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Recording and reproduction appliance and its method

A kind of equipment and playback technology, applied in the direction of TV, color TV parts, TV system parts, etc., can solve the problem of impossible reproduction

Inactive Publication Date: 2003-07-23
THOMSON CONSUMER ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, reproduction at speeds other than normal playback speed would not be possible in consumer digital recorders that do not process MPEG streams to redistribute I-frame data or form trick-play data for redundant recording

Method used

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  • Recording and reproduction appliance and its method
  • Recording and reproduction appliance and its method
  • Recording and reproduction appliance and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] A simplified consumer digital audio video system is shown in FIG. 1 . A receiver IRD 100 is shown coupled to a receive antenna 50, however, the RF modulated signal may be supplied from a cable distribution network (not shown). The modulated packet signal is tuned, demodulated and subjected to user-defined program separation in the receiver packet selector block denoted RCV.PKT.SEL.55. The output of receiver packet selector 55 includes the transport packet stream of audio video and control data MPEG decoded by DECODER 117 . The MPEG decoder works in conjunction with a memory MEM 116 which stores frames representing the last I-frame. In the event of MPEG stream loss or MPEG syntax corruption, decoder 117 and memory 116 are controlled by controller 115 to support output signal generation by repeating the previous frame from memory 116 . Consequently, the last frame is repeated, resulting in a frozen or still frame image during data output, due to data stream loss or dist...

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PUM

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Abstract

A record and replay apparatus (200) comprises a transducing means (251) for reproducing a digital signal (221) from a medium (249). A control means (205) controls a reproduction mode of the apparatus. A decoding means (117) is coupled to the transducing means (251) for decoding the digital signal (221) and deriving therefrom a signal (IF) indicative of a specific picture type. The reproduction mode has a first period of reproduction at a normal play speed and a second period of reproduction at a speed greater than the play speed. The first and second periods alternating with the first period initiated responsive to the signal (IF) indicative of a specific picture type. In a further arrangement a first transducing means (251) records an MPEG signal. A control means (205) generates a signal (A), indicating an intra coded frame occurrence in the MPEG bit stream, which is recorded by a second transducing means (252) together with a servo reference signal.

Description

technical field [0001] The invention relates to the field of digital video recording, and in particular to reproduction at abnormal speeds. Background technique [0002] Digital video signals may be processed to form a bit stream with a reduced bit rate. This process of reducing the bit rate can be implemented in accordance with the MPEG compression method, and can be implemented by means such as those used in digital satellite systems (e.g. DSS TM or proposed structures in the Grand Alliance (Grand Alliance) or GA Earth Systems). [0003] A consumer video recorder may be in a form suitable for processing analog signals and for compatibility with e.g. MPEG standards and have e.g. GA or DSS TM The digitally encoded signal in the signal format provides recording capability. A consumer video camera of this type can be thought of as two electronic systems in one box, sharing a recording device, servo and control system. Conventional analog recording methods can be employed w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/92H04N5/78H04N5/783H04N9/804H04N19/00H04N19/102H04N19/134H04N19/159H04N19/169H04N19/196H04N19/44H04N19/46H04N19/65H04N19/70H04N19/89H04N19/895
CPCH04N5/783H04N9/8042H04N5/78
Inventor H·布拉特K·F·霍尔兰德M·J·麦拉内
Owner THOMSON CONSUMER ELECTRONICS INC