Method for controlling and transferring digit compressed viewdata in heterogeneous communication network and its equipment

Application Number: 00100307
Application Date: 2000.01.14
Publication Number: 1263421
Publication Date: 2000.08.16
Priority Information: 1999/2/11 US 09/248462
International: H04N7/24
Applicant(s) Name: Group Video Co., Ltd.
Address:
Inventor(s) Name: James C. Buloelaine;Mark R. Banam;Therwook L. Shang
Patent Agency Code: 72002
Patent Agent: han hong
Abstract A method and apparatus automatically manipulates a digitally compressed video bitstream such that the result is compatible with different bandwidth and error resilience requirements at a receiving point in a heterogeneous communication network. The present method and device include identification of irrelevant and low priority video bits; intentional introduction of packet losses to reduce bitrate while maintaining visual quality; use of replacement tags for irrelevant and low priority components of the bitstream for compatible decoding by a wide array of decoders; and insertion of resynchronization tags and translation of predictively coded video packet bits for the improvement of error resilience.