Patents by Inventor Prakash Chacko

Prakash Chacko 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: 20240143306
    Abstract: A method and apparatus for incentivizing a user to update a device is provided herein. During operation, an update manager will determine a past history of performance problems specific to the device that needs updating. The device manager will also determine problems fixed with the update. A personalized message that mentions the past history of performance problems that are fixed with the update will be provided to the user along with a request to update the device.
    Type: Application
    Filed: October 31, 2022
    Publication date: May 2, 2024
    Inventors: JONATHAN CHAN, LOGESVARY POO GOPALASAMY, BENG KWANG TAN, SHINN WOEI OOI, REXY PRAKASH CHACKO, Anoop Sehgal PARAS RAM, Uvarajan Moorthy, Yei Lan Lee, NOR SABRINA Abu ZAKI
  • Publication number: 20060145764
    Abstract: A method (400) for controlling power and an amplifier and associated power control circuit (100) with a power amplifier (110) coupled through a current sensing resistor (Rsen) to a supply voltage line (vcc). There is also a current to voltage converter (120) having a converter output (135) and at least one converter input, the converter input being coupled to the supply voltage line (Vcc) of the power amplifier (110). A voltage reference providing circuitry (140) is coupled to a second input (152) of an integrator (150) that also has an integrator output (153) and a first input (151) coupled to the converter output (135) and a direct current biasing circuit (195) couples the integrator output ((153) to an amplifier input (111) of amplifier (110). The method (400) and circuit (100) use a time dependent pre-defined voltage characteristic supplied to the integrator (150).
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventors: V.C. Prakash Chacko, Narendra Kumar Aridas, Kiat Hoe Wong
  • Patent number: 6417739
    Abstract: A loop filter (4) having an adapt input (26), a normal input (24) and an output (23) is disclosed. Each of the inputs (24, 26) is connectable to mutually exclusively operable current sources to operate the loop filter (4) in an adapt and a normal mode respectively for controlling a voltage controlled oscillator (14) connectable to the output. The loop filter (4) includes a circuit (27) which when operated in the normal mode is connected between the normal input (24) and the output (23) to introduce a pole (P3) to a normal mode frequency response (32) of the loop filter (4). When switched to operate in the adapt mode the first circuit (27) becomes connected in series between the output (23) and a signal ground to introduce a zero to an adapt mode frequency response of the loop filter (4).
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: July 9, 2002
    Assignee: Motorola, Inc.
    Inventor: Prakash Chacko
  • Patent number: 5144264
    Abstract: A voltage control oscillator (400) includes a tank circuit (402) wihch includes a control input (118). The VCO (400) further includes a feedback section (106) which includes a transistor (108). The feedback circuit (106) further includes a feedback compensation circuit 420 which compensates the feedback ratio of the feedback circuit (106) over changes in frequency of operation in order to provide for a substantially constant open loop gain. The improved VCO (400) provides for fairly constant current drain over changes in frequency as well as lower power output variations and flatter Side Band Noise Ratio response over frequency.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: September 1, 1992
    Assignee: Motorola, Inc.
    Inventors: Thomas C. K. Chong, Prakash Chacko