Television – Image signal processing circuitry specific to television – With details of static storage device
Patent
1992-08-24
1994-06-07
Powell, Mark R.
Television
Image signal processing circuitry specific to television
With details of static storage device
358444, H04N 500
Patent
active
053194608
ABSTRACT:
An image signal processing device having a frame memory which includes a first-field storage area for storing a first-field image signal and a second-field storage area for storing a second-field image signal and is capable of storing an image signal for one frame is arranged to cause the frame memory to store the image signal for one frame by every field in separate storage areas, and, after that, in reading out the second-field image signal included in the image signal for one frame stored in the frame memory, to temporarily store in the first-field storage area the second-field image signal which has been stored in the second-field storage area, and then read out the second-field image signal. This arrangement enables the device to efficiently use the memory and to stably output the image signal without any image turbulence. The arrangement thus enhances the operability of the device.
REFERENCES:
patent: 4272787 (1981-06-01), Michael et al.
patent: 4477830 (1984-10-01), Lindman et al.
patent: 4506298 (1985-03-01), Mansell et al.
patent: 4555572 (1984-06-01), Malden
patent: 4683497 (1987-07-01), Mehrgardt
patent: 4689660 (1987-08-01), Kashigi
patent: 4745462 (1988-05-01), Dischert
Canon Kabushiki Kaisha
Powell Mark R.
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