Patents Assigned to Raydium Semiconductor Corporation
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Publication number: 20130027823Abstract: An electric apparatus with ESD protection effect is provided. The electric apparatus comprises a high-side unit, a low-side unit, and a level shifter. The high-side unit comprises a first pad and a second pad. The low-side unit comprises a third pad and a fourth pad. The level shifter is connected between the first pad and the fourth pad. The level shifter comprises a first resistor, a clamp element, a second resistor, and an N-type transistor. The first resistor is connected between the first pad and a first node. The clamp element is connected between the first pad and a second node. The second resistor is connected between the first node and the second node. The N-type transistor has a source and a body connected to the fourth pad, a drain connected to the first node, and a gate connected to the low-side unit.Type: ApplicationFiled: July 16, 2012Publication date: January 31, 2013Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: KUN TAI WU, CHIEN KUO WANG
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Publication number: 20130009885Abstract: A touch control sensing apparatus comprises a logic control module configured to generate a plurality of control signals, a driving sensing control module having a parallel sensing control unit coupled to the logic control module, a signal comparing module having at least one amplifier coupled to the logic control module, a parallel to serial control module coupled to the logic control module, and an analog digital convertor coupled between the logic control module and the parallel to serial control module.Type: ApplicationFiled: September 23, 2011Publication date: January 10, 2013Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventor: Chien Yu CHAN
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Patent number: 8345028Abstract: A driving circuit applied in an electronic display apparatus is provided. The driving circuit includes a first exchange circuit and a first buffer. The first buffer includes first and second input stages, a second exchange circuit and first and second output stages. The first exchange circuit selectively couples a first input signal and a first output signal outputted from the first output stage to one of the first and the second input stages; and selectively couples a second input signal and a second output signal outputted from the second output stage to the other of the first and the second input stages. The second exchange circuit selectively couples the first input stage to one of the first and the second output stages and selectively couples the second input stage to the other of the first and the second output stages.Type: GrantFiled: August 5, 2010Date of Patent: January 1, 2013Assignee: Raydium Semiconductor CorporationInventors: Chih-Chuan Huang, Yu-Lung Lo, Hsin-Yeh Wu
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Publication number: 20120319931Abstract: The current disclosure discloses a driving circuit of a liquid crystal display. The driving circuit comprises a P-DAC, an N-DAC, a first input amplifier, a second input amplifier, a first output amplifier, a second output amplifier, a first switching circuit, a second switching circuit and a third switching circuit. The driving circuit is able to provide better brightness compensation for a corresponding pixel electrode and reduce the time needed to drive the corresponding pixel electrode.Type: ApplicationFiled: June 14, 2012Publication date: December 20, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventor: CHEN YU WANG
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Publication number: 20120319970Abstract: A detection circuit for a touch-sensing panel includes a successive approximation register analog-to-digital converter (SAR-ADC) and a timing control device. The SAR-ADC is configured to detect a coupling voltage to generate a multi-bit digital detection value. The timing control device is configured to control a detection time of each bit for the SAR-ADC.Type: ApplicationFiled: June 12, 2012Publication date: December 20, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: WEI FEN LIN, SHANG PING TANG
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Publication number: 20120306828Abstract: The invention provides a driving circuit applied in a LCD apparatus and operating method thereof. The driving circuit includes at least one first channel, at least one second channel, a timing controller, and a panel driver. The timing controller includes a digital signal switching unit. The digital signal switching unit selectively performs a polarity exchange to a first digital data signal and a second digital data signal according to a control signal. The panel driver includes an analog signal switching unit. The analog signal switching unit performs a switching corresponding to the polarity exchange according to the control signal to make the driving circuit selectively operated under a first operation mode or a second operation mode.Type: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Applicant: Raydium Semiconductor CorporationInventors: Li-Ping Lin, Ko-Yang Tso, Chi-Yuan Lu, Chin-Chieh Chao, Yu-Lung Lo
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Publication number: 20120306539Abstract: A fractional-n clock generator includes a first digital delay line module, a second delay line module, an address generator and a selector. The first delay line module receives a frequency-divided clock signal and generates first delay signals having different phase differences with respect to the clock signal. The second delay line module receives the clock signal and generates second delay signals having different phase differences with respect to the clock signal. The address generator selects one of the first delay signals as an output signal of the first delay line module and one of the second delay signals as an output signal of the second delay line module. The selector selects one of the output signals of the first delay line module and the second delay line module as an output signal. A delay of the first delay line module is different from that of the second delay line module.Type: ApplicationFiled: May 25, 2012Publication date: December 6, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventor: CHOU MIN CHUNG
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Publication number: 20120280966Abstract: A flicker suppression device applied in a display driver for preventing the output image data of the display driver from being affected by an electrostatic discharge (ESD) event is provided. The flicker suppression device includes an ESD detector and an output stage controller. The ESD detector is coupled to a first power wire of the display driver for determining whether an ESD level shift event occurs to the first system reference voltage signal on the first power wire. If so, a control signal corresponding to the first level is provided. The output stage controller controls the output stage circuit of the display driver to be in a high impedance state in response to the control signal corresponding to the first level to avoid the output stage circuit outputting an output image data that has been affected by an ESD event.Type: ApplicationFiled: April 4, 2012Publication date: November 8, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: Chien-Ming Chen, Hui-Wen Miao, Ko-Yang Tso
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Publication number: 20120280727Abstract: A power on reset circuit is capable of changing logic level of reset signal at different threshold voltages.Type: ApplicationFiled: May 4, 2012Publication date: November 8, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventor: LI PING LIN
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Publication number: 20120269308Abstract: A sampling clock selection module for a serial data stream is disclosed. The sampling clock selection module includes a multi-phase generation circuit, a sampling circuit, a comparison unit and a logic operation unit. The multi-phase generation circuit generates a plurality of non-overlapping clock phases derived from a reference clock signal. The phase selection circuit selects a sampling clock phase under a calibration mode. The sampling circuit performs sampling on the serial data stream a plurality of times to generate a plurality of sampled values in response to the sampling clock phase. The comparison unit compares the sampled values with the serial data stream so as to update a plurality of flag signals. The logic operation unit performs a logic operation on the flag signals so as to select a sampling clock phase under a normal operation mode from the clock phases.Type: ApplicationFiled: April 17, 2012Publication date: October 25, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: REN-FENG HUANG, HUI WEN MIAO, KO-YANG TSO, CHIN-CHIEH CHAO
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Publication number: 20120262395Abstract: An updating method for baseline output values of a touch-sensing panel is disclosed. The touch-sensing panel includes a plurality of X-directional lines and a plurality of Y-directional lines. The X-directional lines and Y-directional lines are arranged intersecting one another so as to form a sensing grid with a plurality of sensing nodes. The method includes the following steps: performing a first scan when the touch-sensing panel is not touched so as to obtain a plurality of first baseline output values; performing a second scan after the touch-sensing panel is touched so as to obtain plurality of touch output values; and updating the baseline output values on the sensing nodes based on a threshold, the first baseline output values and the touch output values.Type: ApplicationFiled: April 10, 2012Publication date: October 18, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventor: CHIEN YU CHAN
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Patent number: 8289034Abstract: A capacitance measurement circuit and a capacitance measurement method thereof. The capacitance measurement circuit for measuring a capacitor under test includes a capacitance to time unit, a continuous time integrator and an analog to digital converter. The capacitance to time unit generates a first clock signal and a second clock signal reverse to the first clock signal according to a first charge time of the capacitor under test and a second charge time of a variable capacitor. The continuous time integrator receives the first clock signal and outputs an integral signal according to the first clock signal. When the number of clocks of the second clock signal is equal to a default value, the analog to digital converter outputs a digital signal corresponding to a capacitance difference between the capacitor under test and the variable capacitor according to the integral signal.Type: GrantFiled: September 30, 2009Date of Patent: October 16, 2012Assignee: Raydium Semiconductor CorporationInventor: Yu Kuang
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Publication number: 20120256853Abstract: The present invention discloses a detection method for a touch input device. The touch input device includes a touch panel and a control device. The touch panel includes a plurality of X-directional lines and a plurality of Y-directional lines, which are arranged intersecting one another. The method includes the steps of: configuring the X-directional lines as scan lines and the Y-directional lines as sense lines; dividing the scan lines into a plurality of groups of scan lines; during each scanning operation, outputting a driving signal to one of the plurality of groups of scan lines; after each scanning operation, receiving voltages on the sense lines and converting the voltages into a plurality of digital signals; storing the digital signals into a storage unit; and determining a touch status based on the digital signals.Type: ApplicationFiled: February 24, 2012Publication date: October 11, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventor: CHIEN YU CHAN
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Publication number: 20120256855Abstract: The disclosure provides a driving and sensing method for a touch-sensing input device including a touch-sensing panel module and a liquid crystal display panel module. The touch-sensing panel module includes a touch-sensing panel and a control device, wherein the touch-sensing panel includes a plurality of X-directional lines and Y-directional lines arranged intersecting one another. The method includes steps of generating a spread spectrum clock signal using the control device; generating a driving signal and a sensing signal based on the spread spectrum clock signal; outputting the driving signal to one of the X-directional lines or one of the Y-directional lines; receiving voltages on the corresponding Y-directional line or X-directional line in response to the sensing signal and converting the same to a digital signal; and determining a touch status of the touch-sensing panel based on the digital signal.Type: ApplicationFiled: March 26, 2012Publication date: October 11, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: CHIEN YU CHAN, SHANG PING TANG
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Publication number: 20120249457Abstract: A control device of an ungrounded touch-sensing panel is disclosed. The touch-sensing panel includes a plurality of first-directional lines and a plurality of second-directional lines arranged intersecting one another. The control device includes a selection circuit, at least one capacitor, a driving signal generation circuit, an analog to digital conversion module and a signal processing unit. The selection circuit is configured to select at least one scan line and at least one sense line from the first-directional lines and the second-directional lines during each scanning operation. After the new scan line and sense line are generated, each capacitor is coupled between each scan line and each sense line selected by the selection circuit to increase a total capacitance between the scan line and the sense line.Type: ApplicationFiled: March 12, 2012Publication date: October 4, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: SHIH TZUNG CHOU, TSUNG LIN WU, KAI MING LIU
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Publication number: 20120229483Abstract: A panel driving device for driving a display panel including N data lines is disclosed. The panel driving device includes a memory array and a source driver. The memory array includes M memory blocks, a controller and an output unit. Each memory block includes N memory units. The controller is configured to divide serial image data into M groups of sub-image data and write each group of sub-image data into the corresponding memory block sequentially, wherein each group of sub-image data has N sub-image data. The output unit is configured to output the data in the M memory blocks sequentially in a time division manner in response to a selection signal. The source driver includes N driving units having the same configuration. After the driving unit receives the time-divided data output from the output unit, signal processing is performed to generate an image signal to be output to the corresponding data line.Type: ApplicationFiled: March 6, 2012Publication date: September 13, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: HUNG LI, JUN REN SHIH, YU CHAO CHANG, FENG LI LIN, CHIN CHIEH CHAO
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Patent number: 8258461Abstract: An apparatus of generating an optical tweezers with momentum and method thereof and an optical tweezers photo-image for guiding particles are provided. The apparatus generates at least one optical tweezers on an examined object that carries at least one particle. The apparatus includes a laser source, a diffractive optical element and a convergent lens. The laser beam from the laser source passes through the diffractive optical element to produce a diffractive pattern. The laser beam is then received by the convergent lens and then to be focused on a plane of the examined object. The optic axis of the convergent lens is substantially not perpendicular to the plane of the examined object, so that the laser beam is projected onto the plane of the examined object in a skewed manner for providing a lateral momentum to move the particle.Type: GrantFiled: July 30, 2008Date of Patent: September 4, 2012Assignee: Raydium Semiconductor CorporationInventors: Long Hsu, Cheng-Hsien Liu, Sheng-Yang Tseng, William Wang, Chung-Cheng Chou, Fung-Hsu Wu, Chen Peng, Ta-Yuan Lee
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Patent number: 8259774Abstract: A spread spectrum clock signal generator for spreading an input clock signal into an output clock signal includes a clock signal delay chain for delaying the input clock signal into a delay clock signal group having a plurality of delay clock signals, a modulation controller for outputting a counter clock signal control signal, a clock signal selection circuit for selecting, from the delay clock signal group, a modulation clock signal group having a plurality of modulation clock signals, a programmable counter for generating a counting value according to a counter clock signal, and a clock signal output unit for combining the modulation clock signals into the output clock signal according to the counting value, and further generating the counter clock signal, outputted to the programmable counter, according to the counter clock signal control signal.Type: GrantFiled: June 4, 2009Date of Patent: September 4, 2012Assignee: Raydium Semiconductor CorporationInventors: Chien-Yu Chan, Shao-Ping Hung, Jun-Ren Shih
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Publication number: 20120200358Abstract: A comparator includes: a wide-swing operation transconductance amplifier (OTA), having first and second differential input pairs for receiving first and second differential input signals respectively, the wide-swing OTA generating first and second intermediate output voltages in comparing the first with the second differential input signals; a current switch group; a current mirror group, wherein when an input common mode voltage of the first and the second differential input signal tends to one of a first and a second reference voltage, one of the first and the second differential input pair is turned off, and the current switch group and the current mirror group compensate a current flowing through the other of the first and the second differential input pair; and a decision circuit coupled to the wide-swing OTA, for enlarging a voltage difference between the first and the second intermediate output voltage to output a voltage comparison output signal.Type: ApplicationFiled: January 20, 2012Publication date: August 9, 2012Applicant: RAYDIUM SEMICONDUCTOR CORPORATIONInventors: Yu Kuang, Shih-Tzung Chou
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Patent number: 8233253Abstract: The invention discloses a controlling apparatus for a signal outputting circuit in an electronic system. The controlling apparatus includes a detecting circuit, a switch, and a controlling circuit. The detecting circuit is used for detecting whether the electronic system has an abnormal condition. The switch is electrically connected between a signal receiving terminal and the signal outputting circuit. The controlling circuit is electrically connected between the detecting circuit and the switch. Once the detecting circuit detects that the electronic system has the abnormal condition, the controlling circuit sets the switch into a high-impedance state.Type: GrantFiled: April 21, 2009Date of Patent: July 31, 2012Assignee: Raydium Semiconductor CorporationInventors: Chih-Chuan Huang, Hui-Wen Miao, Ko-Yang Tso