Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1990-07-25
1993-06-08
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
340717, H01J 2970, H01J 2972
Patent
active
052182746
ABSTRACT:
CRT display data output by a CRT controller is written in a frame memory at display timings of a CRT, and is read out of the frame memory at display timings of a flat panel display. The frame memory is comprised of by a dual-port memory. A flat panel display-controlling circuit writes the display data, output by the CRT controller, in the frame memory through the data write port of the dual-port memory, and reads the display data out of the frame memory through the data read port of the dual-port memory in synchronism with the display timings of the flat panel display. The data writing operation and the data reading operation are performed concurrently.
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Blum Theodore M.
Kabushiki Kaisha Toshiba
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