TELEVISION METER OF COORDINATES Russian patent published in 1994 - IPC

FIELD: TV equipment. SUBSTANCE: device has photoelectric transducer 1, video amplifier 2, digital-to-analog converter 3, synchronization pulse oscillator 4, sweep generator 5, record pulse generator 8, lock pulse generator 9, counter 10 and measuring channels 7 and 11 for X and Y axis. Each channel has digital integrator 6, adders 12 and 18, shift register 13, scaling unit 14, extrapolation coefficients computing unit 15, extrapolation unit 16, error signal generator 17. After setting trajectory of scanned area, errors of mismatch between center of object picture and electric center of tracing strobe are generated and stored in digital integrator 6. Record synchronization is provided by generator 8. Extrapolated increments of coordinates are stored in digital integrator 6 too. Initial setting of counter 10 and storage of current coordinate of object in register 13 are provided by generator 9. Goal of invention is accomplished by implementation of parallel generation of extrapolation increment and extrapolation errors with further storage in digital integrator 6 of channels 7 and 11. This results in extrapolation of trajectories described by third order equations. Drawings of circuits of computing unit 15, extrapolation unit 16 and generator 17 are given in invention specification. EFFECT: increased precision. 4 dwg