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US 6,320,572 B1Granted
Control circuit for liquid crystal display
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTsutomu Takabayashi, Masaru Nishimura, Hirofumi Shinohara
Life of this patent
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Abstract
A control circuit for controlling a driving circuit that provides signals to a displaying means, wherein a function of outputting a plurality of digital signals at different phases is included, and said phases can be set by selective elements.
Claims15
A control circuit for controlling registered data signals provided to a display device, said control circuit comprising:
- a plurality of series-connected digital delay elements adapted to receive a clock signal at an input of the series-connected digital delay elements;
- and
- at least one decoder device having inputs coupled to connection points of said series-connected delay elements and including at least one selection signal input,
- wherein a delayed version of the clock signal is output from said decoder device as a function of a signal at the selection signal input of the decoder device, and
- at least one of the clock signal and the delayed version of the clock signal is used to respectively clock at least one register for registering the data signals.
2 more elements
A control circuit for controlling the timing sequence of outputting registered data to a display device, comprising:
- a plurality of series-connected delay elements adapted to receive a clock signal at an input thereof and configured to provide several stages of delayed versions of the clock signal;
- and
- a plurality of latches for outputting registered data at a timing sequence selected based on a combination of the clock signal and a delayed version of the clock signal from the series-connected delay elements;
- wherein a sum of a total delay time of the series-connected delay elements is less than one cycle of the clock signal.
1 more element
Dependencies are inferred from the claim text.