US5245322A
Expired / Lapsed
US
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Bus architecture for a multimedia system
Assignee: Lenovo PC International Ltd
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Filing: 1990-12-11
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Granted: 1993-09-14
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Expires: 2010-12-11
Abstract
Abstract An information handling apparatus for transferring and composing image signals for display. The apparatus includes a bus adapted to allow selective access for multiple independent image signals generated by respective independent image sources. The selective access enables composition of the independent image signals in response to control information; the composition enables real time display of a composed image signal.
Inventors
- 👤 John M. Dinwiddie, Jr.
- 👤 Bobby J. Freeman
- 👤 Gustavo A. Suarez
- 👤 Bruce J. Wilkie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/36; G06; G06F; G06F3/00; G06F3/14; G09G5/02; G09G5/026; G09G5/14; H; H04; H04N; H04N5/00; H04N5/222; G09G1/00; G09G1/06; G09G1/14; G09G1/16; G09G1/165; G09G1/167; G09G2340/00; G09G2340/12; G09G2340/125
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
144 words
A bus apparatus for transferring and composing image signals for display comprising: a control channel, said control channel being adapted to transmit control information, and a video channel, a plurality of independent image signals, said plurality of image signals being continuously generated by a respective plurality of independent image sources, said image signals being analog image signals, and each independent image signal representing a virtual screen of information, said analog image signals being adapted to selectively access said video channel one at a time, said selective access performed by interface circuits which are directly coupled to said plurality of independent image sources and said video channel, said selective access enabling composition of said independent image signals into a composed image signal representing an image to be displayed in response to the control information, said composition enabling real time display of said composed image signal.
Claim 2
Dependent Claim
144 words
A bus apparatus for transferring and composing image signals for display comprising: a control channel, said control channel being adapted to transmit control information, and a video channel, a plurality of independent image signals, said plurality of image signals being continuously generated by a respective plurality of independent image sources, said image signals being analog image signals, and each independent image signal representing a virtual screen of information, said analog image signals being adapted to selectively access said video channel one at a time, said selective access performed by interface circuits which are directly coupled to said plurality of independent image sources and said video channel, said selective access enabling composition of said independent image signals into a composed image signal representing an image to be displayed in response to the control information, said composition enabling real time display of said composed image signal.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein said composition includes generating said composed image signal on a point by point basis.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1 wherein some of said image signals include analog image signals, and said video channel provides a path for said analog image signals.
Claim 5
Dependent Claim
33 words
The apparatus of claim 3 wherein said analog image signals are differential analog image signals, and said path for said analog image signals is a differential path for said differential analog image signal.
Claim 6
Dependent Claim
29 words
The apparatus of claim 4 wherein each analog image signal includes color characteristic signals, and said path for said analog image signals includes paths for said color characteristic signals.
Claim 7
Dependent Claim
35 words
The apparatus of claim 5 wherein said color characteristic signals include red, green, and blue characteristic signals, and said paths for said color characteristic signals include paths for said red, green and blue characteristic signals.
Claim 8
Dependent Claim
24 words
The apparatus of claim 1 wherein said image signals include respective synchronization information, and said video channel includes a path for said synchronization information.
Claim 9
Dependent Claim
36 words
The apparatus of claim 7 wherein said synchronization information includes vertical synchronization information and horizontal synchronization information, and said path for said synchronization information includes paths for said vertical synchronization information and said horizontal synchronization information.
Claim 10
Dependent Claim
28 words
The apparatus of claim 1 wherein said image signals include respective color key match information, and said video channel includes a path for said color key match information.
Claim 11
Dependent Claim
28 words
The apparatus of claim 1 further comprising a second video channel, and wherein said independent image signals selectively access said second video channel in response to control information.
Claim 12
Dependent Claim
42 words
The apparatus of claim 1 further comprising a digital video channel, and wherein some of said independent image signals are digital image signals, and said digital image signals selectively access said digital video channel of said bus in response to control information.
Claim 13
Dependent Claim
29 words
The apparatus of claim 1 wherein said control information includes switch information, said switch information indicates when to switch from one said image signal to another said image signal.
Claim 14
Dependent Claim
19 words
The apparatus of claim 12 wherein said switch information includes horizontal information and vertical information for each image signal.
Claim 15
Dependent Claim
16 words
The apparatus of claim 12 wherein said control information includes priority information for each image signal.
Claim 16
Dependent Claim
149 words
A multimedia bus for transferring and composing a plurality of analog image signals provided by a respective plurality of independent image sources, the bus allowing the plurality of image signals to be presented by a single display device, the bus comprising: a control channel adapted to transmit control information, and a video channel adapted to transmit analog image signals, the analog image signals being adapted to selectively access said video channel one at a time, said selective access performed by interface circuits which are directly coupled to said plurality of independent image sources and said video channel, each independent image signal representing a virtual screen of information, said selective access enabling composition of said independent image signals into a composed image signal representing an image to be displayed in response to the control information, said composition enabling real time display of a composed image signal by the display device.
Claim 17
Dependent Claim
149 words
A multimedia bus for transferring and composing a plurality of analog image signals provided by a respective plurality of independent image sources, the bus allowing the plurality of image signals to be presented by a single display device, the bus comprising: a control channel adapted to transmit control information, and a video channel adapted to transmit analog image signals, the analog image signals being adapted to selectively access said video channel one at a time, said selective access performed by interface circuits which are directly coupled to said plurality of independent image sources and said video channel, each independent image signal representing a virtual screen of information, said selective access enabling composition of said independent image signals into a composed image signal representing an image to be displayed in response to the control information, said composition enabling real time display of a composed image signal by the display device.
Claim 18
Dependent Claim
20 words
The apparatus of claim 15 wherein said composition includes generating said composed image signal on a point by point basis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |