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Data recording/reproducing device

A reproduction device and recording medium technology, applied in the direction of digital recording/reproduction, TV, color TV parts, etc., can solve the problems of reproduction operation influence, time difference variation, video signal cannot be reproduced stably, etc.

Inactive Publication Date: 2006-08-30
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Conversely, in the case where the reproduction operation is synchronized with the recording operation, the reproduction operation may be affected by the recording operation
When the recording operation becomes unstable as the video signal to be input from the outside and recorded on the disc is irregularly input, the reproduction operation also becomes unstable, and the video signal cannot be reproduced stably
[0008] In addition, in a recording / reproducing apparatus having a function of recording input data and simultaneously reproducing the data, if a recording system processing unit and a playback system processing unit are asynchronous, the time difference between the recording data and the reproduction data is not uniquely determined, and produces variation in the time difference

Method used

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Embodiment Construction

[0017] A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] The present invention is applied to such as figure 1 A recording / reproducing system 1 is shown.

[0019] The recording / reproducing system 1 includes a recording / reproducing device 2, a RAM (Random Access Memory) 3, a ROM (Read Only Memory) 4, and a system controller 5 connected to a host bus 1A. In this recording / reproducing system 1, the recording / reproducing operation of the recording / reproducing apparatus 2 is controlled in accordance with a control signal 5 input from the system controller 5. The system controller 5 is connected to the RAM 3 and the ROM 4 through the host bus IA, and controls the entire recording / reproducing system 1 if necessary.

[0020] First, the recording operation of the recording / reproducing apparatus 2 will be described.

[0021] The recording / reproducing device 2 is constituted as figure 2 shown. Under ...

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Abstract

A system for recording a recording video signal input to the A / D conversion processing section (18a) on a recording medium based on a recording clock generated by a recording system synchronous control section (42), and reproducing it based on a A system synchronization control section (44) for outputting video signals recorded on the recording medium to the outside. When switching and outputting the recording video signal input to the A / D conversion processing section (18a) and the reproduced video signal recorded in the recording medium, and then decoded and output by an MPEG AV decoder (31), the recording video signal is Temporarily stored in a frame synchronizer (43), and according to a reproduction clock generated by the playback system synchronization control section (44), the recording video signal stored in the frame synchronizer (43) and generated by the MTEG AV The reproduced video signal decoded by the decoder (31) is switched and output.

Description

[0001] This application is a divisional application of the application number 01117243.6, the filing date is March 17, 2001, and the invention title is "data recording / reproducing device". technical field [0002] The present invention relates to a data recording / reproducing device for recording data and reproducing the recorded data. Background technique [0003] Generally, in a recording / reproducing apparatus having a magnetic tape type recording medium, such as a VTR (Video Tape Recorder), it is often the case that the synchronization signal used is switched between recording and reproducing operations. That is, in general recording / reproducing apparatuses, it is often the case that a synchronizing signal is generated from an input video signal at the time of recording so that the recording operation is performed based on the synchronizing signal, whereas the reference signal at the time of reproduction is determined by a built-in A crystal oscillator is generated to perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/804H04N9/80H04N5/073G11B20/14H04N5/781H04N5/85H04N5/91H04N9/79H04N9/806
CPCH04N9/8063H04N5/781H04N9/7921H04N9/8042G11B20/14
Inventor 新田元宾田敏道太田正志大田起至
Owner SONY CORP
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