US5602580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video communication controller using FM sideband transmission
Assignee: Individual
•
Filing: 1993-09-17
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Granted: 1997-02-11
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Expires: 2013-09-17
Abstract
Abstract A module containing digital compression and decompression circuitry is used in conjunction with a system whereby a video program may be communicated over a telephone line to an RF broadcaster to be received by individuals at remote locations equipped with one of the modules. In the preferred embodiment, the RF transmitter is an FM transmitter, and the video broadcasts are modulated onto a subcarrier, such as an SCA subcarrier. The module has various other inputs and outputs adapted for connection to other video-related devices and/or a personal computer which may be used for control or program production. A configuration is also described whereby multiple modules may be used in conjunction with a conference control module enabling multiple participants to view one another as part of a gathering such as a classroom instruction situation.
Inventors
- 👤 Ling-Yuan Tseng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:00
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/08; G09B5/14; H; H04; H04H; H04H20/00; H04H20/28; H04H20/33; H04H20/34; H04H20/38; H04N; H04N19/00; H04N7/00; H04N7/14; H04N7/15; H04H60/00; H04H60/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
94 words
A video communications system, comprising: radio receiver circuitry operative to recover a digitally compressed video program from an FM sub-carrier signal including programs characterized in having a plurality of sequential frames representative of motion video; decompression circuitry operative to receive said digitally compressed video program and output a decompressed version of said program; means for outputting said decompressed program to a display device for viewing of said program in real time; and an interface in communication with said decompression circuitry, operative to send and receive a digitally compressed video program over a telephone line.
Claim 2
Dependent Claim
94 words
A video communications system, comprising: radio receiver circuitry operative to recover a digitally compressed video program from an FM sub-carrier signal including programs characterized in having a plurality of sequential frames representative of motion video; decompression circuitry operative to receive said digitally compressed video program and output a decompressed version of said program; means for outputting said decompressed program to a display device for viewing of said program in real time; and an interface in communication with said decompression circuitry, operative to send and receive a digitally compressed video program over a telephone line.
Claim 3
Dependent Claim
112 words
A video communications system, comprising: radio receiver circuitry operative to recover a digitally compressed video program from an FM sub-carrier signal, including programs characterized in having a plurality of sequential frames representative of motion video; decompression circuitry operative to receive said digitally compressed video program and output a decompressed version of said program; means for outputting said decompressed program to a display device for viewing of said program in real time; an input to receive a non-compressed video program from an external source; digital data-compression circuitry operative to generate a compressed version of said program; and an output to transmit said externally sourced program in digitally compressed form over a telephone line.
Claim 4
Dependent Claim
112 words
A video communications system, comprising: radio receiver circuitry operative to recover a digitally compressed video program from an FM sub-carrier signal, including programs characterized in having a plurality of sequential frames representative of motion video; decompression circuitry operative to receive said digitally compressed video program and output a decompressed version of said program; means for outputting said decompressed program to a display device for viewing of said program in real time; an input to receive a non-compressed video program from an external source; digital data-compression circuitry operative to generate a compressed version of said program; and an output to transmit said externally sourced program in digitally compressed form over a telephone line.
Claim 5
Dependent Claim
39 words
The video communication system of claim 2, further including a plurality of said inputs and image-integration means whereby programs received through said inputs may be arranged in separate windows of a single frame of said program prior to transmission.
Claim 6
Dependent Claim
174 words
A video communications controller, comprising: an enclosure; a first connector disposed on said enclosure for connection to a source of an outgoing video program; a digital data compressor disposed within said enclosure to receive and digitally compress said outgoing video program; a second connecter disposed on said enclosure for attachment to a telephone line; circuitry connected between said digital data compressor and said second connector whereby said digitally compressed video program may be transmitted over said phone line; an antenna; a radio receiver disposed within said enclosure and connected to the antenna, said receiver being operative to tune an RF broadcast; a digital decompressor disposed within said enclosure to receive and decompress a digitally compressed incoming video program; a digital-to-analog converter disposed within said enclosure to receive said decompressed incoming digital video program and output said program in analog form; and a third connector disposed on said enclosure and connected to the output of said digital-to-analog converter, whereby said incoming video program may be displayed on a video monitor connected to said third connector.
Claim 7
Dependent Claim
174 words
A video communications controller, comprising: an enclosure; a first connector disposed on said enclosure for connection to a source of an outgoing video program; a digital data compressor disposed within said enclosure to receive and digitally compress said outgoing video program; a second connecter disposed on said enclosure for attachment to a telephone line; circuitry connected between said digital data compressor and said second connector whereby said digitally compressed video program may be transmitted over said phone line; an antenna; a radio receiver disposed within said enclosure and connected to the antenna, said receiver being operative to tune an RF broadcast; a digital decompressor disposed within said enclosure to receive and decompress a digitally compressed incoming video program; a digital-to-analog converter disposed within said enclosure to receive said decompressed incoming digital video program and output said program in analog form; and a third connector disposed on said enclosure and connected to the output of said digital-to-analog converter, whereby said incoming video program may be displayed on a video monitor connected to said third connector.
Claim 8
Dependent Claim
56 words
The video communications controller of claim 4, wherein said radio receiver is an FM radio receiver, the communications controller further comprising: an SCA adapter disposed within said enclosure and connected to the FM radio receiver, said SCA adapter being operative to detect and demodulate a digitally compressed incoming video program transmitted on an FM SCA sideband.
Claim 9
Dependent Claim
24 words
The video communications controller of claim 5, further comprising an A-D converter disposed within said enclosure to receive and digitize said outgoing video program.
Claim 10
Dependent Claim
99 words
A video communications controller, comprising: an input to receive a video program; a digital data compressor connected in a video-path with said input to digitally compress said video program; an output connected to receive and deliver said compressed program to a telephone line; a radio receiver operative to tune an RF broadcast containing a digitally compressed incoming video program; a digital decompressor connected to receive and decompress said incoming video program; and a digital-to-analog converter connected to receive said decompressed incoming digital video program and output said program in analog form for real-time display on an attached video monitor.
Claim 11
Dependent Claim
99 words
A video communications controller, comprising: an input to receive a video program; a digital data compressor connected in a video-path with said input to digitally compress said video program; an output connected to receive and deliver said compressed program to a telephone line; a radio receiver operative to tune an RF broadcast containing a digitally compressed incoming video program; a digital decompressor connected to receive and decompress said incoming video program; and a digital-to-analog converter connected to receive said decompressed incoming digital video program and output said program in analog form for real-time display on an attached video monitor.
Claim 12
Dependent Claim
38 words
The video communications controller of claim 7, further comprising: an SCA adapter connected to said radio receiver, said SCA adapter being operative to detect and demodulate a digitally compressed incoming video program transmitted on an FM SCA sideband.
Claim 13
Dependent Claim
20 words
The video communications controller of claim 7, further comprising an analog-to-digital converter to receive and digitize said outgoing video program.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |