Apparatus and method for controlling variable bit rate in...

Details Apparatus and method for controlling variable bit rate in... Apparatus and method for controlling variable bit rate in...

2006-07-18

2006-07-18

Le, Vu (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07079581

ABSTRACT:
An apparatus and method for controlling a variable bit rate in real time are provided, including an encoding unit for performing a predetermined image conversion on present video data to be encoded and for encoding the video data into a variable bit rate by quantizing the conversion result, and a variable bit rate controller for allocating an overall bit estimate of the video data to be stored in a system to each frame according to a variation in video recording time, for detecting the complexity of frames based on a difference between pixels of the encoded video data and for determining a quantization factor using the detected complexity.

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Teixeira et al, “Analysis of a two step MPEG video system”, International Conference on Image Processing, vol. 1, pp. 350-352, Oct. 1997.
Chow et al, “Complexity based rate control for MPEG encoder”, IEEE International Conference Image Processing, vol. 1, pp. 263-267, Nov. 1994.

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