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US 8,786,578 B2Granted
Pointing device and display apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorsByung-seok Soh, Sang-on Choi, Yong-wan Choi, Mi-ra Yu
Life of this patent
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Abstract
A pointing device and a display apparatus applying the same are provided. The pointing device corrects an error that occurs in a boundary between block in calculating a current location of the pointing device and calculates the current location. Accordingly, an error occurring in a boundary between blocks in calculating a current location of the pointing device is prevented.
Claims21
A pointing device which operates in association with a display apparatus, the pointing device comprising:
- an optical sensor which senses a plurality of optical signals;
- and
- a controller which calculates a current location pointed by the pointing device on a screen of the display apparatus divided into a plurality of blocks, based on points of time at which the plurality of optical signals are sensed by the optical sensor on the screen of the display apparatus,
- wherein the controller calculates the current location using the plurality of blocks, and corrects a location error that occurs when the current location pointed by the pointing device is located adjacent to a boundary area between at least two adjacent blocks among the plurality of blocks.
1 more element
A display apparatus, comprising:
- a display panel which is divided into a plurality of blocks and displays an input image;
- a driving unit which applies a driving voltage to the display panel;
- and
- a controller which controls the driving unit to drive the display panel over a first light emitting period, a second light emitting period, and a third light emitting period,
- wherein, during the first light emitting period, the controller controls pixel lines of a first axis direction on the display panel to emit light on a line basis in sequence, during the second light emitting period, the controller controls pixel lines of a second axis direction included in each block group, comprising at least two blocks of the plurality of blocks, to emit light on a line basis in sequence with respect to all of the block groups, and during the third light emitting period, the controller controls pixels included in each block of the plurality of blocks to emit light at a time on a block basis in sequence with respect to all of the blocks.
2 more elements
An electronic board system comprising:
- a display device which comprises a screen divided into a plurality of blocks and a controller, and displays an input image on the screen, wherein the controller:
- during a first light emitting period, controls pixel lines of a first axis direction on the screen to emit first light on a line basis in sequence;
- during a second light emitting period, controls pixel lines of a second axis direction included in each block group, comprising at least two blocks of the plurality of blocks, to emit second light on a line basis in sequence with respect to all of the block groups;
- and
- during a third light emitting period, controls pixels included in each block of the plurality of blocks to emit third light at a time on a block basis in sequence with respect to all of the blocks;
- and
- a pointing device which senses first, second and third optical signals from the first, second and third lights, respectively, calculates a current location pointed by the pointing device on the screen, based on points of time at which the first, second and third optical signals are sensed, and transmits information on the current location to the display device,
- wherein the controller adjusts the current location if the current location is determined to be located adjacent to an boundary area between at least two adjacent blocks among the plurality of blocks.
5 more elements
Dependencies are inferred from the claim text.