JP2008099081A - Recording reproduction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording reproduction device which simplifies an operation for performing a time shift reproduction and improves operability for a user. <P>SOLUTION: If a time shift reproduction key is pressed down, a controller 10 instructs a tuner 11 and a hard disk device 12 to record a program of a channel selected by an operating portion 22 (S1). Further, the controller 10 instructs the hard disk device 12 to read data recorded by a recording head 12W of the hard disk device 12 concurrently with the recording and to reproduce the recording (S2). Thus, the recording head 12W shifts to a recording start position, and a reading head 12R shifts to a vicinity of the position. When shifting to the recording start position, the recording head 12W starts the recording operation. Then, when shifting to the vicinity of the position, the reading head 12R reads the data from the position and starts the reproduction operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus having a time shift reproducing function for reading and reproducing data from an information storage medium while recording the data on the information storage medium.

  2. Description of the Related Art Conventionally, a recording / reproducing apparatus having a time-shift reproducing function for reading data from an information storage medium and reproducing the data while recording the data on the information storage medium has been put into practical use and widely used. The time shift playback function refers to a function of playback while recording, and time shift playback is also called alias playback. The recording / reproducing device is, for example, an optical disk device or an HDD (Hard Disk Drive).

First, this recording / reproducing apparatus is provided with a recording key and a time shift reproduction key. When this time-shift playback is performed in a conventional recording / playback apparatus, the user operates a recording key to record a television program or the like. As a result, if the recording / reproducing apparatus is an HDD, the recording head for recording moves to the recording start position, and the reading head for reproduction moves to the vicinity thereof. When the recording head moves to the recording start position, the recording operation starts, and when the reading head finishes the movement, the reading head waits. Then, when a reproduction instruction (instruction by key operation of time shift reproduction) is input thereafter, the reading head starts a reproduction operation from that position.
In this way, time shift reproduction is performed in the recording / reproducing apparatus.
On the other hand, a control device as described in Patent Document 1 has been proposed.
JP 2006-59404 A

However, the read head moves to the vicinity of the recording start position in response to the operation of the recording key at the start of time shift recording, and then moves to the previous recording start position when the time shift reproduction key is operated. In order to perform time shift reproduction, such as starting reproduction from the vicinity of the user, the user has to perform key operations at least twice.
Therefore, when time-shifted reproduction is performed in a conventional recording / reproducing apparatus, the user's operability is poor and the user is bothered.

  An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a recording / reproducing apparatus in which an operation for performing time shift reproduction is simplified and user operability is improved.

  The recording / reproducing apparatus of the present invention has the following configuration in order to solve the above problems.

(1) receiving means for receiving a broadcast signal transmitted from a broadcasting station;
Recording means for extracting data from the broadcast signal received by the receiving means and recording the data on an information storage medium;
A recording / reproducing apparatus comprising: a reproducing unit that reads the data recorded by the recording unit from the information storage medium and reproduces the data;
Comprising an operation means having a time shift reproduction key for accepting a time shift reproduction for reproducing while recording;
When the time shift playback key is operated,
The recording means records the data on the information storage medium,
The reproducing unit reads the data recorded by the recording unit from the information storage medium and reproduces it simultaneously with the recording by the recording unit.

In this configuration, the recording / reproducing device is, for example, an optical disc device or an HDD (Hard Disk Drive). The information storage medium is, for example, an optical disk or HD (Hard Disk). The optical disk is, for example, a DVD (Digital Versatile Disk) or a CD. The data to be recorded is mainly assumed to be data of a program being broadcast on television.
In this configuration, the recording unit and the reproduction unit execute time shift reproduction only by operating the time shift reproduction key. Therefore, the user only needs to press a time shift reproduction key, for example, when performing time shift reproduction.
As described above, the operation for performing the time shift reproduction can be simplified and the operability for the user can be improved.

(2) The reproduction means includes
A buffer memory for storing data;
Immediately after performing playback in the time shift playback, the playback is paused, the data recorded by the recording means is read from the information storage medium and stored in the buffer memory,
When reproduction is instructed, reproduction is performed from the data stored in the buffer memory.

In this configuration, the playback unit pauses playback immediately after playback in time-shift playback and waits for an instruction from the user. Then, during the pause, the reproducing unit reads the data recorded by the recording unit from the information storage medium and stores it in the buffer memory so that the subsequent reproduction can be performed smoothly. When playback is instructed, playback is started from the data stored in the buffer memory.
As a result, it is possible to reduce the time required from when the reproduction is instructed until the reproduction is started. Therefore, user convenience can be improved.

(3) The reproduction means alternately switches between reproduction and pause each time the time shift reproduction key is operated during the time shift reproduction.

In this configuration, a scene is assumed in which the user leaves the television screen during the time-shift playback.
In this configuration, the playback means switches between playback and pause only by operating the time-shift playback key. When the user leaves the television screen, for example, a time shift playback key is pressed. As a result, the recording state is continued, but the program that has been reproduced shifts from the reproduction state to the pause state. When the user returns to the television screen, for example, when the time-shift playback key is pressed, the program returns from the paused state to the playback state. That is, program playback resumes from the continuation of the interrupted program.
As described above, with a simple operation, the user can seamlessly view a program or the like even if he / she sits down during time shift reproduction. Therefore, user operability can be further improved.

  According to the present invention, it is possible to simplify the operation for performing the time shift reproduction and improve the operability of the user.

  Hereinafter, a recording / reproducing apparatus according to an embodiment of the present invention will be described.

FIG. 1 is a block diagram showing a configuration of a main part of a recording / reproducing apparatus according to an embodiment of the present invention. The recording / reproducing apparatus 100 is connected to a display 200 such as a TV (television) receiver. The display 200 further includes a speaker (not shown) that emits sound.
The recording / reproducing apparatus 100 includes a control unit 10 including a microcomputer (not shown) for centrally controlling and monitoring each unit of the apparatus, a tuner 11 that receives a television broadcast signal via an antenna, and a hard disk The apparatus 12 includes an encoder 14, a decoder 17, a selector 18, an OSD (on screen display) image generation circuit 19, and an operation unit 22.

  The control unit 10 includes a ROM 10A for storing a control program, and a RAM 10B as a work field for expanding data processed by the control program.

  The hard disk device 12 includes a hard disk 120 that stores data, a recording head 12 </ b> W that records data on the hard disk 120, and a read head 12 </ b> R that reads data from the hard disk 120.

The operation unit 22 has a plurality of types of keys including a time-shift reproduction key and a stop key (not shown) that are provided on the front surface of the recording / reproduction device 100 and the like to be operated by the user to give instructions. The time shift playback key is a key for accepting time shift playback for playback while recording. The time shift reproduction key when time shift reproduction is performed is a key for alternately switching between reproduction and pause.
In this embodiment, the operation unit 22 is provided on the front surface of the housing of the recording / reproducing apparatus 100, but may be provided on the operation surface of a separate remote controller.

  A broadcast signal transmitted from a broadcast station is received via an antenna and is given to the tuner 11. The tuner 11 extracts a broadcast signal of a channel designated by the control unit 10 from an antenna reception signal. Then, the tuner 11 outputs the video / audio signal included in the extracted broadcast signal to the encoder 14 and the other information M1 to the hard disk device 12 and the control unit 10, respectively. The information M1 includes information related to broadcasting such as an electronic program guide. Here, the channel is instructed when the user performs a channel designation operation on the operation unit 22 and the designation information is given to the control unit 10.

  The encoder 14 encodes the input video / audio signal (for example, by motion picture experts group (MPEG)) and outputs the encoded video / audio data to the hard disk device 12 as video / audio data M2. Under the control of the control unit 10, the hard disk device 12 records the input video / audio data M2 and information M1 on the hard disk 120 by the recording head 12W. Further, the hard disk device 12 reads video / audio data and the like from the hard disk 120 by the reading head 12R, and outputs the read data RM to the control unit 10 and the decoder 17. An instruction for controlling the operation mode (recording mode, reproduction mode, etc.) of the hard disk device 12 is given by operating the operation unit 22 by the user.

  Here, a buffer memory 7 is provided between the encoder 14 and the hard disk device 12. In this case, the video / audio data M <b> 2 output from the encoder 14 is temporarily stored in the buffer memory 7, sequentially read out, and input to the hard disk device 12. A buffer memory 6 is provided between the hard disk device 12 and the decoder 17. In this case, the video / audio data M2 output from the hard disk device 12 is temporarily stored in the buffer memory 6 and then sequentially read and input to the decoder 17. Thereby, it is possible to prevent the recording from being stopped during the recording or from being interrupted during the reproduction.

  The decoder 17 is supplied with video / audio data as read data RM. When the video / audio data is input, the decoder 17 decodes the video data (for example, in MPEG), encodes it into a video signal DA in a format that can be displayed on the display 200, and outputs it. The decoder 17 decodes the audio data, encodes the audio data into a format that can be emitted by the display 200, and outputs the audio signal DA.

  The OSD image generation circuit 19 generates an image based on data input from the control unit 10 and outputs an image signal DC.

  The selector 18 receives the image signal DC and the video / audio signal AV, and selectively receives either of them under the control of the control unit 10 and outputs it to the display 200. Alternatively, the selector 18 synthesizes the image signal DC and the video signal in the video / audio signal AV under the control of the control unit 10 and outputs them to the display 200. Further, the selector 18 also outputs an audio signal in the video / audio signal AV to the display 200.

  Thereby, the display 200 outputs a screen based on the supplied image signal DC, a screen based on the supplied composite image signal, or a screen based on the supplied video / audio signal DA. Furthermore, the audio signal is also processed by a speaker provided in the display 200, and the audio is output from the speaker. The user views video (image) and audio on the display 200.

  The hard disk 120 corresponds to the “information storage medium” of the present invention. The tuner 11 corresponds to the “reception unit” of the present invention. The control unit 10, the encoder 14, and the hard disk device 12 correspond to the “recording unit” of the present invention. Further, the control unit 10, the hard disk device 12, and the decoder 17 correspond to “reproducing means” of the present invention. The buffer memory 6 corresponds to the “buffer memory” of the present invention.

  FIG. 2 is a flowchart showing an operation performed by the control unit of the recording / reproducing apparatus according to the embodiment of the present invention. This operation is performed when the user presses the time-shift playback key.

  When the time shift playback key is pressed, the control unit 10 instructs the tuner 11 and the hard disk device 12 to record the program of the channel selected by the operation unit 22 (S1). Further, the control unit 10 instructs the hard disk device 12 to read and reproduce the data recorded by the recording head 12W of the hard disk device 12 simultaneously with the recording (recording) (S2). As a result, the recording head 12W moves to the recording start position, and the reading head 12R moves to the vicinity thereof. When the recording head 12W moves to the recording start position, the recording operation starts. Thereafter, when the reading head 12R moves to the vicinity thereof, the reading head 12R reads data from the position and starts a reproducing operation.

In this way, the user can cause the recording / reproducing apparatus 100 to execute time-shift reproduction simply by pressing the time-shift reproduction key. Therefore, the recording / reproducing apparatus 100 is easier to operate than the conventional recording / reproducing apparatus.
As described above, the operation for performing the time shift reproduction can be simplified and the operability for the user can be improved.

Further, immediately after the reproduction in the time shift reproduction, the control unit 10 instructs the hard disk device 12 to pause the reproduction (S3). Then, the control unit 10 determines whether any key operation is performed on the operation unit 22 during the temporary stop (S4). Here, immediately after the playback in the time-shift playback, the control unit 10 pauses the playback and waits for an instruction from the user. During the pause of playback, the control unit 10 causes the hard disk device 12 to read only data so that later playback can be performed smoothly. As a result, the hard disk device 12 stocks data in the buffer memory 6 until the capacity of the buffer memory 6 becomes full. When the reproduction in the time shift reproduction is instructed, the control unit 10 instructs the hard disk device 12 to read the data, and also decodes the data stored in the buffer memory 6 and reproduces it. To instruct.
As a result, it is possible to reduce the time required from when the reproduction is instructed until the reproduction is started. Therefore, user convenience can be improved.
In this embodiment, the process of S3 is executed, but in the case of implementation, the process of S3 may be passed.

  Then, every time the time shift playback key is operated during time shift playback, the control unit 10 alternately switches between playback and pause (S4 to S8 → S3). Here, a scene is assumed in which the user leaves the television screen while being in the middle of time-shift playback. This process will be described in detail. The control unit 10 determines whether any key operation is performed on the operation unit 22 during the pause (S4). When any key operation is performed, the control unit 10 determines whether or not the key operation is a time shift reproduction key (S5). If it is a time-shifted reproduction key, the control unit 10 instructs the hard disk device 12 to resume reproduction from the continuously stopped data (S6).

  Similarly, the control unit 10 determines whether any key operation has been performed on the operation unit 22 during time shift reproduction (S7). When any key operation is performed, the control unit 10 determines whether or not the key operation is a time shift reproduction key (S8). If it is a time shift reproduction key, the control unit 10 returns to S3 and continues the processing.

In this way, the control unit 10 alternately switches between reproduction and pause only by operating the time shift reproduction key. When the user leaves the display 200, the user presses the time shift playback key. As a result, the recording state is continued, but the program that has been reproduced shifts from the reproduction state to the pause state. When the user returns to the display 200 and presses the time-shift playback key, the program returns from the pause state to the playback state. That is, program playback resumes from the continuation of the interrupted program.
As described above, with a simple operation, the user can seamlessly view the program even if he / she sits down during time-shift playback. Therefore, user operability can be further improved.

Note that data recording / reading during time-shift reproduction in the above-described processing (S4 to S8 → S3) is performed more recently from previously recorded data along the direction indicated by the arrow 300. This is performed according to the order of the recorded data, that is, the time series order (see FIG. 3).
FIG. 3 is a diagram for explaining a recording position and a playback position when time-shift playback is performed in the recording / playback apparatus according to the embodiment of the present invention. The address PT0 indicates the storage address of the most recently recorded data (oldest data) in the data group recorded in the storage area AR of the hard disk 120. The address PT1 indicates an address corresponding to the current reproduction position RP by the read head 12R in the area AR. The address PT2 indicates an address corresponding to the recording position LP where data is currently recorded by the recording head 12W.

  On the other hand, if it is determined in S5 or S8 that the key is other than the time shift reproduction key, the control unit 10 determines whether or not the other key is a stop key (S9).

If the key is a stop key, the control unit 10 stops the time shift reproduction (S10) and ends the process. Thereby, recording and playback of the program are stopped.
And when it is keys other than a stop key, the control part 10 performs the process corresponding to the operated key.

  Moreover, the following modifications can be employed in the embodiment of the present invention.

(First modification)
The time shift key in the above embodiment is a key for accepting time shift reproduction except when time shift reproduction is being performed. When time shift reproduction is being performed, the time shift key is a key for alternately switching between reproduction and pause. It has become. This may confuse the user.

  Therefore, the control unit 10 instructs the OSD image generation circuit 19 and the selector 18 to perform OSD display of the function of the time shift key. As a result, the OSD image generation circuit 19 (display means) generates and outputs an OSD of a message indicating the function of the time shift key. The selector 18 outputs the composite image signal to the display 200.

As a result, for example, when time shift reproduction is being performed, a message indicating that the time shift key is a key for alternately switching between reproduction and pause is displayed on the display 200. When the time shift reproduction is not performed, a message indicating that the time shift key is a key for accepting the time shift reproduction is displayed on the display 200.
Thereby, since the user can grasp the function of the time shift key, there is no confusion.

The block diagram which shows the structure of the principal part of the recording / reproducing apparatus which is embodiment of this invention The flowchart which shows the operation | movement which the control part of the recording / reproducing apparatus which is embodiment of this invention performs The figure explaining the recording position and reproduction | regeneration position when time shift reproduction | regeneration is performed in the recording / reproducing apparatus which is embodiment of this invention

Explanation of symbols

6-buffer memory 7-buffer memory 10-control unit 11-tuner 12-hard disk device 12W-recording head 12R-reading head 14-encoder 17-decoder 18-selector 19-OSD image generation circuit 19-image generation circuit 22-operation Unit 100 -recording / reproducing apparatus 120 -hard disk 200 -display

Claims (4)

Receiving means for receiving a broadcast signal transmitted from a broadcasting station;
Recording means for extracting data from the broadcast signal received by the receiving means and recording the data on an information storage medium;
Replay means having a buffer memory for storing data, reading the data recorded by the recording means from the information storage medium, storing the data in the buffer memory, and sequentially reading and reproducing from the buffer memory; In a recording / reproducing apparatus comprising:
Comprising an operation means having a time shift reproduction key for accepting a time shift reproduction for reproducing while recording;
When the time shift playback key is operated,
The recording means records the data on the information storage medium,
The reproducing means reads the data recorded by the recording means from the information storage medium and reproduces it simultaneously with the recording by the recording means,
The reproducing means includes
Immediately after performing playback in the time shift playback, the playback is paused, the data recorded by the recording means is read from the information storage medium and stored in the buffer memory,
Each time the time shift playback key is operated during the time shift playback, the playback and pause are alternately switched,
A recording / reproducing apparatus that sequentially reads and reproduces data stored in the buffer memory when reproduction is instructed by operating the time shift reproduction key. Receiving means for receiving a broadcast signal transmitted from a broadcasting station;
Recording means for extracting data from the broadcast signal received by the receiving means and recording the data on an information storage medium;
A recording / reproducing apparatus comprising: a reproducing unit that reads the data recorded by the recording unit from the information storage medium and reproduces the data;
Comprising an operation means having a time shift reproduction key for accepting a time shift reproduction for reproducing while recording;
When the time shift playback key is operated,
The recording means records the data on the information storage medium,
The recording / reproducing apparatus that reads the data recorded by the recording unit from the information storage medium and reproduces it simultaneously with the recording by the recording unit. The reproducing means includes
A buffer memory for storing data;
Immediately after performing playback in the time shift playback, the playback is paused, the data recorded by the recording means is read from the information storage medium and stored in the buffer memory,
3. The recording / reproducing apparatus according to claim 2, wherein when reproduction is instructed, the data stored in the buffer memory is sequentially read and reproduced.   4. The recording / reproducing apparatus according to claim 2, wherein the reproduction unit alternately switches between reproduction and pause each time the time shift reproduction key is operated during the time shift reproduction.

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