Row grabbing system
First Claim
1. 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 continuously transmittable video information comprising means for transmitting said video information as a plurality of pseudo video scan lines, each of said pseudo video scan lines having a television video scan line format and capable of comprising a complete self-contained packet of digital information sufficient to provide an entire displayable row of video data characters, said pseudo video scan line having an associated transmission time equivalent to said television video scan line, said packet of digital information comprising at least address information for said displayable row and data information for said displayable characters in said displayable row, each of said pseudo video scan lines further comprising a horizontal sync signal at the beginning thereof, said horizontal sync signal providing a record separator between adjacent pseudo video scan lines, said transmitting means further comprising means for providing a vertical sync signal after a predetermined plurality of pseudo video scan lines have been transmitted, said pseudo video scan line being a composite video signal, said system further comprising television signal distribution means for distributing said transmitted composite pseudo video scan line signals to said video display means for providing said continuous video display.[...]..Iadd., and receiver means operatively connected between said television signal distribution means and said video display means for processing said distributed composite pseudo video scan line signals and capable of providing a displayable video row signal to said video display means from a pseudo video scan line signal pertaining to said selected frame for providing said continuous video display, said receiver means comprising means for updating said continuously video displayable selectable frame on a displayable video row-by-row basis as said data portion of any of said displayable received distributed pseudo video scan line signals pertaining to said selected frame is updated. .Iaddend.
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Accused Products
Abstract
A real time frame grabbing system for substantially instantaneously providing a continuous video display or a selectable predetermined video frame of information on a video display means from continuously transmittable video information which is transmitted as a plurality of pseudo video scan lines wherein the selected frame being grabbed is updatable on a displayable row by displayable row basis. Each of the pseudo video scan lines has a television scan line format and comprises a complete self-contained packet of digital information sufficient to provide an entire displayable row of video data characters, the pseudo video scan line having an associated transmission time equivalent to that of a television video scan line. The packet of digital information comprises at least address information for a displayable row and data information for the displayable characters in the row. Each of these psuedo video scan lines further comprises a horizontal sync signal at the beginning thereof which provides a record separator between adjacent pseudo video scan lines and resets the input receiver logic for the transmitted pseudo video scan lines upon the detection of each horizontal sync signal to provide noise immunity enhancement. The pseudo video scan lines are transmitted and received through a conventional television distribution system. Each pseudo video scan line contains means for error checking the contents of the received pseudo video scan line for inhibiting display of the associated displayable row when the error check is not satisfied. Programmable means, such as a general purpose digital computer, is conventionally programmed to interleave the pseudo video scan line signal transmission to provide pseudo video scan line information corresponding to a common assigned row for a plurality of frames before providing such information corresponding to a subsequent different common assigned row for the plurality of frames.
120 Citations
24 Claims
- 1. 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 continuously transmittable video information comprising means for transmitting said video information as a plurality of pseudo video scan lines, each of said pseudo video scan lines having a television video scan line format and capable of comprising a complete self-contained packet of digital information sufficient to provide an entire displayable row of video data characters, said pseudo video scan line having an associated transmission time equivalent to said television video scan line, said packet of digital information comprising at least address information for said displayable row and data information for said displayable characters in said displayable row, each of said pseudo video scan lines further comprising a horizontal sync signal at the beginning thereof, said horizontal sync signal providing a record separator between adjacent pseudo video scan lines, said transmitting means further comprising means for providing a vertical sync signal after a predetermined plurality of pseudo video scan lines have been transmitted, said pseudo video scan line being a composite video signal, said system further comprising television signal distribution means for distributing said transmitted composite pseudo video scan line signals to said video display means for providing said continuous video display.[...]..Iadd., and receiver means operatively connected between said television signal distribution means and said video display means for processing said distributed composite pseudo video scan line signals and capable of providing a displayable video row signal to said video display means from a pseudo video scan line signal pertaining to said selected frame for providing said continuous video display, said receiver means comprising means for updating said continuously video displayable selectable frame on a displayable video row-by-row basis as said data portion of any of said displayable received distributed pseudo video scan line signals pertaining to said selected frame is updated. .Iaddend.
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9. said associated pseudo video scan line signal is inhibited..]. 10. A real time frame grabbing system in accordance with claim .[.9.]. .Iadd.1 .Iaddend.wherein said receiver means further comprises keyboard means for selecting said predetermined video frame to be continuously displayed, said address information comprising information corresponding to the frame associated with said distributed pseudo video scan line, said address information testing means comprising means for testing said frame information, said reception condition being correspondence between said frame information and said selected frame. .[.11. A real time frame grabbing system in accordance with claim 9 wherein a predetermined pseudo video scan line signal contains permission information representative of predetermined frames which a video display means is authorized to receive for video display thereof, said receiver means comprising means for storing said authorized frames, said address information comprising information corresponding to the frame associated with said distributed pseudo video scan line, said address information testing means comprising means for testing said frame information, said reception condition being correspondence between said frame information and stored authorized
- 16. an interval corresponding to said sync burst gate interval. 19. 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 pseudo video scan lines, each of said pseudo video scan lines having a television video scan line format and capable of comprising a complete self-contained packet of digital information sufficient to provide an entire displayable row of video data characters, said pseudo video scan line having an associated transmission time equivalent to said television scan line, said packet of digital information comprising at least address information for said displayable row and data information for said displayable characters in said displayable row, each of said pseudo video scan lines further comprising a horizontal sync signal at the beginning thereof, said horizontal sync signal providing a record separator between adjacent pseudo video scan lines, said pseudo video scan line being a composite video signal, said system comprising means for selecting said predetermined video frame to be continuously displayed and means operatively connected to said video display means and said frame selection means for processing said composite pseudo video scan line signals and capable of providing a displayable video row signal to said video display means from each of said pseudo video scan line signals pertaining to said selected frame for providing said continuous video display, a predetermined plurality of displayable video rows comprising a displayable video frame of information.[...]..Iadd., said processing means comprising means for updating said continuously video displayable selectable frame on a displayable video row-by-row basis as said data portion of any of said displayable received distributed pseudo video scan line signals pertaining
- 19. provide said displayable video row signal therefrom. 22. A real time frame grabbing system in accordance with claim 19 wherein said .[.processing.]. .Iadd.updating .Iaddend.means comprises means for updating said continuously video displayable selectable frame on a displayable video row-by-row basis dependent on the real time data information content of
- 24. Iadd.31. A real time frame grabbing system in accordance with claim 24 wherein said processing means further comprises memory means for retrievably storing said pseudo video scan line data portion for providing said displayable video row therefrom and delay means for delaying the storing of said distributed pseudo video scan line signal data portion for a sufficient interval to enable testing for said error check condition and testing of said address information prior to storing of said pseudo video scan line data portion. .Iaddend.
Specification