Television – Two-way video and voice communication – User positioning
Patent
1996-12-17
2000-08-22
Woo, Stella
Television
Two-way video and voice communication
User positioning
348 17, 348 18, H04N 714
Patent
active
061080276
ABSTRACT:
A still image is progressively transmitted over a communications channel by computing, encoding, and outputting for transmission difference information representing the difference between the still image and a lower quality representation of the still image that has been received by a remote location. This process is repeated, with additional difference information being generated to supplement the image received at the remote location, such that the quality of the image at the remote location improves over time. The difference information may be encoded in a format compatible with existing video compression standards and processed by a receiving terminal regardless of the presence of still mode capability.
REFERENCES:
patent: 4941053 (1990-07-01), Hienerwadel et al.
patent: 5113266 (1992-05-01), Sugiura
patent: 5654760 (1997-08-01), Ohtsuki
patent: 5691767 (1997-11-01), Tahara
patent: 5708732 (1998-01-01), Merhav et al.
ITU-T Telecommunication Standardization Sector of ITU, Annex C: RTP payload format for H.261 video streams (Normative), pp. 108-113; Jun. 19, 1996.
JPEG: Still Image Data Compression Standard, Chapter 10: JPEG Coding Models, pp. 169-188 (undated).
T. Ishida et al. "Development of A 64 KBPS Video Codec: Netec Visualink 1000", NEC Research and Development, No. 95, Oct. 1, 1989.
S.R. Ely "MPEG Video. A Simple introduction", EBU Review-Technical No. 266, Dec. 21, 1995.
Andrews Barry D.
Voois Paul A.
Netergy Networks, Inc.
Ramakrishnaiah Melur
Woo Stella
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