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Method for implementing real time CD-RW of digital HD video recorder

A technology of hard disk video recorder and optical disc, which is applied in the direction of digital recording/reproduction, recording information storage, instruments, etc., and can solve the problems of relatively long time consumption and large amount of video file data, etc.

Active Publication Date: 2011-11-09
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The traditional method of burning video files to CD is as follows: save all the video files to the hard disk first, and then back them up to the CD after the whole interrogation process is over. long time

Method used

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  • Method for implementing real time CD-RW of digital HD video recorder
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  • Method for implementing real time CD-RW of digital HD video recorder

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the content of the present invention is not limited thereto.

[0024] The method for realizing real-time recording of optical discs in the digital hard disk video recorder of the present invention mainly includes the process of establishing a data buffer, the process of writing video data files into the buffer and the process of writing video data files into the optical disc. The digital hard disk video recorder has Q channels of video and audio compression data to be recorded, and Q is any positive integer among 1, 2, 4, 8, 12, and 16;

[0025] 1. The establishment process of the data buffer is as follows:

[0026] 1. Format the hard disk and create partitions: first format the hard disk, and then partition according to the size of the disk, at least one partition, and at most four partitions. For example: a 120GB hard disk can be divided ...

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Abstract

The invention relates to a method for realizing real-time CD recording in a digital video recorder, comprising the steps of: (1) the establishing process of a data buffer; (2) the process of writing video data files in the buffer: 21) searching for the initialized buffer files in subsection when a certain branch in a path Q needs to start real-time recording, initializing next buffer file and covering the first buffer file when all the buffer files are used up; 22) writing the video and audio data stream compressed in the branch in the data file found in the step 21) according to file serial number; (23) executing the process of reading the video data in CD when the video time reaches T minute and simultaneously, switching from the path Q to the step 21) for continuing the read-in processof buffer data files; and (3) the process of writing video data files in CD. The invention has the beneficial effects of ensuring the fast availability of recorded CD at the end of the whole process as the data is recorded to the CD in the video process.

Description

technical field [0001] The invention relates to a recording method of a digital hard disk video recorder, in particular to a method for realizing real-time recording of a disc in a digital hard disk video recorder. Background technique [0002] In some special occasions, such as the interrogation occasions of the procuratorate, court and public security organs, the digital hard disk video recorder needs to record the parties and the interrogation scene in real time while recording the hard disk, so as to facilitate image archiving and reproduction of the interrogation process. The traditional method of burning video files to CD is as follows: save all the video files to the hard disk first, and then back them up to the CD after the whole interrogation process is over. for a long time. Contents of the invention [0003] The purpose of the present invention is just to overcome the shortcoming of long recording time of the traditional video file disc, and provide a method fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B31/00G11B20/10
Inventor 吕明成刘彦陈军科
Owner HANGZHOU HIKVISION DIGITAL TECH
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