Patents by Inventor David A. Sobel

David A. Sobel 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: 20050040891
    Abstract: Provided is system for an improved programmable gain amplifier (PGA). The system includes an amplifier and a first gain control mechanism. The first gain control mechanism includes a circuit input port and is positioned along a feedback path of the amplifier. The first gain control mechanism is configured to (i) receive an input signal and (ii) moderate gains applied to the received input signal, the applied gains including gain values of greater than or equal to one. A second gain control mechanism is coupled to the first gain control mechanism and is integrated with a function of the amplifier. The second gain control mechanism (i) provides gain values of less than one and (ii) decreases a feedback factor of the amplifier when the gain values are provided having values of less than one.
    Type: Application
    Filed: September 20, 2004
    Publication date: February 24, 2005
    Inventor: David Sobel
  • Patent number: 6833759
    Abstract: Provided is system for an improved programmable gain amplifier (PGA). The system includes an amplifier and a first gain control mechanism. The first gain control mechanism includes a circuit input port and is positioned along a feedback path of the amplifier. The first gain control mechanism is configured to (i) receive an input signal and (ii) moderate gains applied to the received input signal, the applied gains including gain values of greater than or equal to one. A second gain control mechanism is coupled to the first gain control mechanism and is integrated with a function of the amplifier. The second gain control mechanism (i) provides gain values of less than one and (ii) decreases a feedback factor of the amplifier when the gain values are provided having values of less than one.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: December 21, 2004
    Assignee: Broadcom Corporation
    Inventor: David A. Sobel
  • Publication number: 20040078771
    Abstract: Provided a method of reducing impedance variations in an electrical circuit structured and arranged for placement on an integrated circuit (IC) substrate. The method includes forming sets of parallel connected resistors, each set corresponding to one of the impedance devices on the IC. Each set also includes two or more parallel resistor paths, each resistor path including two or more cascaded resistors and has a total impedance value substantially equal to the predetermined impedance value of its corresponding impedance device. Finally, the method includes configuring the sets of parallel resistor paths to form an interdigital structure across the substrate when the electrical circuit is placed on the IC.
    Type: Application
    Filed: July 31, 2003
    Publication date: April 22, 2004
    Inventor: David A. Sobel
  • Publication number: 20040051586
    Abstract: A system is provided for correcting start-up deficiencies in an amplifier. The system includes a comparing device configured to (i) receive a second circuit node voltage and a reference voltage as inputs, (ii) compare the received second circuit node voltage and the reference voltage, and (iii) produce a compensating voltage signal based upon the comparison. Next, an active device has a control terminal connected to an output port of the comparing device and is configured to receive the compensating voltage signal. The active device also includes an output terminal connected to the control terminal of the second active device, and a common terminal connected to a first circuit node. Another active device has a control terminal connected to the output port of the comparing device and is configured to receive the compensating voltage signal. The other active device also has an output terminal connected to the control terminal of the first active device, and a common terminal connected to the first circuit node.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 18, 2004
    Applicant: Broadcom Corporation
    Inventor: David A. Sobel
  • Patent number: 6653901
    Abstract: A system is provided for correcting start-up deficiencies in an amplifier. The system includes a comparing device configured to (i) receive a second circuit node voltage and a reference voltage as inputs, (ii) compare the received second circuit node voltage and the reference voltage, and (iii) produce a compensating voltage signal based upon the comparison. Next, an active device has a control terminal connected to an output port of the comparing device and is configured to receive the compensating voltage signal. The active device also includes an output terminal connected to the control terminal of the second active device, and a common terminal connected to a first circuit node. Another active device has a control terminal connected to the output port of the comparing device and is configured to receive the compensating voltage signal. The other active device also has an output terminal connected to the control terminal of the first active device, and a common terminal connected to the first circuit node.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 25, 2003
    Assignee: Broadcom Corporation
    Inventor: David A. Sobel
  • Publication number: 20030216940
    Abstract: A method for enhancing and supplementing the informed consent process of a patient undergoing a medical procedure is disclosed. A plurality of interactive multi-media program segments relating to a medical procedure are presented on-line to a patient who is to undergo the procedure. The patient views the multi-media program segments which may include a review of anatomy and physiology, the disease, the procedure, pre and post-operative instructions and risks and benefits. Patients may pose written questions to their doctor. The patient's experience, including which program segments are viewed as well as the patient's interactions therewith are captured, documented and preserved.
    Type: Application
    Filed: April 10, 2003
    Publication date: November 20, 2003
    Applicant: Rightfield Solutions, LLC
    Inventor: David Sobel
  • Patent number: 6646509
    Abstract: Provided a method of reducing impedance variations in an electrical circuit structured and arranged for placement on an integrated circuit (IC) substrate. The method includes forming sets of parallel connected resistors, each set corresponding to one of the impedance devices on the IC. Each set also includes two or more parallel resistor paths, each resistor path including two or more cascaded resistors and has a total impedance value substantially equal to the predetermined impedance value of its corresponding impedance device. Finally, the method includes configuring the sets of parallel resistor paths to form an interdigital structure across the substrate when the electrical circuit is placed on the IC.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: November 11, 2003
    Assignee: Broadcom Corporation
    Inventor: David A. Sobel
  • Publication number: 20030137349
    Abstract: A system is provided for correcting start-up deficiencies in an amplifier. The system includes a comparing device configured to (i) receive a second circuit node voltage and a reference voltage as inputs, (ii) compare the received second circuit node voltage and the reference voltage, and (iii) produce a compensating voltage signal based upon the comparison. Next, an active device has a control terminal connected to an output port of the comparing device and is configured to receive the compensating voltage signal. The active device also includes an output terminal connected to the control terminal of the second active device, and a common terminal connected to a first circuit node. Another active device has a control terminal connected to the output port of the comparing device and is configured to receive the compensating voltage signal. The other active device also has an output terminal connected to the control terminal of the first active device, and a common terminal connected to the first circuit node.
    Type: Application
    Filed: January 9, 2003
    Publication date: July 24, 2003
    Applicant: Broadcom Corporation
    Inventor: David A. Sobel
  • Publication number: 20030137353
    Abstract: Provided is system for an improved programmable gain amplifier (PGA). The system includes an amplifier and a first gain control mechanism. The first gain control mechanism includes a circuit input port and is positioned along a feedback path of the amplifier. The first gain control mechanism is configured to (i) receive an input signal and (ii) moderate gains applied to the received input signal, the applied gains including gain values of greater than or equal to one. A second gain control mechanism is coupled to the first gain control mechanism and is integrated with a function of the amplifier. The second gain control mechanism (i) provides gain values of less than one and (ii) decreases a feedback factor of the amplifier when the gain values are provided having values of less than one.
    Type: Application
    Filed: July 31, 2002
    Publication date: July 24, 2003
    Applicant: Broadcom Corporation
    Inventor: David A. Sobel
  • Publication number: 20030140320
    Abstract: Provided a method of reducing impedance variations in an electrical circuit structured and arranged for placement on an integrated circuit (IC) substrate. The method includes forming sets of parallel connected resistors, each set corresponding to one of the impedance devices on the IC. Each set also includes two or more parallel resistor paths, each resistor path including two or more cascaded resistors and has a total impedance value substantially equal to the predetermined impedance value of its corresponding impedance device. Finally, the method includes configuring the sets of parallel resistor paths to form an interdigital structure across the substrate when the electrical circuit is placed on the IC.
    Type: Application
    Filed: July 31, 2002
    Publication date: July 24, 2003
    Applicant: Broadcom Corporation
    Inventor: David A. Sobel
  • Patent number: 6570448
    Abstract: A system is provided for correcting start-up deficiencies in an amplifier. The system includes a comparing device configured to (i) receive a second circuit node voltage and a reference voltage as inputs, (ii) compare the received second circuit node voltage and the reference voltage, and (iii) produce a compensating voltage signal based upon the comparison. Next, an active device has a control terminal connected to an output port of the comparing device and is configured to receive the compensating voltage signal. The active device also includes an output terminal connected to the control terminal of the second active device, and a common terminal connected to a first circuit node. Another active device has a control terminal connected to the output port of the comparing device and is configured to receive the compensating voltage signal. The other active device also has an output terminal connected to the control terminal of the first active device, and a common terminal connected to the first circuit node.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: May 27, 2003
    Assignee: Broadcom Corporation
    Inventor: David A. Sobel