Browse Prior Art Database

TV Fiber-Optic Crosspoint Controller and Network Configuration

IP.com Disclosure Number: IPCOM000037356D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Krembs, GM: AUTHOR

Abstract

It is the purpose of this invention to achieve a network image distribution system that permits the transmission of a live or recorded synthesized television picture frame sequence (TV) in continuous, real- time motion with a topology identical to that of main frame interactive (MFI) data application programs. This concept shall be called MFI TV application programs or MFITV.

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TV Fiber-Optic Crosspoint Controller and Network Configuration

It is the purpose of this invention to achieve a network image distribution system that permits the transmission of a live or recorded synthesized television picture frame sequence (TV) in continuous, real- time motion with a topology identical to that of main frame interactive (MFI) data application programs. This concept shall be called MFI TV application programs or MFITV.

MFITV requires that controlled video/audio distribution be from a centralized signal source to a star A/V controller and to the TV work station. The distance between signal source and A/V controller shall be 1000 up to 2000 feet of coax cable, typically without amplifiers inserted therein, and from A/V controller to TV workstation by up to 5000 feet of fiber-optics cable with intermediate repeater amplifiers. The existing coax data system shall control the switch selection of individual TV distribution channels, i.e., if source control is permitted, the end user can call up, stop, reverse, and, in general, control the centralized TV sources from the workstation more than one TV work station to view the same signal source and the linkage between the controller and MF video signal sources allows several controllers to access the same video signal source. See the figure.

The fiber-optic link between A/V controller and TV workstation allows good S/N ratio over bandwidth typical of NTSC/PAL/SECAM standards with audio inserted as a sub...