Patents by Inventor Jianan Yang

Jianan Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130290753
    Abstract: In accordance with at least one embodiment, column level power control granularity is provided to control a low power state of a memory using a drowsy column control bit to control the low power state at an individual column level to protect the memory from weak bit failure. In accordance with at least one embodiment, a method of using a dedicated row of bit cells in a memory array is provided wherein each bit in the row controls the low power state of a respective column in the array. A special control signal is used to access the word line, and the word line is outside of the regular word line address space. A mechanism is provided to designate the weak bit column and set the control bit corresponding to that particular column to disable the drowsy/low power state for that column.
    Type: Application
    Filed: November 29, 2012
    Publication date: October 31, 2013
    Inventors: Ravindraraj Ramaraju, Jianan Yang, Mark W. Jetton, Thomas W. Liston, George P. Hoekstra, Andrew C. Russell
  • Patent number: 8446176
    Abstract: An integrated circuit ECO base cell module is formed with PMOS and NMOS gate electrode structures and power supply lines that are electrically separated from one another up to the second metal (M2) layer in a fixed circuit structure that may be reconfigured with one or more conductor elements formed above the M2 layer to form a predetermined circuit function.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 21, 2013
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Jianan Yang, Darrin L. Hutchinson, Stephen G. Jamison
  • Publication number: 20130049836
    Abstract: A flip-flop circuit includes a master latch, a master/slave gate, a slave latch, a slave gate, a feedback latch, and a master gate. The master latch has an input and an output. The master/slave gate has an input coupled to the output of the master latch and an output. The slave latch has input coupled to the output of the master/slave gate and an output. The slave gate has input coupled to the output of the slave latch and an output. The has an input coupled to the output of the slave gate and an output. The master gate has an input coupled to the output of the feedback latch and an output coupled to the input of the master latch.
    Type: Application
    Filed: August 29, 2011
    Publication date: February 28, 2013
    Inventors: Jianan Yang, Gary R. Morrison
  • Publication number: 20130049807
    Abstract: An integrated circuit comprises logic circuitry having a plurality of signal paths. A signal path of the plurality of signal paths has a propagation delay greater than a propagation delay of any other signal path of the plurality of signal paths. The signal path includes a plurality of components. The plurality of components is provided with a higher power supply voltage than any other signal path of the plurality of signal paths.
    Type: Application
    Filed: August 29, 2011
    Publication date: February 28, 2013
    Inventors: JIANAN YANG, Stephen G. Jamison, David L. Medlock, Gary Waugh
  • Patent number: 7777522
    Abstract: First circuitry is powered by a first power supply domain and provides a data signal referenced to the first power supply domain. Second circuitry is powered by a second power supply domain that differs from the first power supply domain. The data signal becomes referenced to the second power supply domain by a clocked level shifter that couples the first circuitry to the second circuitry and buffers the data signal from the first power supply domain to the second power supply domain by only using a single supply voltage. The clocked level shifter is clocked by a signal that is used to precharge a first node and a second node of the clocked level shifter until the data signal is valid for at least a setup time period. The first and second nodes are precharged to establish a known state in the clocked level shifter.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 17, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Jianan Yang, Wang K. Chen, Stephen G. Jamison
  • Publication number: 20100026343
    Abstract: First circuitry is powered by a first power supply domain and provides a data signal referenced to the first power supply domain. Second circuitry is powered by a second power supply domain that differs from the first power supply domain. The data signal becomes referenced to the second power supply domain by a clocked level shifter that couples the first circuitry to the second circuitry and buffers the data signal from the first power supply domain to the second power supply domain by only using a single supply voltage. The clocked level shifter is clocked by a signal that is used to precharge a first node and a second node of the clocked level shifter until the data signal is valid for at least a setup time period. The first and second nodes are precharged to establish a known state in the clocked level shifter.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventors: Jianan Yang, Wang K. Chen, Stephen G. Jamison
  • Publication number: 20090302885
    Abstract: A circuit for body biasing is provided. The circuit includes: (1) a p-type transistor having a first current terminal, which is coupled to a first voltage supply, a second current terminal, a control terminal, and a bulk terminal; and (2) an n-type transistor having a first current terminal, which is coupled to a second voltage supply different from the first voltage supply, a second current terminal, a control terminal, and a bulk terminal, wherein the bulk terminal of the p-type transistor, the second current terminal of the p-type transistor, and the control terminal of the n-type transistor is coupled to a first node, wherein the control terminal of the p-type transistor, the bulk terminal of the n-type transistor, and the second current terminal of the second transistor is coupled to a second node different from the first node.
    Type: Application
    Filed: June 6, 2008
    Publication date: December 10, 2009
    Inventors: JIANAN YANG, Wang K. Chen, Stephen G. Jamison, Arthur R. Piejko, Jun Tang