US3851096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surveillance system
Assignee: Texas Instruments Inc
•
Filing: 1972-11-03
•
Granted: 1974-11-26
•
Expires: 1992-11-03
Abstract
Abstract A charge transfer device moving target indicator system is disclosed. The system includes a photosensitive imager and an analog delay line for storing one frame of video information generated by the imager. Signal processing circuitry compares corresponding elements of the imager and delay line to detect variations between successive frames of video information.
Inventors
- 👤 D Collins
- 👤 J Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:39
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/194; G01; G01S; G01S11/00; G01S11/12; H; H04; H04N; H04N25/00; H04N25/70; H04N25/703; H04N25/707; H04N25/71; H04N25/72
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
284 words
In a system for detecting a change in the status of signals corresponding to a preselected monitored target, the combination comprising: a. a plurality of first charge transfer device shift registers each comprising a plurality of optical resolution elements, said first plurality of shift registers together defining an array of resolution elements, each said resolution element effective to generate a signal corresponding to a target image area incident thereon during an integration period; b. high impedance tap means for providing from said first shift registers a non-destructive readout of said signals corresponding to said target image in a preselected sequence; c. charge transfer device shift register storage means for receiving said signals from said first shift register devices; d. said first shift registers including means for receiving clock pulses for reading out signals from said first shift registers for application to said high impedance tap means and for inputting to said shift register storage means; e. said shift register storage means including means for receiving clock pulses for synchronous inputting of signals from the first shift register means and reading out of signals from said shift register storage means, signals from said first shift register means corresponding to target-related signals generated by said resolution elements during a first integration period, and signals from said shift register storage means corresponding to target-related signals generated by said resolution elements during a second integration period previous to said first integration period; and f. signal processing means for simultaneously receiving said signals from said high impedance tap means and from said shift register storage means for providing comparison output signals on a resolution element by resolution element basis between target-related signals during said first and second integration periods.
Claim 2
Dependent Claim
284 words
In a system for detecting a change in the status of signals corresponding to a preselected monitored target, the combination comprising: a. a plurality of first charge transfer device shift registers each comprising a plurality of optical resolution elements, said first plurality of shift registers together defining an array of resolution elements, each said resolution element effective to generate a signal corresponding to a target image area incident thereon during an integration period; b. high impedance tap means for providing from said first shift registers a non-destructive readout of said signals corresponding to said target image in a preselected sequence; c. charge transfer device shift register storage means for receiving said signals from said first shift register devices; d. said first shift registers including means for receiving clock pulses for reading out signals from said first shift registers for application to said high impedance tap means and for inputting to said shift register storage means; e. said shift register storage means including means for receiving clock pulses for synchronous inputting of signals from the first shift register means and reading out of signals from said shift register storage means, signals from said first shift register means corresponding to target-related signals generated by said resolution elements during a first integration period, and signals from said shift register storage means corresponding to target-related signals generated by said resolution elements during a second integration period previous to said first integration period; and f. signal processing means for simultaneously receiving said signals from said high impedance tap means and from said shift register storage means for providing comparison output signals on a resolution element by resolution element basis between target-related signals during said first and second integration periods.
Claim 3
Dependent Claim
51 words
A system as set forth in claim 1, including charge transfer device shift register buffer storage means responsive to said signal processing means for providing a video compatible signal corresponding to said target image whenever a difference between said target-related signals generated during said first and second integration periods is detected.
Claim 4
Dependent Claim
42 words
A system as set forth in claim 1 including transmission means responsive to said signal processing means for transmitting only those said target-related signals generated during said first integration period which differ from corresponding target-related signals generated during said second integration period.
Claim 5
Dependent Claim
41 words
A system as set forth in claim 1 wherein said first plurality of charge transfer device shift registers comprises optically active charge-coupled shift registers and said charge transfer device shift register storage means comprises optically inactive charge coupled device shift registers.
Claim 6
Dependent Claim
26 words
A system as set forth in claim 4 wherein said charge transfer device shift register storage means comprises a serial-parallel-serial configuration of charge-coupled device shift registers.
Claim 7
Dependent Claim
207 words
A delta modulation data transmission system comprising: a. optical detector means comprising a plurality of charge transfer device shift registers each comprising a plurality of bits defining a plurality of optical resolution elements for generating a frame of video information comprising respective lines of analog signals during exposure of said array to a target image; b. first signal readout means for providing a non-destructive readout signal from said detector means on a line-by-line basis; c. charge transfer device shift register storage means connected to receive lines of analog signals from said optical detector shift registers and to store a plurality of said lines corresponding to one frame of video information detected by said optical detector means during an integration period; d. second signal read-out means for providing a non-destructive readout signal from said storage shift register means on a line-by-line basis of a frame of video information detected by said optical detector means during a preceding integration period; and e. comparator means for comparing the said readout signals from said first and second signal read-out means to provide output signals for transmission only when a difference in said detected signals is indicated, thereby providing a data transmission system wherein only difference data is required to be transmitted.
Claim 8
Dependent Claim
207 words
A delta modulation data transmission system comprising: a. optical detector means comprising a plurality of charge transfer device shift registers each comprising a plurality of bits defining a plurality of optical resolution elements for generating a frame of video information comprising respective lines of analog signals during exposure of said array to a target image; b. first signal readout means for providing a non-destructive readout signal from said detector means on a line-by-line basis; c. charge transfer device shift register storage means connected to receive lines of analog signals from said optical detector shift registers and to store a plurality of said lines corresponding to one frame of video information detected by said optical detector means during an integration period; d. second signal read-out means for providing a non-destructive readout signal from said storage shift register means on a line-by-line basis of a frame of video information detected by said optical detector means during a preceding integration period; and e. comparator means for comparing the said readout signals from said first and second signal read-out means to provide output signals for transmission only when a difference in said detected signals is indicated, thereby providing a data transmission system wherein only difference data is required to be transmitted.
Claim 9
Dependent Claim
26 words
A data transmission system as set forth in claim 6 wherein said optical detector means comprises an array of optically active charge coupled shift register devices.
Claim 10
Dependent Claim
27 words
A data transmission system as set forth in claim 7, wherein said charge transfer device shift register storage means comprises a serial-parallel-serial charge-coupled device analog delay line.
Claim 11
Dependent Claim
205 words
A moving target indicator comprising in combination: a. an optically active charge transfer device array defining a plurality of resolution elements for generating data during a first exposure to a target; b. first read-out means for providing a non-destructive readout of data from said optically active charge transfer device array; c. optically inactive charge transfer device analog delay line means having input means for receiving in shift register fashion said data corresponding to said first exposure and output means for shift register readout of said data; d. said array and said delay line means including transfer electrodes for receiving clocking signals to control transfer of data generated by said resolution elements to corresponding storage elements in said delay line; e. second readout means for providing a non-destructive readout of data from said delay line means; f. comparator means for receiving data from said second readout means corresponding to data generated during said first exposure, and for simultaneously receiving data from said first readout means corresponding to data generated during a second exposure of said target subsequent to said first exposure, thereby providing an output signal on a resolution element by resolution element basis corresponding to changes in said target between said first and second exposures.
Claim 12
Dependent Claim
205 words
A moving target indicator comprising in combination: a. an optically active charge transfer device array defining a plurality of resolution elements for generating data during a first exposure to a target; b. first read-out means for providing a non-destructive readout of data from said optically active charge transfer device array; c. optically inactive charge transfer device analog delay line means having input means for receiving in shift register fashion said data corresponding to said first exposure and output means for shift register readout of said data; d. said array and said delay line means including transfer electrodes for receiving clocking signals to control transfer of data generated by said resolution elements to corresponding storage elements in said delay line; e. second readout means for providing a non-destructive readout of data from said delay line means; f. comparator means for receiving data from said second readout means corresponding to data generated during said first exposure, and for simultaneously receiving data from said first readout means corresponding to data generated during a second exposure of said target subsequent to said first exposure, thereby providing an output signal on a resolution element by resolution element basis corresponding to changes in said target between said first and second exposures.
Claim 13
Dependent Claim
35 words
A moving target indicator as set forth in claim 9, wherein said array comprises an array of charge-coupled shift register devices and said analog delay line comprises a serial-parallel-serial configuration of charge-coupled device shift registers.
Claim 14
Dependent Claim
46 words
A moving target indicator as set forth in claim 9 including charge transfer device buffer storage means operably responsive to output signals from said comparator means to receive signals from said detector array for providing visual display format signals of said target to a monitoring station.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |