Method for driving a liquid crystal display device
First Claim
1. A video display method for driving a liquid crystal display for an interlaced video signal system having a line memory for storing one horizontal period of video data of a complex video signal, a field memory for storing one field of video data, a signal driving circuit for generating signal driving signals in response to the video data transferred from either the line memory or the field memory and a scanning driving circuit for generating scanning driving signals for a display in which the video signal is divided into an odd and even field comprising the following steps:
- sequentially writing the video data of one horizontal period of the video signal in the line memory;
during the first half of the horizontal period of the video signal, transferring the video data of the previous field, which has been stored before and after the present horizontal period to the signal driving circuit; and
during the second half of the horizontal period, transferring the video data stored in the line memory to the signal driving circuit.
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Accused Products
Abstract
A video display for a liquid crystal display and a method for displaying a complex video signal thereon is provided. A line memory stores one line of video data of a complex video signal. A field memory stores one field of video data of the complex video signal. A signal driving circuit generates a signal driving signal in response to the video data stored in the line memory and the field memory. A multiplexer selectively transmits the video date from the line memory and field memory to the signal driving circuit. One horizontal period of the video signal is sequentially written in the line memory. During the first half of the horizontal period of the video signal, video data of the previous field which is stored in the field memory is transferred to the signal driving circuit. During the second half of the horizontal period, the video data stored in the line memory is transferred to the signal driving circuit. The signal driving circuit generates scanning driving signals for the liquid crystal display, each signal being divided into an odd and even field.
97 Citations
26 Claims
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1. A video display method for driving a liquid crystal display for an interlaced video signal system having a line memory for storing one horizontal period of video data of a complex video signal, a field memory for storing one field of video data, a signal driving circuit for generating signal driving signals in response to the video data transferred from either the line memory or the field memory and a scanning driving circuit for generating scanning driving signals for a display in which the video signal is divided into an odd and even field comprising the following steps:
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sequentially writing the video data of one horizontal period of the video signal in the line memory; during the first half of the horizontal period of the video signal, transferring the video data of the previous field, which has been stored before and after the present horizontal period to the signal driving circuit; and during the second half of the horizontal period, transferring the video data stored in the line memory to the signal driving circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A video display for displaying on a liquid crystal display a complex video signal divided into an odd field and even field and having a plurality of horizontal signal periods, comprising:
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line memory means for serially writing the video data of one horizontal signal period of the video signal in the first half of the horizontal period; field memory means for storing the preceeding odd and even fields and for serially reading a stored line of video data of the video signal during the first half of the horizontal period, and writing the line of video data read from the line memory means during the second half of the horizontal period; signal driving means for serially receiving the video data signals from the line memory means and field memory means and generating a parallel driving signal for application to the liquid crystal display; and multiplexer means for selectively transmitting either the video data written in the line memory means or the video data written in the field memory means to the signal driving means. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification