Apparatus and method for visual display of images
AssigneeSony Corporation
InventorMorikazu Konishi
Life of this patent
Estimating the term…
Abstract
A low-power, less electromagnetic noise, and inexpensive display apparatus and a display method used in this apparatus are disclosed. During a frame period, an image-signal extracting circuit extracts a pixel signal Vext corresponding to a given pixel from an image signal Vd forming a frame image. The extracted pixel signal Vext is then stored in a memory cell unit during the frame period. Subsequently, the pixel signal Vext stored in the memory cell unit is read during the frame period. A display device corresponding to the read pixel signal Vext is excited for a predetermined duration of the frame period.
Claims12
A flat panel display method in which a picture is formed by sequentially and continuously displaying a plurality of frame images during respective frame periods in a time sequential order, each of said frame images being formed by sequentially displaying a plurality of pixels arranged in a matrix form in a time-division manner during a frame period, said method comprising:
- extracting a frame synchronizing signal from an image signal forming said frame image during the frame period;
- receiving the frame synchronizing signal in an image-signal extracting circuit;
- in the image-signal extracting circuit, extracting a pixel signal corresponding to a given pixel from the image signal in synchronization with the frame synchronizing signal;
- receiving the pixel signal in a controller through a memory device;
- generating a read signal in the controller at the timing of a change of the pixel signal;
- storing the read signal in a memory device;
- storing the extracted pixel signal in said memory device during said frame period;
- reading the pixel signal stored in said memory device during said frame period by simultaneously raising the read signal;
- and
- exciting the pixel corresponding to the read pixel signal for a predetermined duration of said frame period.
A flat panel display apparatus comprising:
- a plurality of display devices forming pixels arranged in a matrix;
- a pixel-signal extracting circuit to extract a signal corresponding to a given pixel from a high-frequency image signal;
- a memory device to store the extracted pixel signal;
- a controller adapted to receive the extracted pixel signal through the memory device and to generate a read signal at the timing of a change of the pixel signal;
- and
- a driver to sequentially supply a drive current to electrodes of said display devices for a predetermined duration of a frame period based on the pixel signal read from said memory device.
A flat panel display apparatus comprising:
- a plurality of display devices forming pixels arranged in a matrix;
- a pixel-signal extracting circuit to extract a signal corresponding to a given pixel from a high-frequency image signal;
- a plurality of memory device adapted to record, in a time sequential order, a plurality of pixel signals respectively extracted from a plurality of frame images arranged in a time sequential order;
- at least one controller having a delay circuit, wherein at least one controller is adapted to receive the extracted pixel signals through the plurality of memory devices and to generate a plurality of read signals at the timing of a change of a pixel signal and wherein the delay circuit is adapted to supply read signals to said plurality of memory devices with a time lag;
- and
- a driver to sequentially supply a drive current to electrodes of said display devices based on the pixel signals read from said memory devices.
Dependencies are inferred from the claim text.