Patents by Inventor Timothy P. Froehling

Timothy P. Froehling 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: 20170033828
    Abstract: A device includes an antenna, a transceiver, a radio frequency identification (RFID) tag, and a zero bias switch coupled to the antenna. The zero bias switch has a first path that couples the RFID tag to the antenna and isolates the RFID tag from the transceiver when the zero bias switch is in an unpowered state. A method includes selectively coupling an antenna to one of a radio frequency identification (RFID) tag or an RFID interrogator using a zero bias switch, wherein the zero bias switch has a first path that couples the RFID tag to the antenna and isolates the RFID tag from the RFID interrogator when the zero bias switch is in an unpowered state.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 2, 2017
    Inventors: Hong Zhao, Timothy P. Froehling
  • Publication number: 20080102770
    Abstract: A method and apparatus for delivering content wirelessly to a remote wireless device (103) includes withholding content delivery until a link ready acknowledgment has been received. A communication device (201), such as a mobile telephone, includes a client capable of delivering content. For example, an audio client (101) is configured to deliver audio content, which may include music or voice, to a user. When a wireless communication link (210) with a remote wireless device (103), such as a hand-free speakerphone device, is desired, the client requests the wireless communication link from an audio manager (102). The client then withholds content delivery until the audio manager (102) establishes the wireless communication link (210) and delivers a link ready acknowledgement. In so doing, the method and apparatus prevent lost audio.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: Timothy P. Froehling, Seang Y. Chau
  • Patent number: 6560298
    Abstract: A method (1400) of enabling automatic frequency control (AFC) concurrent with time alignment of information in a communication device includes a first step (1402) of providing a data stream to an AFC. A second step (1404) includes applying multiple frequency offsets to the data stream. The offsets are separated from each other by about ±2&pgr;/2m radians with m being the number of bits per symbol in the modulation system. A third step (1406) includes correlating each frequency offset signal with a predetermined symbol sequence until correlation is found. A fourth step (1408) includes coupling the correct data stream of the branch with the found correlation to an AFC logic circuit indicating AFC lock. A fifth step (1410) includes simultaneously supplying the correct data stream to the communication device along with the fourth step (1408) such that time alignment can take place concurrently with AFC in the communication device.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: May 6, 2003
    Assignee: Motorola, Inc.
    Inventors: Timothy P. Froehling, Louis J. Vannatta, Scott L. Chamberlain
  • Patent number: 6049532
    Abstract: A mobile station (102) has electrical circuitry (301) that operates to reduce power consumption. A synthesizer (318) is tuned so that a receiver (314) receives a home radio frequency (RF) signal during a receive slot (504) of a PCH subframe (209). A controller (310) detects if an upcoming subframe has an uplink requirement and if data from the home RF signal indicates that an idle condition exists. If the upcoming subframe does not have an uplink requirement, synthesizer (318) is tuned during a long idle slot (506) of PCH subframe (209) to measure signal strengths of two peripheral RF signals. If the idle condition does exist, electrical circuitry (301) is placed into a low power mode throughout a transmit slot (508), a receive slot (512), a long idle slot (514), and a transmit slot (516).
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: April 11, 2000
    Assignee: Motorola, Inc.
    Inventors: Scott A. Steele, Louis J. Vannatta, Timothy P. Froehling, William P. Alberth, Jr., Joseph F. Cramer, III
  • Patent number: 5280644
    Abstract: A frequency control circuit, and associated method, for a receiver operative to receive a TDMA signal transmitted by a transmitter in a TDMA communication system. A first frequency detector generates a first frequency control signal. A second frequency detector, comprised of a portion of a decision-directed demodulator, generates a second frequency control signal. The first frequency control signal is utilized to effectuate frequency control when a signal is continuously received by the receiver, such as times immediately subsequent to initial powering of the receiver as the receiver becomes synchronized with the TDMA signal transmitted thereto. Onces a receiver becomes synchronized to the transmitter, the receiver need only be powered during intermittent time periods when the TDMA signal is transmitted to the receiver.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: January 18, 1994
    Assignee: Motorola, Inc.
    Inventors: Louis J. Vannatta, Timothy P. Froehling