1
Tommy C Poon, Jay Bao, Yoshiki Mizutani, Hiroyuki Nakayama: Universal modem for digital video, audio and data communications. Mitsubishi Electric Research Laboratories, Dirk Brinkman, February 20, 2001: US06192070 (212 worldwide citation)

A universal modem has a software-configurable modulator/demodulator which accommodates different modulation formats such as those associated with terrestrial, cable, phone line, satellite and wireless communications to be transmitted and received through a single device in which the modem has reconf ...


2
Tommy C Poon, Jay Bao, Yoshiki Mizutani, Hiroyuki Nakayama: Universal modem for digital video, audio and data communications. Mitsubishi Electric Information Technology Center America, Dirk Brinkman, August 17, 1999: US05940438 (123 worldwide citation)

A universal modem has a software-configurable modulator/demodulator which commodates different modulation formats such as those associated with terrestrial, cable, phone line, satellite and wireless communications to be transmitted and received through a single device in which the modem has reconfig ...


3
Tommy C Poon, Jay Bao, Yoshiki Mizutani, Hiroyuki Nakayama: Generating signals having different modulation formats. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Andrew Curtin, December 30, 2003: US06671328 (62 worldwide citation)

A signal having one of a plurality of modulation formats is formed by encoding first data in accordance with a particular one of the modulation formats. The encoded first data is then combined with second data identifying the particular modulation format of the encoded first data to form the signal.


4
Cheng Youn Lu, Jay Bao, Tommy C Poon: Data receiver having variable rate symbol timing recovery with non-synchronized sampling. Mitsubishi Electric Information Technology Center America, Dirk Brinkman, October 3, 2000: US06128357 (49 worldwide citation)

An adaptable, variable rate symbol timing recovery system for a digital sal receiver comprises an analog to digital (A-D) signal converter having analog signal input and digital data signal output terminals. A source of selectable, substantially fixed rate, data sampling clock signals is coupled to ...


5
Anthony Vetro, Huifang Sun, Peng Yin, Bede Liu, Tommy C Poon: Video transcoder with spatial resolution reduction. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Andrew Curtin, December 30, 2003: US06671322 (33 worldwide citation)

A method transcodes groups of macroblocks of a partially decoded input bitstream. The groups of macroblocks include intra-mode and inter-mode macroblocks. Each macroblock includes DCT coefficients, and at least one motion vector. The modes of each group of macroblocks are mapped to be identical only ...


6
Ajay Divakaran, Huifang Sun, Hiroshi Ito, Tommy C Poon: Methods of scene change detection and fade detection for indexing of video sequences. Mitsubishi Electric Research Laboratories, Dirk Brinkman, September 10, 2002: US06449392 (31 worldwide citation)

This invention relates to methods of abrupt scene change detection and fade detection for indexing of MPEG-2 and MPEG-4 compressed video sequences. Abrupt scene change and fade-detection techniques applied to signals in compressed form have reasonable accuracy and the advantage of high simplicity si ...


7
Tommy C Poon, Huifang Sun, Jay Bao, Anthony Vetro: Digital video decoder and method of decoding a digital video signal. Mitsubishi Electric Information Technology Center America, Dirk Brinkman, November 7, 2000: US06144698 (28 worldwide citation)

A digital video decoder and method therefor receives a digital video signal and performs motion compensation on the digital video signal in the frequency domain. The motion compensation is performed by forming, for each inter-coded picture in the digital video signal, a composite picture in the freq ...


8
Huifang Sun, Jay Bao, Tommy C Poon: Method and apparatus for down-converting a digital signal. Mitsubishi Electric Information Technology Center America, November 10, 1998: US05835151 (27 worldwide citation)

A method and apparatus for down-converting a digital video signal includes a synthesizer and a converter. The synthesizer receives a digital video signal including at least first and second DCT blocks of DCT coefficients, and synthesizes the first and second DCT blocks into a single synthesized DCT ...


9
Huifang Sun, Ajay Divakaran, Hiroshi Ito, Tommy C Poon: Methods of scene fade detection for indexing of video sequences. Mitsubishi Electric Research Laboratories, Dirk Brinkman, December 4, 2001: US06327390 (23 worldwide citation)

A method locates scene changes in a sequence of images or frames that have been compressed without first decompressing the sequence. The sequence includes subsequences of P-frames between I-frames. DC residual coefficients including sign information are extracted from the sub-sequences of P-frames. ...


10
George Fang, Giovanni Vannucci, Jinyun Zhang, Tommy C Poon: Personal identification device for mobile telephone. Mitsubishi Electric Research Labs, Dirk Brinkman, Andrew J Curtin, December 13, 2005: US06975853 (15 worldwide citation)

A personal identification device for use with a mobile telephone in a wireless communications network includes an connector mated to a connector of the mobile telephone normally used for a hands-free kit or a data port. In a typical application, a user of the mobile telephone calls a server. The ser ...