Patent application number | Description | Published |
20140093181 | COMPRESSOR, DRIVING DEVICE, AND DISPLAY DEVICE - A compressor includes a memory storing a de-compression pixel value de-compressed after a pixel value is compressed, a direct compression unit compressing a pixel value corresponding to a compression target pixel, and a first difference compression unit configured to compress a difference value between the pixel value corresponding to the compression target pixel and a decompression pixel value corresponding to at least one reference pixel, an error evaluation unit, and a decompression unit. The error evaluation unit compares a pixel value error of the direct compression unit before and after compression with a difference value error of the first difference compression unit before and after compression and outputs a compression value obtained through compression of the direct compression unit or a compression value obtained through compression of the first difference compression unit together with an identifier indicating a compression method, based on the comparison result, to the decompression unit. | 04-03-2014 |
20150071559 | IMAGE CODING DEVICE AND IMAGE CODING METHOD - An image coding device includes a first block encoder and a second block encoder. The first block encoder compresses input pixel values including first and second input pixel values in a block. The first input pixel value is located at a first position of the block, and the second input pixel value is located at a second position of the block. The second block encoder compresses the input pixel values by the unit block. The first and second block encoders compare the input pixel values based on different methods of compression. The first block encoder outputs the first input pixel value as a first compressed pixel value, and compresses the second input pixel value to a second compressed pixel value. | 03-12-2015 |
20150145879 | COMPRESSION DEVICE AND COMPRESSION METHOD - A compression device includes a first compressor section, a second compressor section, and a selector. The first compressor section outputs a first compression result or a second compression result as a middle compression result. The first compression result includes a first compression pixel value generated by compressing pixel values of compression target pixels without referring to pixel values of pixels belonging to a line different from a current line. The second compression result includes a second compression pixel value generated by compressing pixel values of the compression target pixels based on a correlation among pixel values of the compression target pixels and reference approximate pixel values. The second compressor section outputs a third compression result based on the correlation among the pixel values of the compression target pixels. The selector outputs one of the middle compression result or the third compression result as a final compression result. | 05-28-2015 |
Patent application number | Description | Published |
20100113002 | Radio Communication Method, Radio Base Station, Radio Communication Terminal and Base Station Controller - The present invention is a radio communication method using a first radio base station and a second radio base station located adjacent to the first radio base station and including an adaptive array antenna for radiating a dynamic directional beam, the method including the steps of: acquiring moving speed of a radio communication terminal located in a cell formed by the first radio base station; requesting the second radio base station to radiate the directional beam in a direction of the cell formed by the first radio base station when the moving speed is equal to or more than a predetermined threshold; and accommodating the radio communication terminal in the second radio base station that has transmitted the directional beam in response to the request. | 05-06-2010 |
20100142441 | RADIO COMMUNICATION METHOD AND BASE STATION - Provided is a radio communication method employed in a base station having plural antenna elements. The method includes the steps of: setting an inner zone and an outer zone by dividing a cell formed by the base station into two; determining whether a mobile station is located in the inner zone or the outer zone on the basis of a predetermined criterion; notifying the mobile station located in the inner zone of control information, including information on channel allocation and a communication method, through a broadcast channel; and notifying the mobile station located in the outer zone of control information through a dedicated channel by beamforming using the plural antenna elements. | 06-10-2010 |
20100150083 | Radio Base Station and Channel Allocation Information Transmission Method - A radio base station includes: a propagation path characteristic acquisition unit which acquires propagation path characteristics between a radio communication terminal and a radio base station; and a channel controller which reports to the radio communication terminal that channel allocation information is transmitted by using a dedicated control channel if the acquired propagation characteristic satisfies a predetermined condition. After the channel control unit has reported to the radio communication terminal that the channel allocation information is transmitted by using an dedicated control channel, the channel control unit and a MAP processing unit transmit the channel allocation information by using an dedicated control channel instead of a broadcast control channel in the downstream frame. | 06-17-2010 |
20100150084 | Radio Base Station and Radio Communication Method - A radio base station ( | 06-17-2010 |
20100159927 | Cell Search Method and Base Station - The present invention relates to a cell search method for a multiband radio communication system including a mobile station and multiple base stations. The method includes the steps of: classifying base station information into multiple first categories on the basis of a cell size of each base station, the base station, information being information on the base stations; classifying the base station information into multiple second categories on the basis of a radio-frequency band of each base station; associating movement speeds with the respective first categories and with the respective second categories; acquiring a movement speed of the mobile station; selecting at least one of the first categories and at least one of the second categories on the basis of the acquired movement speed and the associations between the movement speeds and the respective first and second categories; creating a base station list on the basis of base station information which belongs to the selected first category and base station in information which belongs to the selected second category, the base station list being to be notified to the mobile station; notifying the mobile station of the base station list; and causing the mobile station to perform a cell search on the basis of the notified base station list. | 06-24-2010 |
20100197303 | Radio Communication System, Radio Communication Terminal, Radio Base Station and Radio Communication Method - The radio commutation terminal ( | 08-05-2010 |