Patents by Inventor Arthur Woo

Arthur Woo 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: 20060236334
    Abstract: Uplink signaling for controlling a plurality of decoders at a remote site. An uplink has a control server for controlling a storage system of the decoders at the remote site. The control server of the uplink controls the storage system by injecting at least one global control stream multiplexed with a transport stream. The transport multiplexed with the global control stream is formed at the uplink for controlling the decoders simultaneously.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 19, 2006
    Inventors: Alexander Luccisano, Wayne Sheldrick, Keith Gammie, Arthur Woo, Brian Crookes
  • Publication number: 20060236335
    Abstract: A storage control system for a decoder. A decoder with a hardware platform for receiving and decoding coded data and a storage system for temporarily holding the decoded data from the hardware platform. A transport stream containing a global control data stream is used to manage the storage system. The global control data stream has an acquisition table (ACT) for providing a schedule of contents to be recorded, a playout control table (PCT) for providing a schedule of content that is to be played out by the decoder, and a content control table (CCT) for listing content that exists on the decoders.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 19, 2006
    Inventors: Alexander Luccisano, Wayne Sheldrick, Keith Gammie, Arthur Woo
  • Publication number: 20050195105
    Abstract: A hybrid navigation satellite receiver and mobile telephone uses only two crystal oscillators. One that operates a master clock around 27-MHz and that consumes milliwatts of power. The other oscillator consumes only microwatts of power and operates continuously on battery power at about 32-KHz. Only the second, low frequency oscillator is kept running during power “off”. On power “restart”, a real-time-clock counter is consulted to cause an estimate of the GPS system time to be regenerated and supplied to the GPS-DSP to quicken its initialization. The master clock is GPS-calibrated, and the accurate clock is used to drive NCO's for the mobile telephone part and host CPU.
    Type: Application
    Filed: April 20, 2005
    Publication date: September 8, 2005
    Inventors: Paul McBurney, Arthur Woo, France Rode
  • Patent number: 5479351
    Abstract: A GPS receiver comprises a data output port for communicating time code information formatted according to standards published by the Society of Motion Picture and Television Engineer (SMPTE). Such time code information is input to independent sound, film and video recorders at a performance event to create tracks on each recording for re-synchronizing the pictures and sounds in post-performance editing.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: December 26, 1995
    Assignee: Trimble Navigation Limited
    Inventors: Arthur Woo, David S. Sprague
  • Patent number: 5450344
    Abstract: A GPS receiver comprises a data input/output port for communication of datum-less position fixes in an earth-centered, earth-fixed (ECEF) coordinate style to avoid the errors associated with not communicating the datum choice with latitude longitude data communication formats.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: September 12, 1995
    Assignee: Trimble Navigation Limited
    Inventors: Arthur Woo, David S. Sprague
  • Patent number: 5422816
    Abstract: A data/voice modem embodiment of the present invention comprises an asynchronous-to-synchronous data converter for interface with a GPS receiver, a minimum space keyed modem, and a continuous tone controlled sub-audible squelch controller that modulates a radio transceiver interface with a discrete tone such that both voice and data may share a common radio channel. The data/voice modem periodically keys-up the radio transmitter through its interface and transmits a packet of information that contains user position and velocity obtained through the GPS transceiver interface and adds a user identification code and time tag. Incoming message packets from the radio transceiver that are sent from other similarly equipped mobile units are used to supply individual network member absolute positions and velocities, and this information is stored by user identification number as goal or waypoint equivalents.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: June 6, 1995
    Assignee: Trimble Navigation Limited
    Inventors: David S. Sprague, Arthur Woo
  • Patent number: 5422814
    Abstract: An embodiment of the present invention comprises a GPS receiver including a conversion table memory index for storing latitude-longitude lookup conversions to standardized map coordinates and scale factors.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: June 6, 1995
    Assignee: Trimble Navigation Limited
    Inventors: David S. Sprague, Anil Tiwari, Arthur Woo
  • Patent number: 5270809
    Abstract: A method for transmitting information over a communication network between a population of remote terminals and a central location having a capacity of simultaneously communicating with a predetermined number of remote terminals in the population. A first time period is fixed during which every remote terminal may initiate one attempt to communicate with the central location over the communication network. Respective times within the first time period are established at which each of the remote terminals will initiate its attempt to communicate with the central location. A number of the remote terminals which successfully communicate with the central location to transmit information therebetween is monitored. The first time period is then decreased to a second time period if the number of remote terminals which successfully communicate with the central location is less than the capacity of the central location.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: December 14, 1993
    Assignee: Scientific-Atlanta
    Inventors: Keith Gammie, Wayne Sheldrick, Arthur Woo, Cameron Bates
  • Patent number: 5237610
    Abstract: A decoder for descrambling encoded satellite transmissions comprises an internal security module and a resplaceable security module. The program signal is scrambled with a key and then the key itself is twice-encrypted and multiplexed with the scrambled program signal. The key is first encrypted with a first secret serial number (SSN.sub.1) which is assigned to a given replaceable security module. The key is then encrypted with a second secret serial number (SSN.sub.2) which is assigned to a given decoder. The decoder performs a first key decryption using the second secret serial number (SSN.sub.2) stored within the decoder. The partially decrypted key is then further decrypted by the replaceable security module using the first secret serial number (SSN.sub.1) stored within the replaceable security module. The decoder then descrambles the program using the twice-decrypted key. The replaceable security module can be replaced, allowing the security system to be upgraded or changed following a system breach.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: August 17, 1993
    Assignee: Scientific-Atlanta, Inc.
    Inventors: Keith Gammie, Robert K. Yoneda, Arthur Woo, Wayne Sheldrick