Display device
First Claim
1. A display device for displaying a picture with grey-scale, the display device comprising:
- a lattice of pixel elements, each selectably settable in dependence on the respective pixel-data in a received signal representing one picture for display;
means to effect time-multiplex addressing of collections of rows of pixel elements within a group address period according to a predetermined sequence, each collection being addressed a plurality of address times for each picture;
the addressing means including means to set in each group address period a group of collections of rows said group consisting of a plurality of collections of rows spaced apart in the address sequence such that the collections of rows in a group form a series with adjacent collections of rows having a temporal separation exhibiting a geometric progression in the addressing sequence, the geometric progression having a common ratio N which is an integer of at least 2;
each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence thereby to effect a grey-scale display.
1 Assignment
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Accused Products
Abstract
The display has a video signal receiver and a store with a capacity to hold one picture of the video signal. Row-output devices enable the video information for respective rows of pixels to be taken out from picture store, and each has a bit extractor to separate out one bit of the information for each pixel of the respective row. The resultant signal is passed to pixel drivers which operates on a lattice formed of ferroelectric liquid crystal pixel-elements, which are time-multiplex addressed according to a predetermined sequence, each row being addressed a plurality of times for each picture. In the addressing groups of the rows are set simultaneously, each group consisting of a plurality of rows spaced apart in the addressing sequence such that the rows in a group form a series with adjacent rows having a temporal separation in the addressing sequence exhibiting a geometric progression with the common ratio N being an integer corresponding to 2 or more.
60 Citations
26 Claims
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1. A display device for displaying a picture with grey-scale, the display device comprising:
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a lattice of pixel elements, each selectably settable in dependence on the respective pixel-data in a received signal representing one picture for display; means to effect time-multiplex addressing of collections of rows of pixel elements within a group address period according to a predetermined sequence, each collection being addressed a plurality of address times for each picture; the addressing means including means to set in each group address period a group of collections of rows said group consisting of a plurality of collections of rows spaced apart in the address sequence such that the collections of rows in a group form a series with adjacent collections of rows having a temporal separation exhibiting a geometric progression in the addressing sequence, the geometric progression having a common ratio N which is an integer of at least 2; each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence thereby to effect a grey-scale display. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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2. A display for displaying a picture with grey-scale, the display device comprising:
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a lattice of pixel elements, each selectably settable in dependence on the respective pixel-data in a received signal representing one picture for display; means to effect time-multiplex addressing of collections of rows of pixel elements within a group address period according to a predetermined sequence, each collection being addressed a plurality of address times for each picture; the addressing means including means to set in each group address period a group of collections of rows, said group consisting of a plurality of collections of rows spaced apart in the address sequence such that the collections of rows in a group form a series with adjacent collections of rows having a temporal separation exhibiting a geometric progression in the addressing sequence, the geometric progression having a common ratio N which is an integer of at least 3; each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence, thereby to effect a grey-scale display.
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9. A method of displaying a picture with grey-scale in a display device, the display device having a lattice of pixel elements each selectably settable, the method comprising:
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receiving a signal including pixel-data and representing a plurality of pictures for display; time-multiplex addressing collections of rows of pixel elements within a group address period according to a predetermined sequence a plurality of address time for each picture; the addressing step including setting in each group address period a group of collections of rows, said group consisting of a plurality of collections of rows spaced apart in the address sequence such that collections of rows in said group form a series with adjacent collections of rows having a temporal separation exhibiting a geometric progression having a ration N which is an integer of at least 2; each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence, thereby to effect a grey-scale display. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of displaying a picture with grey-scale in a display device, the device having a lattice of pixel elements each selectably settable, the method comprising:
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receiving a signal including pixel-data and representing a plurality of pictures for display; time-multiplex addressing collections of rows of pixel element s within a group address period a plurality of address times for each picture; the addressing step including setting in each group address period a group of collections of rows, said group consisting of a plurality of collections of rows spaced apart in the addressing sequence such that collections of rows in said group form a series with adjacent collections of rows having a temporal separation exhibiting a geometric progression in the addressing sequence, the geometric progression having a common ratio N which is an integer of at least 3; each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence, thereby to effect a grey-scale display.
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16. A display device for displaying a picture with grey-scale, the display device comprising:
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a lattice of pixel elements, each selectably settable in dependence on the respective pixel-data in a received signal representing one picture for display; means to effect time-multiplex addressing of collections of rows of pixel elements within a group address period according to a predetermined sequence, each collection of rows being addressed a plurality of address times for each picture; the addressing means including means to set in each group address period a group of collections of rows, said group consisting of a plurality of collections of rows spaced apart in the addressing sequence such that the collections of rows in a group form a series with adjacent collections of rows having a temporal separation exhibiting a binary progression in the addressing sequence; each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence, thereby to effect a grey-scale display. - View Dependent Claims (17, 18, 19, 20, 21, 23, 24)
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22. A method of displaying a picture with grey-scale in a display device, the display device having a lattice of pixel elements, each selectably settable, the method comprising:
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receiving a signal including pixel-data and representing a plurality of pictures for display; time-multiplex addressing collections of rows of pixel elements within a group address period a plurality of address times for each picture; the addressing step including setting in each group address period a group of collections of rows, said group consisting of a plurality of collections of rows spaced apart in the addressing sequence such that collections of rows in said group form a series with adjacent collections of rows having a temporal separation exhibiting a binary progression; each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence, thereby to effect a grey-scale display. - View Dependent Claims (25, 26)
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Specification