Patents Assigned to RAONTECH INC.
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Patent number: 10795159Abstract: A micro display driving substrate for a head-mounted display (HMD) terminal unit worn by a user, comprises: an LCoS (Liquid Crystal on Silicon) pixel array configured of one or more first electrode lines arranged while keeping a predetermined distance and one or more second electrode lines arranged to intersect with the first electrode lines while keeping a predetermined distance; a data driving unit for supplying the video data converted into an analog signal to the first electrode lines of the LCoS pixel array; a line driving unit for receiving the video control signal and providing a line selection signal for selecting a second electrode line; and a support control unit for driving a light source needed to display an image.Type: GrantFiled: November 29, 2018Date of Patent: October 6, 2020Assignee: RAONTECH INC.Inventor: Min-Seok Kim
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Patent number: 10530386Abstract: A digital sigma-delta modulator may be provided that includes: a multiplexer which receives N-bit input data from each of M number of input terminals and sequentially outputs; an adder which outputs carry out (CO) data and N-bit added data obtained by adding the N-bit input data and N-bit added data output in a previous cycle; a memory which divides the N-bit added data output from the adder into A-bit added data and (N?A)-bit added data and stores the A-bit added data and the (N?A)-bit added data; and a demultiplexer which receives the output carry out (CO) data and outputs to each of M number of output terminals.Type: GrantFiled: June 8, 2018Date of Patent: January 7, 2020Assignee: RAONTECH, Inc.Inventors: Je-Kwang Cho, Min Seok Kim
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Patent number: 10180573Abstract: A micro display apparatus reduces weight and volume of a head-mounted display (HMD) terminal and simplify components used in the HMD terminal by embedding HMD terminal devices such as a differential signal receiver, a light source control unit on a driving substrate (backplane) for HMD display in the form of a head-mounted display. The apparatus includes a terminal control unit for receiving a video signal from outside, converting the video signal into a video data and a video control signal for displaying an image, storing the video data and the video control signal, converting the converted video data and video control signal into differential signals and outputting the differential signals; and a HMD terminal unit worn by a user, for receiving the differential signals from the terminal control unit, converting the video data and the video control signal into TTL or LVCMOS signals and displaying the video data.Type: GrantFiled: September 24, 2013Date of Patent: January 15, 2019Assignee: RAONTECH INC.Inventor: Min-Seok Kim
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Image distortion compensation display device and image distortion compensation method using the same
Patent number: 10152814Abstract: A display device capable of image distortion compensation may be provided that includes a display panel which outputs a compensated video signal. The display panel includes: an input interface controller which receives a video signal; a memory which stores the video signal received by the input interface controller; a memory controller which controls an input and an output of the memory; and an image distortion compensation device which handles a pixel position and a pixel value of the video signal stored in the memory and generates the compensated video signal.Type: GrantFiled: October 26, 2016Date of Patent: December 11, 2018Assignee: RAONTECH, INC.Inventors: Sung Wook Eo, Joon Goo Lee, Min Seok Kim -
Publication number: 20170075115Abstract: A micro display apparatus reduces weight and volume of a head-mounted display (HMD) terminal and simplify components used in the HMD terminal by embedding HMD terminal devices such as a differential signal receiver, a light source control unit on a driving substrate (backplane) for HMD display in the form of a head-mounted display. The apparatus includes a terminal control unit for receiving a video signal from outside, converting the video signal into a video data and a video control signal for displaying an image, storing the video data and the video control signal, converting the converted video data and video control signal into differential signals and outputting the differential signals; and a HMD terminal unit worn by a user, for receiving the differential signals from the terminal control unit, converting the video data and the video control signal into TTL or LVCMOS signals and displaying the video data.Type: ApplicationFiled: September 24, 2013Publication date: March 16, 2017Applicant: RAONTECH INC.Inventor: Min-Seok KIM
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Patent number: 9472152Abstract: A circuit for driving a liquid crystal display includes a high selection unit turned on by a high selection signal, a low selection unit turned on by a low selection signal and transferring a low data signal to one side of the first storage capacitor, a high transfer unit connected to one side of the first storage capacitor, turned on by a high transfer signal and transferring voltage, a low transfer unit connected to one side of the first storage capacitor, turned on by a low transfer signal and transferring the voltage stored at one side of the first storage capacitor to one side of the liquid crystal capacitor, and a reset unit connected to one side of the liquid crystal capacitor, turned on by a reset signal and transferring a center voltage to one side of the liquid crystal capacitor.Type: GrantFiled: July 8, 2014Date of Patent: October 18, 2016Assignee: RAONTECH INC.Inventors: Min-Seok Kim, Jang-Sub Sohn
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Patent number: 9384688Abstract: A circuit for driving a liquid crystal display includes: a high selection unit turned on by a high selection signal and transferring a high data signal or a common voltage to one side of a storage capacitor; a low selection unit; a high transfer unit connected to one side of the storage capacitor; and a low transfer unit connected to the other side of the storage capacitor, turned on by a low transfer signal and transferring voltage stored at the other side of the storage capacitor to one side of the liquid crystal capacitor or transferring the low data signal or the common voltage transferred by the low selection unit to one side of the liquid crystal capacitor.Type: GrantFiled: July 8, 2014Date of Patent: July 5, 2016Assignee: RAONTECH INC.Inventors: Min-Seok Kim, Jang-Sub Sohn
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Publication number: 20150084938Abstract: A micro display apparatus reduces weight and volume of a head-mounted display (HMD) terminal and simplify components used in the HMD terminal by embedding HMD terminal devices such as a differential signal receiver, a light source control unit on a driving substrate (backplane) for HMD display in the form of a head-mounted display. The apparatus includes a terminal control unit for receiving a video signal from outside, converting the video signal into a video data and a video control signal for displaying an image, storing the video data and the video control signal, converting the converted video data and video control signal into differential signals and outputting the differential signals; and a HMD terminal unit worn by a user, for receiving the differential signals from the terminal control unit, converting the video data and the video control signal into TTL or LVCMOS signals and displaying the video data.Type: ApplicationFiled: September 24, 2013Publication date: March 26, 2015Applicant: RAONTECH INC.Inventor: Min-Seok KIM