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Method and system for personal video recording

A technology for video recording and TV programs, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as black screen, users cannot watch on other set-top boxes, etc., to achieve the effect of convenient use and good experience

Inactive Publication Date: 2019-12-10
SHENZHEN JIUZHOU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to provide a personal video recording method and system for the problems that the PVR content burned by the above-mentioned PVR generates a black screen when fast forwarding and rewinding, or causes the user to be unable to watch it on other set-top boxes.

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  • Method and system for personal video recording
  • Method and system for personal video recording

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] figure 1 It is a flow chart of the personal video recording method in an embodiment, such as figure 1 As shown, the method includes the following steps:

[0027] S10: Set a timer and start timing.

[0028] When using the PVR function, a timer is firstly set in this method to control the timing interval and timing time. In this embodiment, the counting value of the timer is not less than 1000 milliseconds.

[0029] S20: Obtain the ECM from the code stream of the TV program, obtain the CW through ECM parsing, and store the ECM in the memory of the set-top box.

[0030] After starting PVR ...

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PUM

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Abstract

The present invention relates to a personal video recording method and system. According to the personal video recording method and system, when recording is performed, a TS packet decryption processing module 300 decrypts a part of TS packets containing I-frame data and stores the decrypted TS packets in a memory, and authority control is performed on the other TS packets through a stored ECM, and therefore, when fast forward and rewind operation is carried out, only the decrypted TS packets are required to be played, so that the I-frame data can be displayed to a user, decryption operation is not required to be carried out, and a black screen problem can be avoided; since a part of the TS packets are decrypted, and the I-frame data are displayed to the user, and therefore, recorded content can be well protected, and the black screen problem in the fast forward and rewind operation can be solved; and the recorded content can be played on other set-top boxes having authority, and therefore, the use of the user can be greatly facilitated, the needs of the user can be satisfied, and great experience can be brought to the user.

Description

technical field [0001] The invention relates to the field of digital television, in particular to a personal video recording method and system. Background technique [0002] The PVR function (Personal video recorder, PVR for short) is a commonly used function on the set-top box at present. The user burns the required TV program content to the hard disk or U disk through the PVR function, and performs PVR content viewing or playback, fast forward and fast rewind and so on. [0003] In order to protect copyright and privacy, PVR content needs to be protected during PVR recording. At present, the PVR content protection scheme is basically to record the ECM (Entitlement Control Information) of TV programs. When playing back and watching, obtain the current authorization status, and if the set-top box still has authorization, release the corresponding CW (control word). However, this protection scheme has unavoidable difficulties when fast forwarding and rewinding PVR content....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4623H04N21/4627H04N21/4385H04N21/433H04N21/41
CPCH04N21/4135H04N21/4334H04N21/43853H04N21/4623H04N21/4627
Inventor 罗晓燕
Owner SHENZHEN JIUZHOU ELECTRIC