Patents by Inventor Matthew David Ball

Matthew David Ball 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).

  • Rail-to-rail comparator with hysteresis
    Patent number: 7576572
    Abstract: A comparator, comprising at least one current stage for providing a first current proportional to a difference between first and second comparator inputs, the first current being provided to an amplifier input; an amplifier for amplifying a current provided to the amplifier input and providing a comparator output; apparatus for introducing hysteresis, comprising at least one of a current source and a current sink, the current source being arranged to selectively source a source current to the amplifier input such that the comparator output changes from a first state to a second state when a difference between the first and second inputs rises above a first value, and the current sink being arranged to selectively sink a sink current from the amplifier input such that the comparator output changes from the second state to the first state when the difference between the first and second inputs falls below a second value; and apparatus for controlling at least one of the source current and the sink current to be
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: August 18, 2009
    Assignee: Jennic Limited
    Inventor: Matthew David Ball
  • Rail-to-rail comparator with hysteresis
    Publication number: 20090058471
    Abstract: A comparator, comprising at least one current stage for providing a first current proportional to a difference between first and second comparator inputs, the first current being provided to an amplifier input; an amplifier for amplifying a current provided to the amplifier input and providing a comparator output; apparatus for introducing hysteresis, comprising at least one of a current source and a current sink, the current source being arranged to selectively source a source current to the amplifier input such that the comparator output changes from a first state to a second state when a difference between the first and second inputs rises above a first value, and the current sink being arranged to selectively sink a sink current from the amplifier input such that the comparator output changes from the second state to the first state when the difference between the first and second inputs falls below a second value; and apparatus for controlling at least one of the source current and the sink current to be
    Type: Application
    Filed: September 5, 2007
    Publication date: March 5, 2009
    Applicant: Jennic Ltd.
    Inventor: Matthew David Ball