Patent Number: 6,426,772

Title: Video encoder

Abstract: A next input image selector 8 specifies a time at which an input image tobe processed next is to be input immediately after finishing an encodingof one image. An input video capture 1 obtains an image of which inputtime has been specified and sends this image to an input image informationdetector 2. The input image information detector 2 makes a decision as towhether or not the input image is an image to be processed based on animage variance between this input image and an input image processedimmediately before stored in a frame memory 3. If this decision isnegative, an input image re-selector 4 re-selects an image to beprocessed, and if the decision is affirmative, this input image is sent asan image to be processed to a target output bits setter 5 and a motionpredictor 11. An output bits controller 6 determines a quantizing level ofa quantizer 14 from target output bits and actual output bits obtainedfrom an encoder 15. A video encoder capable of encoding images in uniformpicture quality with realtime processing feature can be provided.

Inventors: Yoneyama; Akio (Tokyo, JP), Nakajima; Yasuyuki (Saitama, JP), Yanagihara; Hiromasa (Saitama, JP), Sugano; Masaru (Tokyo, JP)


International Classification: H04N 7/50 (20060101); H04N 7/46 (20060101); H04N 7/26 (20060101); H04N 007/18 ()

Expiration Date: 07/30/2014