51 Research and Design, Electronic Engineers website - Embedded Systems, MCU, DSP, EDA, Test and Measurement, Components, Communications, Power, Microelectronics, Semiconductors

Saturday, November 8th, 2008 at 18:09 | No comments

Categories: DSP

Tags: DSP, Embedded system, image gathering, imagery processing

Short Content: The abstract uses TI Corporation's TMS320C6713, through address decoding and main line isolation, directly the digital image sensor chip OV7620 turning on; Using EDMA independent transmission characteristic, in does not increase the DSP software overhead and in the situation which takes to the main line, realizes video image real-time gathering and processing. After the confirmation, the system has timeliness to be good, the cost is low, development cycle short characteristic. Saved through the main line isolation and the data lock ...

Monday, October 20th, 2008 at 06:12 | No comments

Categories: Communication Networks

Tags: H.263, image gathering, PXA255, video frequency codes, Xscale the

Short Content: The abstract main introduction in builds the video communication prototype system's concrete method based on the xscale processor (PXA255) embedded development platform. The overall system altogether divides into gathering, the demonstration. The code, the decoding, the transmission, receive 6 functional modules, introduced emphatically the video frequency arranges the decoding part on embedded system optimized method. The experimental result indicated that in based on xscale(PXA255) processor's embedded system platform, this video communication prototype system may satisfy the real-time video communication basically ...

Sunday, August 24th, 2008 at 13:56 | No comments

Categories: DSP

Tags: algorithm, crestline, DSP, fingerprint recognition, image gathering

Short Content: 1 introduction 　　The fingerprint recognition technology through the analysis fingerprint's partial characteristic, extracts the exhaustive characteristic point, thus confirms individual status reliably. The fingerprint recognition's merit is the fingerprint takes the human body unique characteristic, its order of complexity may provide the enough characteristic which uses in distinguishing, has the extremely high security. Is opposite in other status authentication technology, the fingerprint recognition is one more ideal status authentication technology, the fingerprint recognition not only has many original information security ...

Monday, August 4th, 2008 at 21:33 | No comments

Categories: DSP

Tags: demonstration, DSP, image gathering, iris recognition system, TMS320DM642

Short Content: 1 introduction         In the informationization modern society, the information security question receives people's attention day by day highly. Status distinction methods and so on traditional password, smart card, because it easy to forget or easy to pretend and so on shortcomings not to meet modern society's demand. In recent years emerged the biological features recognition technology had the very good reliability. The iris takes the important status distinction characteristic, has uniqueness, the stability, to be possible gathering and merits ...