Display apparatus and display method
AssigneeJapan Display Inc.
InventorsSoichiro Kurokawa, Koji Noguchi
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Abstract
A display apparatus includes: a display that displays a screen corresponding to a video signal; a write unit that writes the video signal into a memory at a predetermined writing speed; and a read unit that reads the video signal which is written into the memory at a reading speed which is different from the writing speed, and that displays the read video signal on the display, wherein the memory has a capacity which is smaller than the video signal of 1 frame, includes a write address and a read address, the addressing of which is formed in a ring shape, and independently writes and reads the video signal at different speeds.
Claims2
A display apparatus comprising:
- a display that displays a screen corresponding to a video signal, the display includes a plurality of pixels;
- a control unit configured to write the video signal into a memory at a predetermined writing speed according to a synchronization signal;
- a source driver configured to
- read a pixel signal of one horizontal line based on the video signal which is written into the memory, at a reading speed which is faster than the writing speed according to a control signal from the control unit,
- supply the pixel signal to each of the plurality of pixels, and
- display the read video signal on the display;
- and
- a capacitance type touch panel configured to be layered on the display and detect a touch operation,
- wherein the memory has a capacity which is smaller than the video signal of one frame, includes a write address and a read address, the addressing of which is formed in a ring shape, and independently writes and reads the video signal at different speeds,
- wherein the control unit controls the source driver to start reading the video signal when the video signal is written to fill a full capacity of the memory, allowing the touch panel to detect the touch operation in a blanking period, and
- wherein, when the capacity of the memory is 10% of the video signal of the single frame, the source driver reads the video signal which is written into the memory at a reading speed which is increased by 10% of the writing speed, and displays the video signal on the display.
A display method of a display apparatus which includes a display that displays a screen corresponding to a video signal, the display includes a plurality of pixels, comprising:
- writing the video signal into a memory at a predetermined writing speed according to a synchronization signal by a control unit;
- and
- reading a pixel signal of one horizontal line based on the video signal which is written into the memory, at a reading speed which is faster than the writing speed according to a control signal from the control unit by the source driver;
- supplying the pixel signal to each of the plurality of pixels by the source driver;
- and
- displaying the read video signal on the display by the source driver,
- wherein the memory has a capacity which is smaller than the video signal of one frame, includes a write address and a read address, the addressing of which is formed in a ring shape, and independently writes and reads the video signal at different speeds,
- wherein the control unit controls the source driver to start reading the video signal when the video signal is written to fill a full capacity of the memory, allowing the touch panel to detect a touch operation in a blanking period, and
- wherein, when the capacity of the memory is 10% of the video signal of the single frame, the source driver reads the video signal which is written into the memory at a reading speed which is increased by 10% of the writing speed, and displays the video signal on the display.
Dependencies are inferred from the claim text.