even if the user selects the viewing program by switching the sound of the programs to be viewed from multiple simultaneously displayed programs, the user can record the viewed program without omission, so the user can It is possible to reproduce the past video that has been viewed.
[0035]
In the embodiment shown in FIG. 1, when two tuners are provided and the display device displays two screens in parallel, recording is always performed, and input switching and audio switching of the recorded program are linked. Although the program corresponding to the audio signal selected by the audio switching is recorded, the present invention is not limited to this, and it is obvious that there may be three or more recorded programs. If possible, the present invention can be applied to a case where three or more tuners are mounted and simultaneously displayed on the screen of the display device. Further, the program is not limited to the received program selected by the tuner, and it is a matter of course that an AV signal (video signal and audio signal) input from the outside may be included. .
[0036]
In addition, as an additional configuration of the present embodiment, a synchronization detection circuit 201 can be provided. It goes without saying that the operation described so far is possible without providing such a circuit. Here, the video signal from the output of the first tuner 101 and the video signal from the output of the second tuner 102 are input to the synchronization detection circuit 201. The synchronization detection circuit 201 detects whether or not a video signal is output from each tuner based on the presence or absence of a synchronization signal, and outputs a detection signal to the microcomputer 113. The microcomputer 113 determines whether or not a video signal is output from each tuner, and when it is determined that no video signal is output, the following processing can be performed.
[0037]
For example, if the broadcast ends and no sync signal is detected during recording, the recording can be stopped. In addition, the channel selection program of the second tuner is recorded, the broadcast is finished, the second tuner is determined not to have a video signal and is not being broadcast, and the first tuner is selected. When the video signal is output, the microcomputer 113 can also be controlled to record the program of the first tuner that is broadcasting.
[0038]
In the above-described embodiment, the recording is always possible while the power is turned on. However, the simultaneous recording / reproducing apparatus determines whether the recording can be always performed or the recording operation is required as in the related art. Of course, the selection may be made on an initial setting screen for setting various setting modes. Further, during recording, it is possible to indicate that recording is being performed, for example, with a red LED on the front surface of the housing of the apparatus.
[0039]
In addition, a hard disk drive (HDD), which is a recording medium constituting the simultaneous recording / reproducing circuit, has a limited recording capacity. When the capacity is exceeded, it is natural to overwrite and continue recording. That's it. Alternatively, regarding whether to exceed the capacity, it may be set on the initial setting screen whether to overwrite or stop recording. When the initial setting is made so as to stop the recording, it is a matter of course that the user can delete unnecessary recordings and secure an area where recording can be performed.
[0040]
If the configuration within the dotted line shown in FIG. 1 is used, a recording / playback device, a display device 108 that displays a video using, for example, a liquid crystal display element for video output of the video display processing circuit 107, and an audio of the audio processing circuit 110. If an R speaker 111 and an L speaker 112 that amplify and output an audio signal are provided at the output, and these are integrated, they can be applied as a television apparatus.
[0041]
【The invention's effect】
Troublesome user recording operations are eliminated, improving usability.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a recording / playback apparatus according to the present invention. FIG. 2 is a diagram showing an example of a screen display in the present invention.
DESCRIPTION OF SYMBOLS 100 ... Antenna, 101 ... 1st tuner, 102 ... 2nd tuner, 103 ... Switching circuit, 104 ... Simultaneous recording / reproducing circuit, 105 ... Switching circuit, 106 ... Switching circuit, 107 ... Video display processing circuit, 108 ... Display 109: switching circuit, 110: audio processing circuit, 111 ... R speaker, 112 ... L speaker, 113 ... microcomputer, 114 ... remote control receiver, 115 ... remote control, 116 ... power-on reset pulse generation circuit, 120 ... standby power supply Circuit 121 ... System power supply circuit 201 ... Synchronization detection circuit

Claims (3)

A plurality of channel selection means for receiving and selecting video signals and audio signals;
Recording / playback means capable of chasing playback for playing back a recorded part of the program while delaying time while recording the program selected by the channel selection means;
A first switching unit that selects any one of the outputs from the plurality of channel selection units and outputs to the recording / playback unit;
Video display processing means for performing processing for displaying a plurality of video signals output from the plurality of channel selection means on one screen;
Second switching means for selecting one of a plurality of audio signals output from the plurality of channel selection means;
In conjunction with the selection of the audio signal by the second switching means, the video signal corresponding to the audio signal selected by the user in the second switching means is recorded in the recording / playback means. Control means for controlling the switching means,
The recording / playback means comprises the follow-up playback of the program recorded by the recording / playback means in conjunction with an audio signal selection by the user. The control means controls the video display processing means so as to output a video signal corresponding to the audio signal selected by the second switching means with a display indicating that it has been selected. The recording / reproducing apparatus according to claim 1 .   3. A display unit that displays video of a program selected by the channel selection unit, an audio output unit that outputs audio of a program selected by the channel selection unit, and the recording / playback apparatus according to claim 1, A television device comprising:

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