Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1993-09-07
1995-01-03
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348402, 348407, 348413, 348416, H04N 141
Patent
active
053790766
ABSTRACT:
A video motion compensation circuit comprising a Y phase variation compensation section for inputting a macro slice address signal and a motion vector Y signal and compensating for a variation in a phase of the motion vector Y signal and a X phase variation compensation section for inputting a macro block address signal and a motion vector X signal and compensating for a variation in a phase of the motion vector X signal. The X phase variation compensation section includes four logic circuits, each having a 2-bit shifter for inputting the macro block address signal of 7 bits and outputting a 9-bit signal, a logic adder for logically combining low order 2 bits of the motion vector X signal of 5 bits to previously add 1 to a LSB of the macro block address signal, and a complement operation unit/shifter for taking a 2's complement of the motion vector X signal of 5 bits and increasing a MSB of the 2's complement-operated signal to output a 9-bit signal. The Y phase variation compensation section includes a 4-bit shifter for inputting the macro slide address signal of 6 bits and outputting a 10-bit signal and a complement operation unit/shifter for taking a 2's complement of the motion vector Y signal of 5 bits and increasing a MSB of the 2's complement-operated signal to output a 10-bit signal.
REFERENCES:
patent: 4661846 (1987-04-01), Kondo
patent: 4862260 (1989-07-01), Harradine et al.
patent: 5040061 (1991-08-01), Yonemitsu
patent: 5049991 (1991-09-01), Niihara
Chin Tommy P.
Goldstar Co. Ltd.
Lenchak Emil P.
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