DTIC ADA230322: Standardization of Freeze Frame TV pdf

DTIC ADA230322: Standardization of Freeze Frame TV

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Description of the Book:

The purpose of this report is to recommend a protocol and a compression technique to be considered as the standard for freeze frame teleconferencing equipments. The recommendations in Section 4 is based on (a) an analysis of freeze frame teleconferencing equipments presently in use, (b) consideration of previous and presently on-going standardization efforts in related areas by respected technical organizations, and (c) the unique requirements teleconferencing places on freeze frame technology; ie, compression, transmission, resolution, gray scale, storage, and display. Freeze frame technology as used in this report is a technique by means of which images normally requiring a wide band communication circuit for transmission can be transmitted over narrow band circuits. This is accomplished by selecting individual frames or fields from a television signal train for transmission. The concept of motion is, of course, lost, but the information content of a frame is conveyed in its entirety (up to the specifications of the codec).

The trade-off is channel bandwidth versus transmission time. (RH

• Creator/s: Defense Technical Information Center
• Date: 6/1/1990
• Year: 1990
• Book Topics/Themes: DTIC Archive, , DELTA INFORMATION SYSTEMS INC HORSHAM PA, *COMPRESSION, ORGANIZATIONS, TIME, TRANSMITTANCE, BROADBAND, STANDARDIZATION, COMMUNICATION AND RADIO SYSTEMS, TELECOMMUNICATIONS, FRAMES, CIRCUITS, STORAGE, BANDWIDTH, CHANNELS, NARROWBAND, GRAY SCALE, CONFERENCING(COMMUNICATIONS), VIDEO FRAMES, REQUIREMENTS

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