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Automatic video recording method

A video and automatic technology, applied in the field of digital video technology, can solve the problems of wasting storage space, interrupting normal programs, recording incomplete useful programs, etc., and achieve the effect of enhancing the humanization of products

Inactive Publication Date: 2007-11-07
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] TV programs are often interspersed with a lot of advertisements, which often interrupt the viewing of normal programs. However, the current video recorders often can only record automatically according to the pre-set start time and end time. There are great limitations in recording programs:
[0003] 1. The broadcast time of the program fluctuates greatly, and a large amount of storage space will be wasted for recording useless programs, or the recording of useful programs is incomplete
[0004] 2. There are too many advertisements, and the playback will be repeatedly interrupted by useless advertisements, etc., which is inconvenient for users to watch, destroys the continuity of normal programs, and wastes storage space

Method used

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Embodiment

[0025] In order to use the calculation of the original encoding / decoding module, so as not to increase the amount of additional calculations, the DC component coefficients of some I frames in the MPEG encoding / decoding process after the discrete cosine transform are directly used as the program stream features The sampling source for the value.

[0026] During intra-frame compression, discrete cosine transform and quantization are basically performed after block (such as 8×8), and the first data (representing the DC component) of each 8×8 matrix after discrete cosine transform and quantization is directly applied. As the eigenvalue sequence of the I frame, other detailed data are ignored; that is, by filtering out the high-frequency component, removing the error caused by the small interference, a relatively consistent feature picture is obtained, and the remaining low-frequency component signal is compressed. Get a shorter string of sampled values. The feature value sequence...

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Abstract

A method of making video-recording automatically includes inputting program stream to CPU through coding / decoding module, picking up character value of program stream by CPU, comparing picked up character value of program stream with classification character value stored in databank by CPU, controlling and executing relevant video-recording action if it is judged by CPU that program stream character value is the same as classification character value.

Description

technical field [0001] The invention relates to a digital video recording technology, and at the same time relates to a digital video compression technology. Background technique [0002] TV programs are often interspersed with a lot of advertisements, which often interrupt the viewing of normal programs. However, the current video recorders often can only record automatically according to the pre-set start time and end time. There are great limitations in recording programs: [0003] 1. The program broadcasting time fluctuates greatly, and a large amount of storage space will be wasted for recording useless programs, or the recording of useful programs is incomplete. [0004] 2. If there are too many advertisements, the playback will be repeatedly interrupted by useless advertisement segments, etc., making it inconvenient for users to watch, and destroying the continuity of normal programs and wasting storage space. [0005] At present, digital video recording is to contro...

Claims

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Application Information

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IPC IPC(8): H04N5/76H04N5/761H04N7/24
Inventor 龙强
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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