Patents Assigned to Parade Technologies, Ltd.
  • Patent number: 9659538
    Abstract: A system and method are disclosed to control the power consumption of column drivers in a display system. A video input signal is received which has an active video period and a vertical blanking period between frames. A timing controller transmits a first video frame to a column driver. The timing controller transmits a column driver disable command during a vertical blanking period. Prior to the subsequent active video period, the timing controller transmits a column driver enable command. The timing controller proceeds to transmit a second video frame to the column driver. In one embodiment, the timing controller determines whether to disable and enable the column driver based on a refresh rate, the refresh rate calculated by the timing controller from the video input signal.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: May 23, 2017
    Assignee: Parade Technologies, LTD.
    Inventors: Ming Qu, Zhengyu Yuan, Qing Yu, Xin Jin
  • Patent number: 9430983
    Abstract: A system and method are disclosed to control the power consumption of column drivers in a display system. A video input signal is received which has an active video period and a vertical blanking period between frames. A timing controller transmits a first video frame to a column driver. The timing controller transmits a column driver disable command during a vertical blanking period. Prior to the subsequent active video period, the timing controller transmits a column driver enable command. The timing controller proceeds to transmit a second video frame to the column driver. In one embodiment, the timing controller determines whether to disable and enable the column driver based on a refresh rate, the refresh rate calculated by the timing controller from the video input signal.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: August 30, 2016
    Assignee: Parade Technologies, Ltd.
    Inventors: Ming Qu, Zhengyu Yuan, Qing Yu, Xin Jin
  • Patent number: 9418607
    Abstract: A system and method are disclosed to utilize Gray code in order to reduce the power consumption of column drivers in a display system. Binary source data is received from a timing controller. A Gray code digitizer converts and encodes the binary source data into a binary portion of data and a Gray code data. The binary portion data and the Gray code data are transmitted through a shift register to a digital-to-analog converter. The shift register consumes less power processing the converted binary portion of data and Gray code data than the corresponding binary source data. The digital-to-analog converter decodes the Gray code and generates corresponding gamma voltage levels for display use.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: August 16, 2016
    Assignee: Parade Technologies, Ltd.
    Inventors: Ta-Tao Hsu, Quan Yu, Yueh-Lin Yang
  • Patent number: 9361838
    Abstract: A system and method are disclosed to utilize Gray code in order to reduce the power consumption of column drivers in a display system. Binary source data is received from a timing controller. A Gray code digitizer converts and encodes the binary source data into a binary portion of data and a Gray code data. The binary portion data and the Gray code data are transmitted through a shift register to a digital-to-analog converter. The shift register consumes less power processing the converted binary portion of data and Gray code data than the corresponding binary source data. The digital-to-analog converter decodes the Gray code and generates corresponding gamma voltage levels for display use.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: June 7, 2016
    Assignee: Parade Technologies, Ltd.
    Inventors: Ta-Tao Hsu, Quan Yu, Yueh-Lin Yang
  • Patent number: 9323385
    Abstract: An embodiment of a method for detecting noise for a capacitance sensing panel may comprise generating an input signal based on a noise signal, performing a series of measurements for measuring capacitances from a capacitive sensor sensitive to the noise signal, and controlling timing for at least one of the subconversions based on the input signal.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 26, 2016
    Assignee: Parade Technologies, Ltd.
    Inventors: Hans Van Antwerpen, Scott Swindle, Aaron Hogan, Paul Kelleher
  • Patent number: 9209818
    Abstract: A system and method are disclosed for performing on die jitter tolerance testing. A set of clocks are generated based on an input signal. The set of clocks include in an in-phase signal based on the data switching edge of the input signal. Additionally, the set of clocks include an inverted clock phase shifted by 180 degrees, and a pair of clocks phase shifted positively and negatively by a certain number of degrees, ?. Data input is sampled based on the inverted clock and the two phase shifted clocks. The eye opening of the input signal can be determined based on whether each of the inverted clock and the two phase shifted clocks sample the correct data from the input signal at various ? values.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: December 8, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Ming Qu, Yuanping Chen, Yuntao Zhu, Quan Yu, Kochung Lee
  • Patent number: 9196216
    Abstract: A system and method are disclosed is to prevent the screen tearing in a video display system with self-refresh features while limiting space used for memory size in the self-refreshing sink device. A flexible method is utilized to manage a frame buffer and control self-refresh display timing to prevent screen tearing. The sink device has capabilities including one or more of self-refreshing and applying single frame updates as well as burst single frame updates while self-refresh is active. The memory utilized by the frame buffer during self-refresh is limited to less than that needed to store two full frames of video.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: November 24, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Qing Yu, Jieyang Xu, Ding Lu
  • Patent number: 9106770
    Abstract: A system and method are disclosed for embedding a timing controller on column drivers which, among other advantages, reduces power consumption and size constraints. A standalone timing controller is eliminated by splitting a video input signal and delivering the signal to each of the column drivers. Timing controller functionality is embedded in each of the column drivers to allow the column drivers to process the received video signal. An auxiliary input used for communication between column drivers and an external system is received by a master column driver. The master column driver communicates with slave column drivers to enable point to point communication between each column driver and the external system.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: August 11, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Xin Jin, Zhengyu Yuan, Ming Qu
  • Patent number: 9100555
    Abstract: A system and a method are disclosed for a hybrid mode re-driver which, among other advantages, reduces power consumption while maintaining signal integrity. Equalization is performed on a signal to remove distortions such as inter-symbol interference. The signal is then analyzed and the quality of the signal is assessed. In some cases, retiming is then performed on the signal to remove additional signal distortions. In other cases, retiming is not performed and is transmitted to a driver while bypassing retiming components. When retiming components are bypassed, the retiming components are placed in a state of reduced power consumption to reduce system power consumption.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: August 4, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Hongquan Wang, Hongrong Zhang, Zhengyu Yuan, Ming Qu
  • Patent number: 9053673
    Abstract: A system and a method are disclosed for an intra-panel communication interface which, among other advantages, enhances system reliability and reduces bus width. A timing controller initializes communication with a plurality of source drivers by transmitting link data through a plurality of data channels and monitors source driver status through an auxiliary status channel. The plurality of source drivers share the auxiliary status channel to indicate their status. The timing controller transmits display data to a source driver through a data channel. The display data includes a request for status data from the source driver. The source driver transmits the requested status data to the timing controller via the auxiliary status channel.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: June 9, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Zhengyu Yuan, Jian Jin, Ming Qu, Ding Lu, Zhanpeng Zhang, Qing Ouyang
  • Patent number: 9035676
    Abstract: A system and method are disclosed for level shifting a DDC bus with a low voltage loss. A pull up circuit includes an NMOS transistor, a PMOS transistor and resistor. An NMOS pull up gate is also included in line with the DDC bus. When powered, the level shifter adjusts the voltage of transmitted signals to match the voltage of a receiving device. The resulting adjusted is slightly lower due to a threshold voltage lost across one or more transistors. Additionally, when unpowered, the level shifter releases the signal transmission line. Unadjusted signals can then be transmitted without consumption of power by the level shifter.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: May 19, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Liang Xu, Hongquan Wang
  • Patent number: 8988416
    Abstract: A system and method are disclosed to control the power consumption of column drivers in a display system. A video input signal is received which has an active video period and a vertical blanking period between frames. A timing controller transmits a first video frame to a column driver. The timing controller transmits a column driver disable command during a vertical blanking period. Prior to the subsequent active video period, the timing controller transmits a column driver enable command. The timing controller proceeds to transmit a second video frame to the column driver. In one embodiment, the timing controller determines whether to disable and enable the column driver based on a refresh rate, the refresh rate calculated by the timing controller from the video input signal.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: March 24, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Ming Qu, Zhengyu Yuan, Qing Yu, Xin Jin
  • Patent number: 8982932
    Abstract: A system and a method for communicating configuration data between a source device and a sink are described. An active buffer receives data from an auxiliary communication channel which communicates data between the source device and the sink device. The active buffer modifies data received from the auxiliary communication channel. For example, the active buffer amplifies the received data or electrically reshapes the received data. The modified data is then transmitted from the active buffer to a destination device. In one embodiment, the auxiliary communication channel is bi-directional and upon receiving data from a first device, the active buffer is modified to permit uni-directional transmission of data from the first device to a second device.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: March 17, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Ming Qu, Zhengyu Yuan, Kochung Lee
  • Publication number: 20150042551
    Abstract: A system and method are disclosed to utilize Gray code in order to reduce the power consumption of column drivers in a display system. Binary source data is received from a timing controller. A Gray code digitizer converts and encodes the binary source data into a binary portion of data and a Gray code data. The binary portion data and the Gray code data are transmitted through a shift register to a digital-to-analog converter. The shift register consumes less power processing the converted binary portion of data and Gray code data than the corresponding binary source data. The digital-to-analog converter decodes the Gray code and generates corresponding gamma voltage levels for display use.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 12, 2015
    Applicant: Parade Technologies, Ltd.
    Inventors: Ta-Tao Hsu, Quan Yu, Yueh-Lin Yang
  • Patent number: 8832844
    Abstract: A system and a method are disclosed for enabling fast switching in a multimedia interface system having content protection. By using a partial port receiver to decode a portion of the input at input ports that are not being output to a multimedia sink, the design of the switching system is simplified and silicon costs are reduced. Additionally, the switching system and method reduces the switching delay by maintaining content protection signaling with all of the input ports. This eliminates the need for re-authentication when a new multimedia source is selected.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: September 9, 2014
    Assignee: Parade Technologies, Ltd.
    Inventors: Qing Yu, Jieyang Xu, Ding Lu
  • Publication number: 20140168187
    Abstract: A system and method are disclosed to control the power consumption of column drivers in a display system. A video input signal is received which has an active video period and a vertical blanking period between frames. A timing controller transmits a first video frame to a column driver. The timing controller transmits a column driver disable command during a vertical blanking period. Prior to the subsequent active video period, the timing controller transmits a column driver enable command. The timing controller proceeds to transmit a second video frame to the column driver. In one embodiment, the timing controller determines whether to disable and enable the column driver based on a refresh rate, the refresh rate calculated by the timing controller from the video input signal.
    Type: Application
    Filed: May 6, 2013
    Publication date: June 19, 2014
    Applicant: Parade Technologies, Ltd.
    Inventors: Ming Qu, Zhengyu Yuan, Qing Yu, Xin Jin
  • Patent number: 8610479
    Abstract: A system and method are disclosed for generating a high accuracy and low power on die reference clock. An LC clock is generated on die and a frequency divider lowers the LC clock frequency to a target reference frequency. An RCO clock is generated on die with an unknown initial frequency. The RCO clock and target reference clock are compared to determine in which direction the frequency of the RCO clock should be adjusted to move closer to the target reference frequency. A signal is sent causing a current source or capacitor in the RCO circuit to be modified. Therefore, the RCO clock frequency is adjusted. The RCO circuit is repeatedly adjusted until the RCO clock frequency is sufficiently accurate. The LC clock is disabled to conserve the power that would have been consumed in generating the LC clock.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: December 17, 2013
    Assignee: Parade Technologies, Ltd.
    Inventors: Kochung Lee, Quan Yu, Yuntao Zhu, Lei Xie, Ming Qu
  • Patent number: 8144625
    Abstract: A system and a method for exchanging communication data between devices using a bi-directional communication channel are disclosed. A combiner is coupled to a source device via first bi-directional configuration channel and to a sink device via a second bi-directional configuration channel. Upon receiving data from the first bi-directional configuration channel and not receiving data from the second bi-directional configuration channel, the combiner transmits the received data to the sink device using the second bi-directional configuration channel and prevents data transmission from the sink device to the source device using the second bi-directional configuration channel.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: March 27, 2012
    Assignee: Parade Technologies, Ltd.
    Inventors: Ming Qu, Zhengyu Yuan, Kochung Lee
  • Patent number: 8094684
    Abstract: A system and a method for configuring communication between a source device and a sink device using captured configuration data are described. The source device communicates with a repeater, which modifies received data to facilitate transmission to the sink device, using a communication channel. The communication channel transmits video and/or audio data from the source device to the sink device. An auxiliary communication channel is used to communicate configuration data between the source device and sink device to optimize transmission and receipt of data through the communication channel. The repeater is coupled to the auxiliary communication channel and passively captures configuration data from the auxiliary communication channel. The repeater uses a subset of the captured configuration data (e.g., data rate, voltage swing, pre-emphasis, etc.) to modify how the repeater transmits data to the sink device using the communication channel.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: January 10, 2012
    Assignee: Parade Technologies, Ltd.
    Inventors: Ding Lu, Zhanpeng Zhang
  • Publication number: 20110150055
    Abstract: A system and a method for communicating configuration data between a source device and a sink are described. An active buffer receives data from an auxiliary communication channel which communicates data between the source device and the sink device. The active buffer modifies data received from the auxiliary communication channel. For example, the active buffer amplifies the received data or electrically reshapes the received data. The modified data is then transmitted from the active buffer to a destination device. In one embodiment, the auxiliary communication channel is bi-directional and upon receiving data from a first device, the active buffer is modified to permit uni-directional transmission of data from the first device to a second device.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Applicant: Parade Technologies, Ltd.
    Inventors: Ming Qu, Zhengyu Yuan, Kochung Lee