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

Saturday, December 6th, 2008 at 10:22 | No comments

Categories: Communication Networks

Tags: Irda, Linux, network equipment, PXA255

Short Content: Abstract: Has analyzed the infrared network service standard IrDA hierarchical structure, introduced the Linux network equipment driver in the essence work mechanism, and take the infrared network service which realizes on high-end embedded processor PXA255 as an example, has given the Linux network equipment driver one kind of development pattern and realizes the main point, the infrared network service's application has provided one practical method for in the complex network driver's design and each kind of embedded equipment development.Key word: ...

Tuesday, October 21st, 2008 at 17:45 | No comments

Categories: Communication Networks

Tags: Embedded, IP, PXA255, QT, video frequency telephone

Short Content: The traditional IP telephone is transforms the voice signal the digital signal, carries on the pack and the compression, on-line carries on the transmission in the data. But in recent years, the people already did not satisfy can only hear the pronunciation, but also hoped that can see opposite party image. This system aims at people's this demand, uses QT/Embedded in the Intel PXA255 platform the graph development kit design a IP video frequency telephone system. 1 hardware system ...

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 ...