US3875329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frame grabbing system
Assignee: IDR Inc
•
Filing: 1974-01-17
•
Granted: 1975-04-01
•
Expires: 1994-01-17
Abstract
Abstract A real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video display of information and a video display means from a plurality of different continuously transmitted frames of video information. The selected frame which is grabbed in real may be continuously updated in real time. The selected frame is located by counting of the vertical sync pulses, the counter being reset in accordance with detection of a frame sync pulse on a predetermined horizontal scan line of a frame, the interval between these reset pulses being dependent on a predetermined minimum update time and maximum access time for a frame. The updating of a frame is provided in accordance with the detection of another pulse located on a different horizontal scan line and used for the frame sync pulse when the frame contains updated video information. Capture logic is responsive to detection of these signals either indirecely or directly in order to control a local memory which captures the frame for continuous video display thereof until either a new frame is selected or the selected frame is updated, the capture video information changing in either instance.
Inventors
- 👤 Robert H Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:36
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/153; H; H04; H04N; H04N1/00; H04N1/00095; H04N1/00098
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
465 words
A real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video frame of information on a video display means from a plurality of different continuously transmittable frame of video information, each video frame containing associated horizontal and vertical sync signal information said system comprising means for retrievably storing said continuously transmitted frames; means operatively connected to said frame storage means for selectively encoding a predetermined horizontal scan line in a video frame after the vertical sync signal for said frame with a uniquely recognizable signal, said selective encoding means selectively encoding only a portion of said plurality of frames at a predetermined interval between encoded frames, said coding interval being dependent on at least a selected predetermined maximum access time for said video display of an individual selected predetermined video frame; means operatively connected to said frame encoding means and said frame storage means for providing said plurality of frames including said encoded plurality of video frames to said video display means; means operatively connected to said video display means for substantially instantaneously selecting a particular predetermined frame from said plurality of continuously transmitted frames; control means operatively connected between said frame selecting means and said video display means for controlling the provision of said continuously video displayable selected particular frame to said video display means for continuous video display thereof; said frame selection means comprising selectable input means operatively connected to said control means for providing a selection information output associated with said particular frame to said control means, said selection information output comprising a uNique frame address for said particular frame; said control means comprising means operatively connected to receive said vertical sync information associated with said continuously transmitted frames, said vertical sync information comprising vertical sync pulse signals, said vertical sync information receiving means comprising means for sequentially counting said vertical sync pulses associated with said continuously transmitted frames to provide an output each of said outputs representing a unique frame address signal; comparator means operatively connected to said sequential counting means output and said selection information means output for comparing said frame address signal outputs, said comparator means providing an output signal when said selection information means frame address output and said sequential counting means output match; means operatively connected to receive said horizontal sync signal information and detect said uniquely recognizable signal, said detection means being further operatively connected to said counting means for resetting said counting means in response to said detection of said uniquely recognizable signal; and means operatively connected to said comparator means output for real time capturing said selected particular frame in response to said comparator output signal and providing said captured continuously video displayable selected particular frame to said video display means for continuous video display thereof.
Claim 2
Dependent Claim
465 words
A real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video frame of information on a video display means from a plurality of different continuously transmittable frame of video information, each video frame containing associated horizontal and vertical sync signal information said system comprising means for retrievably storing said continuously transmitted frames; means operatively connected to said frame storage means for selectively encoding a predetermined horizontal scan line in a video frame after the vertical sync signal for said frame with a uniquely recognizable signal, said selective encoding means selectively encoding only a portion of said plurality of frames at a predetermined interval between encoded frames, said coding interval being dependent on at least a selected predetermined maximum access time for said video display of an individual selected predetermined video frame; means operatively connected to said frame encoding means and said frame storage means for providing said plurality of frames including said encoded plurality of video frames to said video display means; means operatively connected to said video display means for substantially instantaneously selecting a particular predetermined frame from said plurality of continuously transmitted frames; control means operatively connected between said frame selecting means and said video display means for controlling the provision of said continuously video displayable selected particular frame to said video display means for continuous video display thereof; said frame selection means comprising selectable input means operatively connected to said control means for providing a selection information output associated with said particular frame to said control means, said selection information output comprising a uNique frame address for said particular frame; said control means comprising means operatively connected to receive said vertical sync information associated with said continuously transmitted frames, said vertical sync information comprising vertical sync pulse signals, said vertical sync information receiving means comprising means for sequentially counting said vertical sync pulses associated with said continuously transmitted frames to provide an output each of said outputs representing a unique frame address signal; comparator means operatively connected to said sequential counting means output and said selection information means output for comparing said frame address signal outputs, said comparator means providing an output signal when said selection information means frame address output and said sequential counting means output match; means operatively connected to receive said horizontal sync signal information and detect said uniquely recognizable signal, said detection means being further operatively connected to said counting means for resetting said counting means in response to said detection of said uniquely recognizable signal; and means operatively connected to said comparator means output for real time capturing said selected particular frame in response to said comparator output signal and providing said captured continuously video displayable selected particular frame to said video display means for continuous video display thereof.
Claim 3
Dependent Claim
162 words
A real time frame grabbing system in accordance with claim 1 wherein said horizontal sync signal information comprising horizontal sync pulse signals, and said selective encoding means comprises means operatively connected to said frame storage means for initially receiving said horizontal sync signal information and said vertical sync signal information for sequentially counting said horizontal sync pulses associated with said continuously transmitted frames, signal generation means operatively connected to said sequential counting means for providing said uniquely recognizable signal in response to a predetermined count of said horizontal sync signal sequential counting means said vertical sync signal resetting said counting means gating means operatively connected between said signal generation means output and said frame plurality providing means for receiving said horizontal sync signal information associated with each of said frames and said signal generation means output for providing said uniquely recognizable signal to said predetermined horizontal scan line of said portion of said plurality of frames in accordance with said coding interval.
Claim 4
Dependent Claim
58 words
A real time frame grabbing system in accordance with claim 1 wherein said system further comprises video signal generation means operatively connected between said selective encoding means and said frame storage means for providing said horizontal sync signal, vertical sync signal and video information to said encoding means and said video display means from said frame storage means.
Claim 5
Dependent Claim
161 words
A real time frame grabbing system in accordance with claim 1 wherein said selective encoding means comprises means for encoding a different predetermined horizontal scan line in a video frame after the vertical sync with another uniquely recognizable signal, said selective encoding means selectively encoding said different predetermined horizontal scan line only when said video information associated with a frame is real time updated, said predetermined horizontal scan line coding interval being further dependent on a selected predetermined minimum update time; said horizontal sync signal information detection means further comprising means for detecting said other uniquely recognizable signal and providing an output in response thereto, said other uniquely recognizable detection means output being operatively connected to said frame capture means, said frame capture means capturing said updated video frame information for said selected particular frame in response to said other uniquely Recognizable detection means output for providing said captured updated continuously video displayable selected particular frame to said video display means.
Claim 6
Dependent Claim
162 words
A real time frame grabbing system in accordance with claim 4 wherein said horizontal sync signal information comprising horizontal sync pulse signals, and said selective encoding means comprises means operatively connected to said frame storage means for initially receiving said horizontal sync signal information and said vertical sync signal information for sequentially counting said horizontal sync pulses associated with said continuously transmitted frames, signal generation means operatively connected to said sequential counting means for providing said uniquely recognizable signal in response to a predetermined count of said horizontal sync signal sequential counting means, said vertical sync signal resetting said counting means, gating means operatively connected between said signal generator means output and said frame plurality providing means for receiving said horizontal sync signal information associated with each of said frames and said signal generation means output for providing said uniquely recognizable signal to said predetermined horizontal scan line of said portion of said plurality of frames in accordance with said coding interval.
Claim 7
Dependent Claim
64 words
A real time frame grabbing system in accordance with claim 5 wherein said signal generation means further provides said other uniquely recognizable signal in response to a different predetermined count of said horizontal sync signal sequential counting means, said gating means providing said other uniquely recognizable signal to said other predetermined horizontal scan line of said updated frame in accordance with said coding interval.
Claim 8
Dependent Claim
121 words
A real time frame grabbing system in accordance with claim 1 wherein said frame capture means comprises means operatively connected to said comparator means output for controlling the real time capture of said selected particular frame, and local memory means operatively connected between said frame capture control means and said video display means for real time capturing said selected particular frame and retrievably storing said captured frame for providing said captured continuously video displayable selected particular frame to said video display means for continuous video display thereof, said frame capture control means providing a capture signal to said local memory means in response to said comparator output signal, said local memory means capturing said frame in response to said capture signal.
Claim 9
Dependent Claim
189 words
A real time frame grabbing system in accordance with claim 7 wherein said selective encoding means comprises means for encoding a different predetermined horizontal scan line in a video frame after the vertical sync with another uniquely recognizable signal, said selective encoding means selectively encoding said different predetermined horizontal scan line only when said video information associated with a frame is real time updated, said predetermined horizontal scan line coding interval being further dependent on a selected predetermined minimum update time; said horizontal sync signal information detection means further comprising means for detecting said other uniquely recognizable signal and providing an output in response thereto, said other uniquely recognizable detection means output being operatively connected to said frame capture control means; said frame capture control means providing another capture signal to said local memory means in response to said other uniquely recognizable detection means output, said local memory means capturing said updated video frame information for said selected particular frame and retrievably storing said captured updated frame in response to said other capture signal for providing said updated continuously video displayable selected particular frame to said video display means.
Claim 10
Dependent Claim
162 words
A real time frame grabbing system in accordance with claim 8 wherein said horizontal sync signal information comprising horizontal sync pulse signals, and said selective encoding means comprises means operatively connected to said frame storage means for initially receiving said horizontal sync signal information and said vertical sync signal information for sequentially counting said horizontal sync pulses associated with said continuously transmitted frames, signal generation means operatively connected to said sequential counting means for providing said uniquely recognizable signal in response to a predetermined count of said horizontal sync signal sequential counting means, said vertical sync signal resetting said counting means, gating means operatively connected between said signal generator means output and said frame plurality providing means for receiving said horizontal sync signal information associated with each of said frames and said signal generation means output for providing said uniquely recognizable signal to said predetermined horizontal scan line of said portion of said plurality of frames in accordance with said coding interval.
Claim 11
Dependent Claim
64 words
A real time frame grabbing system in accordance with claim 9 wherein said signal generation means further provides said other uniquely recognizable signal in response to a different predetermined count of said horizontal sync signal sequential counting means, said gating means providing said other uniquely recognizable signal to said other predetermined horizontal scan line of said updated frame in accordance with said coding interval.
Claim 12
Dependent Claim
52 words
A real time frame grabbing system in accordance with claim 1 wherein said control means further comprises means for retrievably storing said selection information at least until said selection information is changed, said selection information storage means output being operatively connected to said comparator means for providing said frame address output thereto.
Claim 13
Dependent Claim
169 words
A real time frame grabbing system in accordance with claim 11 wherein said frame selection input means comprises means for providing control information and frame address information associated with said particular frame to said control means, said frame address information being provided to said selection information storage means, said control means further comprising selected frame address storage means operatively connected between said comparator means and said selection information storage means, and condition responsive means operatively connected between said selected frame address storage means and said selection input means for providing a load output signal to said selected frame address storage means in response to a unique control information signal from said selection input means, said selected frame address storage means loading the frame address information thereinto from said selection information storage means in response to said load output signal and retrievably storing said loaded frame address information at least until said selection information is changed, said loaded frame address information comprising said frame address output to said comparator means.
Claim 14
Dependent Claim
84 words
A real time frame grabbing system in accordance with claim 12 wherein said selected frame address storage means is a storage register means and said condition responsive means further provides an increment signal to said selected frame address storage register means in response to a different unique information signal from said selection input means, said selected frame address storage register incrementing to retrievably store a different frame address in response to said increment signal, said different frame address being provided to said comparator means.
Claim 15
Dependent Claim
86 words
A real time frame grabbing system in accordance with claim 12 wherein said selected frame address storage means is a storage register means and said condition responsive means further provides a decrement signal to said selected frame address storage register means in response to another different unique control information signal from said selection input meaNs, said selected frame address storage register decrementing to retrievably store another different frame address in response to said decrement signal said other different frame address being provided to said comparator means.
Claim 16
Dependent Claim
27 words
A real time frame grabbing system in accordance with claim 12 wherein said selection information storage means and said selected frame address storage means are decimal counters.
Claim 17
Dependent Claim
92 words
A real time frame grabbing system in accordance with claim 12 wherein said selection information storage means is a shift register means and said slected frame address storage means is a storage register means, said selection input means being a digital keyboard input means for providing said frame address information to said shift register means one digit at a time, said shift register means segregating said frame address input into at least a least significant digit and a most significant digit, said digits being loaded in parallel into said storage register means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |