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Statistical multiplexer for recording video
| Details |
Inventors: Yang, Chao-Kung;
Assignee: Hughes Electronics Corporation (El Segundo, CA)
Primary Examiner: Britton; Howard
Assistant Examiner:
Attorney, Agent or Firm: Crook; John A., Sales; Michael W.
A statistical multiplexing apparatus for permanently recording a plurality of video signals on a video generator so that video programs represented by the video signals can be repeatedly broadcast is provided with a video analyzer for analyzing a first video signal and a second video signal and generating a first compression signal and a second compression signal, a first video encoder for encoding the first video signal at a variable rate determined by the first compression signal to form a first encoded video signal, a second video encoder for encoding the second video signal at a variable rate determined by the second compression signal to form a second encoded video signal, and a video generator for permanently recording the first and second encoded video signals so that the first and second encoded video signals can be repeatedly broadcast from the video generator. |
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DETAILED DESCRIPTION The invention is directed to a statistical multiplexing apparatus for permanently recording a plurality of video signals on a video generator, such as a video server, so that video programs represented by the video signals can be repeatedly broadcast.
The apparatus includes a video analyzer for analyzing first and second video signals and generating first and second compression signals, a first video encoder for encoding the first video signal at a variable rate determined by the first compression signal to form a first encoded video signal, a second video encoder for encoding the second video signal at a variable rate determined by the second compression signal to form a second encoded video signal, and a video generator for permanently recording the first and second encoded video signals so that the first and second encoded video signals can be repeatedly broadcast from the video generator.
The first and second encoded video signals may correspond to movies, and the video generator may comprise means for broadcasting the first and second encoded video signals a plurality of times in a day or month at predetermined times.
The video analyzer may have first and second complexity detectors for generating first and second complexity signals that are representative of the complexity of the first and second video signals, respectively, first and second frame processors for generating first and second frame signals representing the types of video frames of the first and second video signals, respectively, and means for generating the first and second compression signals based upon the first and second complexity signals and the first and second frame signals.
The invention is also directed to a method of permanently recording a plurality of video signals for repeat broadcasting.
The method includes the steps of analyzing a first video signal and a second video signal and generating a first compression signal and a second compression signal, encoding the first and second video signals at variable rates determined by the first and second compression signals to form first and second encoded video signals, permanently recording the first and second encoded video signals on a video generator, and broadcasting the first and second encoded video signals repeatedly from the video generator
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Television 
