JP2003022603A - Recording/reproducing/editing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording/reproducing/editing device in which the time required for reproduction start after reproduction instruction is shortened. SOLUTION: In a process in which a buffer memory 104 having a region A105 and a region B106 is used to carry out transmission from input data 101 to a buffer memory 104 and transmission from the buffer memory 104 to a storage device 107, and input data 101 are recorded on the storage device 107, a fixed amount of data from a recording start point is stored into the region A105. When reproduction from the recording start point is instructed after a recording stop instruction, transmission from the region A105 to output data 102 is carried out to start the reproduction, and subsequent data are read to the region B106. The reproduction is carried out from the region B106 when the reproduction from the region A105 is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing / editing apparatus for recording / reproducing / editing a real-time signal such as audio or video using a recording device.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application No. 2000-37753 has been used as a recording / reproducing system for recording and reproducing on a recording medium.
The one described in Japanese Patent No. 9 is known.

In the conventional recording / reproducing method, at the time of recording, when a certain amount of input data is stored in the buffer memory, it is transferred to a recording device, and this is repeated to realize recording.

Further, at the time of reproduction, the reproduction is realized by transferring the data read from the recording device to the output side when a certain amount of data is stored in the buffer memory.

[0005]

However, in such a conventional recording method, transfer to the recording device is performed when a predetermined amount or more is stored in the buffer memory.
Recording will continue, and this amount of data may have been transferred even after the recording stop instruction. If there is a playback start instruction immediately after the recording stop instruction, this recording process is executed. After finishing, read the data from the recording device,
There was a problem that it would take time to replay because it would be replayed.

Further, even in the case of simply reproducing, the recording device is accessed, the data is read, and the reproduction is started from the time when the data is stored in the buffer memory at a certain amount or more. there were.

The present invention has been made in order to solve such a problem, and provides a recording / reproducing / editing method capable of shortening the time until the reproduction starts when a reproduction instruction is issued.

[0008]

A recording / reproducing / editing apparatus of the present invention has a recording device for reading data from a recording medium and writing data to the recording medium, and a buffer memory, and stores the input data as described above. A stream controller for transferring to the recording device while buffering in the buffer memory and outputting the data read from the recording device while buffering in the buffer memory, and controlling the recording device and the stream controller The stream controller has a control unit and stores data in the buffer memory of the stream controller.

With this configuration, when reproducing from the data stored in the buffer memory, the time until the reproduction is started can be shortened.

Further, the recording / reproducing / editing apparatus of the present invention is characterized in that when input data is recorded by the recording device, a certain amount is stored in the buffer memory from a recording start point. have.

With this configuration, when the recording is started from the recording start point after the recording stop instruction, the time until the reproduction is started can be shortened.

Further, the recording / reproducing / editing apparatus of the present invention has a structure characterized in that when the recording device reads and outputs data, a certain amount is stored in the buffer memory from the reproduction start point. is doing.

With this configuration, when the reproduction is started again from the same reproduction start point after the reproduction is completed, the time until the reproduction is started can be shortened.

Further, the recording / reproducing / editing apparatus of the present invention, when reading and reproducing the data by the recording device and performing an edit to replace a partial section of the data being reproduced by the input data, a fixed amount from the reproduction starting point. Is stored in the buffer memory and a certain amount from the recording start point is stored in the buffer memory.

With this configuration, after the editing is completed, when the reproduction is started again from the same reproduction start point and when the reproduction is started from the recording start point, the time until the reproduction start can be shortened and the reproduction start point to the recording start point can be reduced. Even when the period is short, the same data as the data recorded in the recording device can be reproduced from the buffer memory.

Further, in the recording / reproducing / editing apparatus of the present invention, when reproduction is instructed during the recording process, at the instructed time, the transfer to the recording device is stopped and the input data is stored in the buffer memory. Has a configuration characterized by storing untransferred data.

With this configuration, it is possible to shift to the reproduction processing without waiting for the end of the recording processing, and it is possible to shorten the time until the reproduction is started after the recording stop instruction.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a recording / reproducing / editing apparatus according to the first embodiment of the present invention.

As shown in FIG. 1, the recording / reproducing / editing apparatus according to the first embodiment of the present invention comprises a stream controller 1
03, a buffer memory 104, a recording device 107, and a control unit 108. The input data 101 is input from the outside and the output data 102 is output to the outside.

The stream controller 103 transfers the input data 101 to the buffer memory 104, the buffer memory 104 to the recording device 107, the recording device 107 to the buffer memory 104, and the buffer memory 104 to the output data 102. The transfer is performed.

The buffer memory 104 buffers data at the time of recording and reproduction, and has an area A1.
05 and a region B106.

The recording device 107 is for recording on a recording medium, and is a DVD-RAM drive, hard disk drive, MO drive, MD drive, or the like.

The control unit 108 controls the stream controller 103 and the recording device 107.
It is composed of a CPU and the like.

The buffer memory 104 can be used as a ring buffer. That is, the buffer memory 104, for example, when the capacity is A bytes,
It is a buffer which records from address 0 and returns to address 0 and records when address A-1 is reached. A ring buffer can be configured for each area.

The operation of the recording / reproducing / editing apparatus configured as described above will be described.

When the user is provided with reproduction from a certain point of the data recorded on the recording medium by one operation, the data after the designated point is recorded in the area A10.
In that state, if the reproduction from the designated point is instructed by performing processing such as reproduction at another position using the area B106 in that state, first import into the area A105. Playback is started from the existing data, and area A10
The data after the point which has been taken into the area 5 is read from the recording device 107 and transferred to the area B 106 while being reproduced from the area A 105. When the transfer from the area A 105 to the output data 102 is completed, the transfer from the area B 106 to the output data 102 is performed. The area B106 is a ring buffer, and the reproduction is continued using the area B106 until the reproduction is completed. Reproduction is realized by the control by the control unit 108 as described above.

In this case, the area A105 reads out the data from the recording device 107, outputs the data in the output data 1 at the time until the data can be buffered and output in the area B106.
It has a capacity larger than the amount of data output as 02.

According to the first embodiment of the present invention as described above, by saving the data in the area A105 of the buffer memory 104 in advance, the time from the saved data to the start of reproduction can be reduced. It can be shortened.

Next, a second embodiment of the present invention will be described with reference to FIG.

Since the structure is the same as that of the first embodiment shown in FIG. 1, its explanation is omitted.

In FIG. 2, first, the input data 101 from the outside is continuously taken into the area A105 of the buffer memory 104 by the stream controller 103 (203). After the total capacity Y has been input to the area A105, the area B is taken into the area B106 (20
4) In this case, the area A has a capacity of Y bytes or more.

The data stored in the buffer memory 104 is stored in the buffer memory 104 at a predetermined amount X, and the data in the area A105 is stored in the recording device 1.
It transfers to 07 (206). Data having a capacity of Y or more is transferred from the area B106. When the transfer to the recording device 107 is completed (determined at 207), the buffer memory 1
After waiting for a certain amount of X to be stored in 04, the data is transferred to the recording device 107. This operation is repeated until recording is completed.

The area A105 has a capacity of Y bytes or more, and Y bytes of data are stored from the recording start point. In the area B106, when the transfer to the recording device 107 is completed, the area may be overwritten and used as a ring buffer.

The capacity of Y is output as the output data 102 during the time until the recording process is completed, and after that, the reproduction data is read from the recording device 107, buffered in the area B106, and ready to be output. It is more than the amount of data to be processed.

According to the second embodiment of the present invention as described above, by storing the data from the recording start point in the area A105 in the buffer memory 104, the recording start is started immediately after the recording stop instruction. When there is a reproduction instruction from a point, the time until the reproduction starts can be shortened.

Next, a third embodiment of the present invention will be described with reference to FIG.

In FIG. 3, first, the recording device 107
The data read from the stream controller 1
By 03, the data is continuously taken into the area A 105 of the buffer memory 104 (303). After a total of Y bytes have been input to the area A105, the area B is taken into the area B106 (304). In this case, the area A has a capacity of Y bytes or more.

As described above, when the data stored in the buffer memory 104 is stored in the buffer memory 104 by a certain amount, the transfer of the data in the buffer memory 104 to the output data 102 is started (306). The data is continuously transferred from the buffer memory 104 to the output data 102 until the reproduction is completed.

The area A105 has a capacity of Y bytes or more, and Y bytes of data are stored from the reproduction start point. The area B106 may be overwritten when the transfer to the output data 102 is completed, and is used as a ring buffer.

The capacity of Y is equal to or larger than the amount of data to be output as the output data 102 during the time until the data is read from the recording device 107, buffered in the area B106, and output becomes possible from the output data 102. .

According to the third embodiment of the present invention as described above, a certain amount of data is stored in the area A105 in the buffer memory 104 from the reproduction start point, so that the same reproduction start position can be reproduced again. When there is a playback instruction of
It is possible to shorten the time until the start of reproduction.

Next, FIG. 4 shows a recording / reproducing / editing apparatus according to a fourth embodiment of the present invention.

In FIG. 4, a configuration diagram of the first to third embodiments is different from that of FIG.
4 has an area A401, an area B402, an area C403, and an area D404.

The area A401 is an area for storing a fixed amount from the reproduction start point, and the area B402 is an area A4.
Area C403 is an area for performing reproduction from 01 onward.
Is an area for storing a certain amount from the recording start point, and area D404 is an area for processing the recording data of area C403 and thereafter.

The operation of the recording / reproducing / editing apparatus configured as described above will be described with reference to FIG.

When the recorded data is edited by replacing the edit start point to the edit end point with the input data, the recorded data is continuously reproduced as A, B and C, and is input at that time. The input data 101 being recorded is recorded by the recording device 107 in an area different from the recorded data, and is reproduced as A, D, and C by the management data, thereby realizing the editing. In this case, as in the third embodiment, a predetermined amount X is reproduced from the reproduction start point using the area A401, and only this X is stored.
The reproduced data after that is reproduced using the area B402. Also, as in the second embodiment, a fixed amount Y is recorded using the area C403 from the recording start point, and this amount is saved, and the subsequent recording data is recorded using the area D404.

Here, from the reproduction start point to the editing start point, M
Is shorter than X, by reproducing M from the beginning of the area A401, by reproducing from the area C403,
The same data as that recorded in the recording device will be reproduced.

According to the fourth embodiment of the present invention as described above, the data from the reproduction start point is stored in the area A401 in the buffer memory 104, and the area C403 is stored.
By saving the data from the recording start point in
It is possible to shorten the playback time from the playback start point and the playback time from the recording start point, and to play back the same data as that recorded in the recording device even when the playback start point to the recording start point is short. it can.

Next, the operation of the fifth embodiment of the present invention will be described with reference to FIG.

The structure is the same as that of the first to third embodiments shown in FIG.
Since it is the same as, the description will be omitted.

In the case where the recording process is performed using the area A105, if the reproduction start instruction is given after the recording stop instruction,
At that point, the recording process is interrupted, the untransferred data due to the interruption is stored in the area A, and the reproducing process is started.

In the reproduction process, the recording device 107
The data is read out from the memory, transferred to the output data 102 while being buffered in the area B106, and the reproduction is started.

When a certain amount of data is stored in the area B106, the reading from the recording device 107 is stopped, and the data stored in the area A105 is transferred to the recording device 107 and recorded. When the transfer from the area A105 to the recording device 107 is completed, the recording device 107 is read again, the read data is transferred to the area B106, and the reproduction is continued.

According to the fifth embodiment of the present invention as described above, when there is a reproduction instruction during the recording process after the recording stop instruction, the area A 105 in the buffer memory 104 is not yet written to the recording device 107. By saving the transfer data and proceeding to the reproduction processing, the time until the reproduction starts can be shortened.

[0056]

As described above, according to the present invention, a recording device and a buffer memory are used to transfer input data to and from the recording device while buffering the input data in the buffer memory. A stream controller that outputs the data while buffering the data in a buffer memory, and a control unit that controls the recording device and the stream controller. By storing the data in the buffer memory of the stream controller, It is possible to provide a recording / reproducing / editing apparatus having an excellent effect that the time until the reproduction is started can be shortened when reproducing from the data stored in the memory.

[Brief description of drawings]

FIG. 1 is a block diagram showing a recording / reproducing / editing apparatus according to a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the recording / reproducing / editing apparatus according to the second embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of the recording / reproducing / editing apparatus according to the third embodiment of the present invention.

FIG. 4 is a block diagram showing a recording / reproducing / editing apparatus according to a fourth embodiment of the present invention.

FIG. 5 is a data schematic diagram for explaining the operation of the recording / reproducing / editing apparatus according to the fourth embodiment of the present invention.

FIG. 6 is a data schematic diagram for explaining the operation of the recording / reproducing / editing apparatus according to the fifth embodiment of the present invention.

[Explanation of symbols]

101 input data 102 output data 103 stream controller 104 buffer memory 105 area A 106 area B 107 recording device 108 control unit 201 data input 202 data amount judgment processing 203 input to area A 203 transfer processing to area A 204 area B Transfer process 205 to buffer memory Judgment amount of untransferred data 206 Buffer memory transfer instruction process to recording device 207 Recording device transfer end determination process 301 Data read 302 Judgment of amount of data input to area A Processing 303 Transfer processing to area A 304 Transfer processing to area B 305 Output data output determination processing 306 Transfer instruction from buffer memory to output data 307 Data output 401 Area A 402 Area B 403 Area C 404 Area D

Claims (5)

[Claims] 1. A recording device that reads data from a recording medium and writes data to the recording medium, and a buffer memory, and transfers input data to the recording device while buffering the input data in the buffer memory. And a stream controller that outputs the data read from the recording device while buffering the data in the buffer memory, and a control unit that controls the recording device and the stream controller. A recording / reproducing / editing device characterized in that data is stored in the. 2. The recording / reproducing / editing apparatus according to claim 1, wherein a predetermined amount of data is stored in the buffer memory from a recording start point when input data is recorded by the recording device. 3. The recording / reproducing / editing apparatus according to claim 1, wherein a fixed amount is stored in the buffer memory from a reproduction start point when the recording device reads and outputs the data. 4. When the recording device reads and reproduces data and edits a part of the data being reproduced by replacing the input data with the input data, a predetermined amount is stored in the buffer memory from the reproduction start point. 2. The recording / reproducing / editing apparatus according to claim 1, further comprising storing a fixed amount in the buffer memory from a recording start point. 5. When reproduction is instructed during the recording process,
2. The recording / reproducing / editing apparatus according to claim 1, wherein the transfer to the recording device is stopped at the time of the instruction, and the untransferred data of the input data is stored in the buffer memory.