US5430494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Independent horizontal panning for side-by-side pictures
Assignee: Technicolor USA Inc
•
Filing: 1993-12-21
•
Granted: 1995-07-04
•
Expires: 2013-12-21
Abstract
Abstract A video display system comprises: a video display; first and second signal processors for cropping first and second video signals representative of first and second pictures; a circuit for generating a side-by-side display format of the pictures on the video display; and, a panning control circuit, responsive to panning command signals, for positioning said pictures in the side-by-side display format and for independently panning the pictures, as positioned. The panning control circuit generates independent fixed and variable delays for controlling line memories in the signal processors. Fixed delays control picture positions and variable delays control panning.
Inventors
- 👤 Timothy W. Saeger
- 👤 Nathaniel H. Ersoz
- 👤 Donald H. Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:42
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0117; H04N7/0122; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/223
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
101 words
A video display system, comprising: video display means; first signal processing means for cropping a first video signal representative of a first picture; second signal processing means for cropping a second video signal representative of a second picture; means coupled to said first and second signal processing means for generating a side-by-side display of respective uncropped portions of said first and second pictures on said video display means; and, panning control means, responsive to panning command signals, for independently controlling said first and second signal processing means to select which portions of said first and second pictures form said side-by-side display.
Claim 2
Dependent Claim
101 words
A video display system, comprising: video display means; first signal processing means for cropping a first video signal representative of a first picture; second signal processing means for cropping a second video signal representative of a second picture; means coupled to said first and second signal processing means for generating a side-by-side display of respective uncropped portions of said first and second pictures on said video display means; and, panning control means, responsive to panning command signals, for independently controlling said first and second signal processing means to select which portions of said first and second pictures form said side-by-side display.
Claim 3
Dependent Claim
30 words
The system of claim 1, wherein said first and second signal processing means comprises first and second asynchronous line memories, respectively, for cropping said first and second video signals, respectively.
Claim 4
Dependent Claim
13 words
The system of claim 2, wherein said line memories are first-in-first-out (FIFO) devices.
Claim 5
Dependent Claim
113 words
The system of claim 1, wherein said second signal processing means comprises a memory having write and read ports, said second video signal being: written into said memory responsive to said panning control means in accordance with a variable panning delay from onset of each horizontal line period of said second video signal, said second picture being panned by controlling said variable panning delay and selecting said uncropped portion for said display; and, read from said memory with a fixed delay from onset of each horizontal line period of said first video signal, which locates said second picture on one side of said side-by-side display independently of said panning of said second picture.
Claim 6
Dependent Claim
18 words
The system of claim 4, wherein said memory is a line memory having asynchronous write and read ports.
Claim 7
Dependent Claim
211 words
The system of claim 1, comprising: a first memory in said first signal processing means having write and read ports and responsive to said panning control means, said first video signal being: written into said first memory in accordance with a first variable panning delay from onset of each horizontal line period of said first video signal; and, read from said first memory with a first fixed delay from said onset of each horizontal line period of said first video signal, which locates said first picture on a first lateral side of said side-by-side display independently of said first variable panning delay; and, a second memory in said second signal processing means having write and read ports and responsive to said panning control means, said second video signal being: written into said second memory in accordance with a second variable panning delay from onset of each horizontal line period of said second video signal, independently of said first variable panning delay; and, read from said second memory with a second fixed delay from said onset of each horizontal line period of said first video signal, different from said first fixed delay, which locates said second picture on a second side of said side-by-side display independently of said second variable panning delay.
Claim 8
Dependent Claim
14 words
The system of claim 6, wherein said first and second memories are line memories.
Claim 9
Dependent Claim
17 words
The system of claim 6, wherein said first and second memories are first-in-first-out (FIFO) line memory devices.
Claim 10
Dependent Claim
15 words
The system of claim 1, wherein said display means has a wide format display ratio.
Claim 11
Dependent Claim
15 words
The system of claim 3, wherein said display means has a wide format display ratio.
Claim 12
Dependent Claim
15 words
The system of claim 6, wherein said display means has a wide format display ratio.
Claim 13
Dependent Claim
17 words
The system of claim 1, comprising means for generating said panning command signals responsive to user input.
Claim 14
Dependent Claim
155 words
A video display system, comprising: video display means; first memory means for cropping a first video signal representative of a first picture; second memory means for cropping a second video signal representative of a second picture; means coupled to said first and second memory means for generating a side-by-side display format of respective uncropped portions of said first and second pictures on said video display means; and, panning means for independently controlling said first and second memory means, said panning means generating a first variable delay, a first fixed variable delay and a second fixed delay, all relative to horizontal synchronizing signals of said first video signal, and generating a second variable delay relative to horizontal synchronizing signals of said second video signal, said first and second pictures being thereby positioned said side-by-side display format responsive to said first and second fixed delays and being independently pannable responsive to said first and second variable delays.
Claim 15
Dependent Claim
155 words
A video display system, comprising: video display means; first memory means for cropping a first video signal representative of a first picture; second memory means for cropping a second video signal representative of a second picture; means coupled to said first and second memory means for generating a side-by-side display format of respective uncropped portions of said first and second pictures on said video display means; and, panning means for independently controlling said first and second memory means, said panning means generating a first variable delay, a first fixed variable delay and a second fixed delay, all relative to horizontal synchronizing signals of said first video signal, and generating a second variable delay relative to horizontal synchronizing signals of said second video signal, said first and second pictures being thereby positioned said side-by-side display format responsive to said first and second fixed delays and being independently pannable responsive to said first and second variable delays.
Claim 16
Dependent Claim
41 words
The system of claim 13, wherein said first and second memory means are enabled for writing in accordance with said first and second variable delays respectively and are enabled for reading in accordance with the first and second fixed delays respectively.
Claim 17
Dependent Claim
15 words
The system of claim 13, wherein each of said memory means comprises asynchronous line memory.
Claim 18
Dependent Claim
23 words
The system of claim 13, wherein each of said memory means comprises a first-in-first-out (FIFO) line memory having asynchronous write and read ports.
Claim 19
Dependent Claim
112 words
A video display system, comprising: video display means; first signal processing means for cropping a first video signal representative of a first picture; second signal processing means for cropping a second video signal representative of a second picture; means coupled to said first and second signal processing means for generating an adjacent display of respective uncropped portions of said first and second pictures on said video display means, said displayed respective portions being substantially comparable in size and shape; and, panning control means, responsive to panning command signals, for independently controlling said first and second signal processing means to select which portions of said first and second pictures form said adjacent display.
Claim 20
Dependent Claim
112 words
A video display system, comprising: video display means; first signal processing means for cropping a first video signal representative of a first picture; second signal processing means for cropping a second video signal representative of a second picture; means coupled to said first and second signal processing means for generating an adjacent display of respective uncropped portions of said first and second pictures on said video display means, said displayed respective portions being substantially comparable in size and shape; and, panning control means, responsive to panning command signals, for independently controlling said first and second signal processing means to select which portions of said first and second pictures form said adjacent display.
Claim 21
Dependent Claim
86 words
The system of claim 17, wherein said panning control means comprises means for generating a first variable delay, a first fixed delay and a second fixed delay, all relative to horizontal synchronizing signals of said first video signal, and generating a second variable delay relative to horizontal synchronizing signals of said second video signal, said first and second pictures being thereby positioned for said adjacent display responsive to said first and second fixed delays and being independently pannable responsive to said first and second variable delays.
Claim 22
Dependent Claim
45 words
The system of claim 18, wherein each of said first and second signal processing means comprises a memory, said first and second variable delays being utilized for writing into said memories and said first and second fixed delays being used for reading from said memories.
Claim 23
Dependent Claim
16 words
The system of claim 17, wherein said video display means has a wide format display ratio.
References Cited (Backward Citations)
US4134128A
Cited
US4163249A
Cited
US4302776A
Cited
US4623922A
Cited
JPS61194981A
Cited
US4893123A
Cited
US4768093A
Cited
JPS6348977A
Cited
US5045994A
Cited
US4743970A
Cited
US5065346A
Cited
US4839728A
Cited
US4853779A
Cited
US4985766A
Cited
US4831447A
Cited
US4891702A
Cited
GB2217549A
Cited
US4998171A
Cited
US5016106A
Cited
US5084765A
Cited
US5153728A
Cited
US5047857A
Cited
US5091785A
Cited
US4992874A
Cited
US5142368A
Cited
US5138455A
Cited
WO1991019395A1
Cited
WO1991019386A1
Cited
WO1991019378A1
Cited
WO1991019387A1
Cited
WO1991019384A1
Cited
WO1991019397A1
Cited
WO1991019394A1
Cited
US5311309A
Cited
US5313303A
Cited
US5329369A
Cited
EP0514819A2
Cited
US5287188A
Cited
DE4300043A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-03 | 1999-01-02 | 1999-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-03 | 2003-01-02 | 2003-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-03 | 2007-01-02 | 2007-07-04 | $7700.00 | Window Closed / Lapsed |