Signal processor

Television – Image signal processing circuitry specific to television

Patent

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Details

348571, 3647505, 3647365, 364768, H04N 514, H04N 964

Patent

active

057776881

ABSTRACT:
A plurality of signal processing elements are cascade-connected to form a signal processor having three signal paths. The signal processor is a small-sized device which can be shared by sum-of-products calculation and division. In each signal processing element, first and second shifters and an adder-subtracter are used for performing shift addition for multiplication of a variable by a constant which is a basis of the sum-of-products calculation. The adder-subtracter and a third shifter for shifting a result obtained by the adder-subtracter are used for performing subtraction and shifting for obtaining a partial quotient and a partial remainder of division. The partial quotient thus obtained is transferred to the signal processing element in the next stage through a flag holding circuit.

REFERENCES:
patent: 4482916 (1984-11-01), Acampora
patent: 4489393 (1984-12-01), Kawahara et al.
IEEE Journal of Solid-State Circuits, "A 54-MHz CMOS Programmable Video Signal Processor for HDTV Applications", C. Joanblanq, et al. vol. 25, No. 3, pp. 730-734, Jun. 1990.

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