JP2002152661A - Picture recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a picture recording/reproducing device which can efficiently operate a chase reproduction function. SOLUTION: The device is provided with an input means (1) inputting a video sound signal, a recording/reproducing means (4) recording the inputted video sound signal and reproducing the recorded video sound signal, selection/ output means (5 and 8) selecting and outputting the inputted input video sound signal or the reproduced reproduction video sound signal, a picture recording/ reproducing control means (9) reproducing the recorded video sound signal while the video sound signal is recorded, and an output control means (9) selecting and outputting the reproduced video sound signal by the selection/ output means when the video sound signal being the object of recording differs from the video sound signal being the object of reproduction in simultaneous recording/reproduction and selecting and outputting the input video sound signal by the selection/output means when the video sound signal being the object of recording becomes substantially similar to the video sound signal being the object of reproduction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus capable of reproducing a recorded video / audio signal (program broadcast) while recording a video / audio signal (program broadcast).

[0002]

2. Description of the Related Art In recent years, research and development of a recording / reproducing apparatus having a follow-up reproducing function has been promoted. The follow-up playback function is a function of playing back an already recorded portion (scene) of a certain program while recording a certain program. If this function is used, a certain program can be time-shifted and reproduced during the broadcasting time of a certain program.

[0003]

However, the follow-up reproduction described above has the following problems.

(1) Even if the reproduction (time) catches up with the recording (time) during the follow-up reproduction, the recorded video / audio signal is continuously reproduced once. Recording involves an encoding process, and playback involves a decoding process. In other words, even when both the encoding process and the decoding process are not required and the reproduction can be performed in real time, the follow-up reproduction function works, and the encoding process and the decoding process are performed. . In particular, for those that the user does not want to save, a completely useless process of recording once is included.

[0005] (2) Even if the user does not want to save, once the follow-up playback function is activated, all programs are once recorded. The storage area of the recording destination is occupied by unnecessary data.

(3) During the follow-up reproduction, there is no way to accurately know the current recording status and reproduction status.

An object of the present invention has been made in view of the above-mentioned circumstances, and has as its object to provide the following recording / reproducing apparatus.

(1) A recording / reproducing apparatus capable of efficiently operating a follow-up reproducing function.

(2) A recording / reproducing apparatus capable of accurately informing the current recording status and reproducing status during follow-up reproduction.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and achieve the object, a recording / reproducing apparatus of the present invention is configured as follows.

(1) The present invention provides input means for inputting a video / audio signal, coding means for coding the video / audio signal input from the input means, and video / audio coded by the coding means. Recording means for recording a signal in a recording unit, reproducing means for reproducing an encoded video / audio signal from the recording unit, and decoding means for decoding the encoded video / audio signal reproduced by the reproducing means Selecting means for selecting one of the input video / audio signal input from the input means and the reproduced video / audio signal decoded by the decoding means; and selecting the signal selected by the selection means. An output unit for outputting, and a recording and reproducing unit for controlling the recording unit and the reproducing unit to record an input video and audio signal to the recording unit and reproducing a target video and audio signal from the recording unit. Control means, and in the recording / reproduction by the recording / reproduction control means, when the video / audio signal to be recorded is different from the video / audio signal to be reproduced, the selection means selects the decoded reproduction video / audio signal, and the output means And a first output control means for outputting a decoded video / audio signal decoded from the video / audio signal; A second output control for stopping the reproduction by the reproduction means and the decoding processing by the decoding means, causing the selection means to select an input video / audio signal, and causing the output means to output the input video / audio signal. Means.

(2) A recording / reproducing apparatus according to the present invention comprises: input means for inputting a video / audio signal; recording means for recording the video / audio signal input from the input means in a recording unit; A reproducing unit that reproduces a signal; a selecting unit that selects one of an input video / audio signal input from the input unit and a reproduced video / audio signal reproduced by the reproducing unit; Recording means for controlling the recording means and the reproducing means to output the output signal, and recording the input video / audio signal to the recording unit while reproducing the target video / audio signal from the recording unit. When recording / reproduction is performed by the reproduction control means and the recording / reproduction control means, information indicating the current recording and reproduction relationship is added to the signal output from the output means. And a recording and reproducing information processing means.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the process of playing back an already recorded portion (scene) of a certain program while recording a certain program by follow-up playback, the playback (time) is recorded (for example, by fast-forward playback). Time). Despite having caught up with the recording, if the recorded content is continued to be reproduced, an encoding process and a decoding process are also required, which is inefficient. Therefore, the recording / reproducing apparatus of the present invention is characterized in that the video / audio signal input from the input terminal is directly output from the output terminal when the reproduction catches up with the recording.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a recording / reproducing apparatus according to an example of the present invention. As shown in FIG. 1, the recording / reproducing apparatus includes a video / audio input unit 1 as input means,
A video / audio encoding unit 2 as an encoding unit, a buffer 3,
Read / write device 4 as recording / reproducing means, video / audio output unit 5 as output means, video / audio decoding unit 6 as decoding means, buffer 7, switch 8 as selection means, control unit 9 as various control means , And a status display control unit 10.

The video / audio signal unit 1 inputs a video / audio signal to a recording / reproducing apparatus. The video / audio encoding unit 2 encodes the video / audio signal input from the video / audio signal input unit 1. The buffer 3 temporarily stores the video / audio signal encoded by the video / audio encoding unit 2. The read / write device 4 records the encoded video / audio signal stored in the buffer 3 in a recording unit. Examples of the recording unit include a hard disk and an optical disk. Further, the read / write device 4 reproduces the encoded video / audio signal from the recording unit. The buffer 7 temporarily stores the encoded video / audio signal reproduced by the read / write device 4. The video / audio decoding unit 6 decodes the coded video / audio signal stored in the buffer 7. Switch 8
One of the input video / audio signal input from the video / audio input unit 1 and the reproduced video / audio signal decoded by the video / audio decoding unit 6 is selected. Video / audio output unit 5
Outputs the signal selected by the switch 8.

The control unit 9 controls the read / write device 4 to record the input video / audio signal in the recording unit,
A follow-up reproduction function for reproducing a target video / audio signal from the recording unit is executed. Also, the control unit 9 determines that the playback (time) is changed to the recording (time) when the follow-up playback function is being executed and the video / audio signal to be recorded is different from the video / audio signal to be played back. If not, the switch 8 selects the reproduced video / audio signal provided from the video / audio decoding unit 6 and causes the video / audio output unit 5 to output the reproduced video / audio signal. Further, the control unit 9
Indicates that the follow-up playback function is being executed and the video / audio signal to be recorded and the video / audio signal to be reproduced are substantially the same, that is, the reproduction (time) catches up with the recording (time). In this case, the input video / audio signal provided from the video / audio input unit 1 is selected by the switch 8, and the input video / audio signal is output from the video / audio output unit 5.
That is, in the process of executing the follow-up playback function, when the playback catches up with the recording, the control unit 9 causes the video / audio output unit 5 to directly output the video / audio signal input from the video / audio input unit 1. As a result, a real-time video / audio signal is output from the point in time when the reproduction catches up with the recording. If the user does not want to save the program broadcast, when the reproduction catches up with the recording, the control unit 9 performs useless processing, for example, the encoding by the video / audio encoding unit 2 and the reading / writing device 4. , And the processing such as decoding by the video / audio decoding unit 6 is stopped. Thus, unnecessary power consumption and the like can be suppressed. The control unit 9 monitors the recording time and the reproduction time to determine whether the reproduction has caught up with the recording.

After the reproduction has caught up with the recording and the temporary reproduction is stopped again, the temporarily stopped encoding by the video / audio encoding unit 2, recording / reproduction by the read / write device 4, and video / audio decoding. Processing such as decoding by the unit 6 is restarted. Thereafter, when the reproduction is instructed, the control unit 9
The reproduced video / audio signal provided from the video / audio decoding unit 6 is selected by the switch 8, and the reproduced video / audio signal is output from the video / audio output unit 5.

Next, the switching of the video and audio signals will be summarized with reference to the flowchart shown in FIG.

When the recording is started in association with the reserved recording or the like (S
T1), a recording end time T corresponding to the recording reservation is set (ST2). In response to a follow-up playback request (ST
3), follow-up playback is started (ST4). At this time,
The current playback time T1 and the current recording time T2 are obtained (ST5).

When T1 = T2 (ST6, YES), that is, when the reproduction time catches up with the recording time, the switch 8 selects the video / audio signal input from the video / audio input unit 1, and the selected video / audio signal is selected. The video / audio signal is output from the video / audio output unit 5 (ST7). At this time, the follow-up playback ends (ST8). Further, T = T2 (ST
9, YES), that is, when the current recording time reaches the recording end time, the recording ends (ST10).

T1 ≠ T2 (ST6, NO) and T ≠
In the case of T2 (ST11, NO), that is, until the reproduction time catches up with the recording time, the video / audio signal output from the video / audio decoding unit 6 is selected by the switch 8, and the selected video / audio signal is Output from the video / audio output unit 5. When T = T2 (ST11, YES), that is, when the current recording time reaches the recording end time, the recording ends (ST12).

Next, with reference to the flowchart shown in FIG. 3, a case where the video / audio signal (program broadcast) to be subjected to the follow-up reproduction is not stored according to the user's request will be described.

When the recording is started with the reservation recording or the like (S
T1), a recording end time T corresponding to the recording reservation is set (ST2). When a follow-up playback request is received (S
T3), the reproduction start position A1 and the recording end position A2 in the recording unit are obtained (ST4). Recording end position A2
Is the last position of the video / audio signal that has been continuously recorded until the follow-up playback request is received. That is, an area from the reproduction start position A1 to the recording end position A2 is secured as an area having a storage capacity required for recording a video / audio signal corresponding to a difference between the reproduction time and the recording time. Control unit 9
Calculates the storage capacity required for recording a video / audio signal corresponding to the difference between the reproduction time and the recording time by acquiring the reproduction start position A1 and the recording end position A2. A storage area corresponding to the storage capacity calculated by the control unit 9 is secured in the recording unit. A video and audio signal is recorded in the reserved storage area, and a reproduced video and audio signal among the video and audio signals recorded in the reserved recording area is overwritten with a new video and audio signal. As a result, the follow-up playback function can be realized with only the necessary minimum storage capacity. The situation is shown below.

When the follow-up reproduction is started (ST5), the reproduction start position A1 is set to the recording start position, and the recording is continued (ST6). At this time, the reproduction time T1 and the recording time T2 are obtained (ST7).

When T1 = T2 (ST8, YES), that is, when the reproduction time catches up with the recording time, the switch 8 selects the video / audio signal input from the video / audio input unit 1, and the selected video / audio signal is selected. The video / audio signal is output from the video / audio output unit 5 (ST9). At this time, the follow-up playback ends (ST10). Further, T = T2 (ST
11, YES), that is, when the current recording time reaches the recording end time, the recording ends (ST12).

If T1 ≠ T2 (ST8, NO), the current playback position A1 ′ and the current recording position A2 ′ are obtained (S8).
T13). When A1 '= A2 (ST14, YES), that is, when the current playback position A1' reaches the last recording end position A2 of the secured area, A1 '= A1 (ST
15). That is, the process moves to the reproduction start position A1, which is the head position of the area where the current reproduction position A1 'is secured. When A2 '= A2 (ST16, YES), that is, when the current recording position A2' reaches the recording end position A2,
A2 '= A1 (ST17). That is, the reproduction start position A which is the head position of the area where the current recording position A2 is secured.
Move to 1.

If T ≠ T2 (ST18, NO), that is, until the reproduction time catches up with the recording time, the processing after ST7 is repeated, and the video output from the video / audio decoding unit 6 by the switch 8 is repeated. The audio signal is selected, and the selected video / audio signal is output from the video / audio output unit 5. When T = T2 (ST18, YES), that is, when the current recording time reaches the recording end time, the recording ends (ST19).

Next, with reference to FIG. 4, a description will be given of the display of information indicating the relationship between the current recording and the reproduction during the follow-up reproduction. The current recording time and playback time sent from the control unit are input to the status information display unit 10. The status information display unit 10 adds, to the video / audio signal output from the video / audio output unit 5, information indicating the relationship between the current recording and reproduction during the follow-up reproduction based on the current recording time and reproduction time. The information indicating the relationship between the current recording and the playback during the follow-up playback is, for example, an image as shown in FIG. 4 that allows the viewer to visually recognize the relationship between the recording time and the playback time. The image may directly display the recording time and the reproduction time.

It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified in the implementation stage without departing from the scope of the invention. In addition, the embodiments may be implemented in appropriate combinations as much as possible, in which case the combined effects can be obtained. Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriate combinations of a plurality of disclosed constituent elements. For example, even if some components are deleted from all the components shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effects described in the column of the effect of the invention can be solved. If you get
A configuration from which this configuration requirement is deleted can be extracted as an invention.

[0031]

According to the present invention, the following recording / reproducing apparatus can be provided.

(1) A recording / reproducing apparatus capable of operating the follow-up reproducing function efficiently.

(2) A recording / reproducing apparatus capable of accurately informing the current recording status and reproduction status during follow-up reproduction.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a recording / reproducing apparatus according to an example of the present invention.

FIG. 2 is a flowchart for explaining switching of a video / audio signal.

FIG. 3 is a flowchart for explaining effective use of a storage area of a storage unit when video and audio signals are not stored.

FIG. 4 is a diagram showing an example of a screen on which the relationship between a recording time and a reproduction time is visually displayed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 video / audio input unit 2 video / audio encoding unit 3 buffer 4 read / write device 5 video / audio output unit 6 video / audio decoding unit 7 buffer 8 switch 9 control unit 10 status display control unit

Claims (4)

[Claims] An input unit for inputting a video / audio signal; a recording unit for recording the video / audio signal input from the input unit in a recording unit; a reproducing unit for reproducing the video / audio signal from the recording unit; Selecting means for selecting one of the input video / audio signal input from the input means and the reproduced video / audio signal reproduced by the reproducing means; output means for outputting the signal selected by the selecting means; A recording / playback control unit that controls the recording unit and the playback unit to play back a target video / audio signal from the recording unit while recording an input video / audio signal in the recording unit; In the recording and reproduction by the means, when the video and audio signal of the recording target and the video and audio signal of the reproduction target are different, the reproduction video and audio signal is selected by the selection unit,
A first output control means for outputting a reproduced video / audio signal from the output means; and a video / audio signal to be recorded and a video / audio signal to be reproduced are substantially the same in the recording / reproduction control by the recording / reproduction control means. And a second output control means for causing the selection means to select an input video / audio signal and the output means to output the input video / audio signal. 2. An input unit for inputting a video and audio signal, an encoding unit for encoding the video and audio signal input from the input unit, and a video and audio signal encoded by the encoding unit in a recording unit. Recording means for recording; reproducing means for reproducing an encoded video / audio signal from the recording unit; decoding means for decoding the encoded video / audio signal reproduced by the reproducing means; and the input means Selecting means for selecting one of the input video / audio signal input from the CPU and the reproduced video / audio signal decoded by the decoding means; and output means for outputting the signal selected by the selecting means. A recording and playback control unit that controls the recording unit and the playback unit to record an input video and audio signal to the recording unit, and reproduces a target video and audio signal from the recording unit; In the recording / reproduction by the recording / reproduction control means, when the video / audio signal to be recorded is different from the video / audio signal to be reproduced, the reproduction video / audio signal decoded by the selection means is selected and decoded by the output means. First output control means for outputting the reproduced video / audio signal, and in the recording / reproduction control by the recording / reproduction control means, when the video / audio signal to be recorded and the video / audio signal to be reproduced are substantially the same, A second output control unit that stops the reproduction by the reproduction unit and the decoding process by the decoding unit, causes the selection unit to select an input video / audio signal, and causes the output unit to output the input video / audio signal. A recording and playback device comprising: 3. An input unit for inputting a video / audio signal, a recording unit for recording the video / audio signal input from the input unit in a recording unit, a reproducing unit for reproducing the video / audio signal from the recording unit, Selecting means for selecting one of the input video / audio signal input from the input means and the reproduced video / audio signal reproduced by the reproducing means; output means for outputting the signal selected by the selecting means; A recording / playback control unit that controls the recording unit and the playback unit to play back a target video / audio signal from the recording unit while recording an input video / audio signal in the recording unit; In the recording / reproducing, a management unit that manages a reproduction time and a recording time, and a video / audio signal corresponding to a difference between the reproduction time and the recording time managed by the management unit. Calculating means for calculating a required storage capacity; a storage area corresponding to the storage capacity calculated by the calculation means is secured in the recording unit; A signal is recorded, and a video and audio signal that has been reproduced by the reproducing means among the video and audio signals recorded in the secured recording area is overwritten with a new video and audio signal by the recording means. A recording / reproducing apparatus, comprising: control means; 4. An input unit for inputting a video / audio signal, a recording unit for recording the video / audio signal input from the input unit in a recording unit, a reproducing unit for reproducing the video / audio signal from the recording unit, Selecting means for selecting one of the input video / audio signal input from the input means and the reproduced video / audio signal reproduced by the reproducing means; output means for outputting the signal selected by the selecting means; A recording and playback control unit that controls the recording unit and the playback unit to play back a target video and audio signal from the recording unit while recording an input video and audio signal to the recording unit; Recording / reproducing information processing means for adding information indicating a current recording / reproducing relationship to a signal output from the output means when recording / reproducing is being performed by the means. A recording and playback device comprising: