| US 7,483,020 B2 | ||
| Display drive device, electro-optical device, electronic apparatus, and drive setup method of the display drive device | ||
| Atsunari Tsuda, Suwa (Japan); and Shingo Wakimoto, Matsumoto (Japan) | ||
| Assigned to Seiko Epson Corporation, (Japan) | ||
| Filed on Mar. 24, 2004, as Appl. No. 10/807,912. | ||
| Claims priority of application No. 2003-083302 (JP), filed on Mar. 25, 2003; and application No. 2003-083383 (JP), filed on Mar. 25, 2003. | ||
| Prior Publication US 2004/0239660 A1, Dec. 02, 2004 | ||
| Int. Cl. G06F 3/038 (2006.01) | ||
| U.S. Cl. 345—204 [345/211] | 12 Claims |
| 1. A display drive device comprising:
a drive circuit driving a display unit in which pixels are formed;
a nonvolatile storage circuit storing screen information indicating a position of a pixel to be driven in the display unit;
a control circuit reading the screen information from the nonvolatile storage circuit;
a drive setup circuit setting a position based on the screen information read by the control circuit in the drive circuit,
the drive setup circuit including an address control circuit that controls a driving column of pixels and a reading address
for display data; and
a determination circuit that determines whether a drive voltage is supplied from a voltage supply circuit that supplies a
drive voltage to the drive circuit based on the screen information read by the control circuit, and, if the determination
is negative, re-starts the voltage supply circuit and starts a re-setup operation by the drive setup circuit re-setting the
position based on the screen information read by the control circuit.
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