Patents by Inventor Tzach Hadas

Tzach Hadas 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).

  • Patent number: 10411688
    Abstract: A method and apparatus for implementing a CMOS buffer for driving a reference voltage that consumes very low current in normal operating conditions but drive high current when output voltage is off, tracking the required reference voltage. The circuit is operating in a “deadzone” most of the time, where pull-up and pull-down current paths are blocked, and ultra-low power comparators, with build-in offset, are monitoring the output voltage continuously, and driving compensation current, when needed. The circuit can be manufactured with a standard CMOS processing technology.
    Type: Grant
    Filed: June 24, 2018
    Date of Patent: September 10, 2019
    Assignee: PLSense Ltd.
    Inventors: Tuvia Liran, Uzi Zangi, Tzach Hadas
  • Patent number: 5933058
    Abstract: A self-tuning clock recovery phase-locked loop (PLL) includes a programmable divide-by-M, a phase-frequency detector, a programmable voltage-controlled oscillator (VCO), a programmable divide-by-N, and a PLL tuning circuit, which in normal mode operation, perform as a conventional PLL. When the frequency of an input clock signal to the PLL changes by more than a threshold value, however, the PLL tuning circuit causes the PLL to be retuned for the new frequency by adjusting offset and gain parameters in the PLL such that the input voltage to the VCO is mid-way in its input voltage range when the output clock frequency of the PLL is approximately equal to the input clock frequency multiplied by a closed loop gain of the PLL, so that the VCO is operating in a linear region having wide dynamic frequency range.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: August 3, 1999
    Assignee: Zoran Corporation
    Inventors: Victor Pinto, Neil David Feldman, Tzach Hadas, Yaakov Arie Zandman