Patents by Inventor Henry Nurser

Henry Nurser 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).

  • Method and apparatus for determining a minimum clock delay in a memory
    Patent number: 6604213
    Abstract: An apparatus and method for determining a minimum clock delay provided to sense amplifiers of a memory array. The method first determines a response time of the overall memory circuit by varying the delay of an external clock until the output of the memory circuit is just valid. Then an externally provided sense amplifier clock is substituted for the internal sense amplifier clock and the instant of application of the externally provided sense amplifier clock is varied until the circuit output is just valid.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: August 5, 2003
    Assignee: STMicroelectronics Limited
    Inventor: Henry Nurser
  • System for measuring response time of a circuit by determining the time difference between the earlier and the later clock pulses applied to the circuit
    Patent number: 6584577
    Abstract: A method and device for measuring the response time of a circuit are described in which clocking pulses are applied to the circuit at input pads, the input pads being connected to the circuit by circuitry having substantially the same delays. By adjusting the timing of the later clock pulse relative to the earlier clock pulse until a valid output is just achieved, the response time of the circuit can be measured using a register circuit.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: June 24, 2003
    Assignee: STMicroelectronics Limited
    Inventor: Henry Nurser
  • Memory testing
    Patent number: 6584024
    Abstract: A method and apparatus for determining the write-recovery of an embedded memory by performing successive pseudo-write operations followed by read operations until a “just-valid” result is achieved. The read operations may include addressing memory cells storing a logic value opposite that of memory cells coupled to the bit lines in the pseudo-write operations.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: June 24, 2003
    Assignee: STMicroelectronics Limited
    Inventor: Henry Nurser
  • Memory testing
    Publication number: 20020044491
    Abstract: A method and apparatus as described for determining the write-recovery of an embedded memory by performing successive pseudo-write operations followed by read operations until a “just-valid” result is achieved.
    Type: Application
    Filed: July 16, 2001
    Publication date: April 18, 2002
    Inventor: Henry Nurser
  • Response time measurement
    Patent number: 6359816
    Abstract: To measure the response time of a circuit the time of application of a clock signal to an output flip-flop is advanced with respect to the time of application of a circuit input until a just valid output is obtained. The operation is repeated after interchanging the input and clock signals, and the two results are averaged.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: March 19, 2002
    Assignee: STMicroelectronics Limited
    Inventor: Henry Nurser