Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1986-02-14
1988-05-03
Brigance, Gerald L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340735, 340723, 358148, G09G 116
Patent
active
047423501
ABSTRACT:
A system to display an image including a first memory for storing picture data representing the image attribute data to qualify the picture data. The attribute data includes embedded synchronization data. The system further includes a circuit that produces the image by scanning the picture data qualified by the attribute data onto to a display in accordance with the synchronization data. This invention further provides for storing the synchronization data within the attribute data enabling the synchronization data to be programmable but only requiring update of the synchronization data when the synchronization data is to be changed. The memory includes two buffers wherein one buffer is loaded with attribute and synchronization data while the other buffer is being read. After the other buffer is read, the buffers are toggled such so that the loaded buffer is read to provide the attribute and synchronization data while the previously read buffer is loaded with new attribute and synchronization data. This invention further provides the linking of attribute and synchronization data in the memory to facilitate buffer loading.
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Motorola CRT Controller (MC6845).
Ko Michael A.
Muhich John S.
Brigance Gerald L.
International Business Machines - Corporation
Tyson Thomas E.
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