Patents by Inventor Kenneth Y Tang

Kenneth Y Tang 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).

  • Patent number: 8374129
    Abstract: A high bandwidth, low latency middle-mile core communications network providing low-cost and high-speed communications among the users of the network. Embodiments of the invention include a number of network access points located at a number of spaced apart sites. At least some of these network access points in the network are in communication with each other via millimeter radio links with microwave backup links. In preferred embodiments the millimeter radio links include two millimeter radios, one transmitting in the frequency range of 71-76 GHz and receiving in the frequency range if 81 to 86 GHz and the other radio transmitting in the frequency range of 81-86 GHz and receiving in the frequency range if 71 to 76 GHz.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: February 12, 2013
    Assignee: Trex Enterprises Corp.
    Inventors: Brett Lewis, John Lovberg, Tzu-Chiang Hsieh, Kenneth Y. Tang, Robert Fein
  • Publication number: 20120135724
    Abstract: A high bandwidth, low latency middle-mile core communications network providing low-cost and high-speed communications among the users of the network. Embodiments of the invention include a number of network access points located at a number of spaced apart sites. At least some of these network access points in the network are in communication with each other via millimeter radio links with microwave backup links. In preferred embodiments the millimeter radio links include two millimeter radios, one transmitting in the frequency range of 71-76 GHz and receiving in the frequency range if 81 to 86 GHz and the other radio transmitting in the frequency range of 81-86 GHz and receiving in the frequency range if 71 to 76 GHz. In these preferred embodiments each millimeter wave radio is equipped with an antenna designed to produce a millimeter wave beam with an angular spread of less than two degrees. A high-speed switch is located at each network access point.
    Type: Application
    Filed: December 28, 2010
    Publication date: May 31, 2012
    Inventors: Brett Lewis, John Lovberg, Tzu-Chiang Hsieh, Kenneth Y. Tang, Robert Fein
  • Publication number: 20070252688
    Abstract: A disaster alert system and disaster alert devices for use in the system. Each disaster alert device includes a radio receiver, and a processor programmed to monitor radio transmissions from one or more central stations for disaster alerts directed to the location of the disaster alert device. Each alert device also includes an audio unit to alert personnel located at the site of the device to the precise nature of the disaster. The disaster alert devices are pre-programmed with information identifying the precise use location of the warning device. This use location information includes latitude and longitude of the use location and may also include other location information such as street address and zip code.
    Type: Application
    Filed: June 23, 2006
    Publication date: November 1, 2007
    Inventors: Douglas C. Eisold, Brent Perkins, Paul A. Johnson, Paul Fairchild, Kenneth Y. Tang
  • Patent number: 7131446
    Abstract: A light-triggered tattoo process. A strong absorber of light energy and tattoo material are sandwiched under pressure between a skin region and a transparent window. Short pulses of light, at frequencies strongly absorbed by the strong absorber, illuminates the strong absorber through the window creating micro-explosions in the strong absorber that drive particles of the tattoo material into the skin region producing a tattoo.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: November 7, 2006
    Inventors: Kenneth Y. Tang, Allen M. Hunter, II, Betty W. Tang
  • Patent number: 7062293
    Abstract: A wireless cellular communication system in which groups of cellular base stations communicate with a central office via a narrow-band millimeter wave trunk line. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same millimeter wave spectrum. In a preferred embodiment the trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A large number of base stations are each allocated a few MHz portion of a 900 MHz bandwidth of the millimeter wave trunk line. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: June 13, 2006
    Assignee: Trex Enterprises Corp
    Inventors: Paul A. Johnson, John A Lovberg, Kenneth Y Tang, Randall Olsen, Vladimir Kolinko
  • Patent number: 6714800
    Abstract: A wireless cellular communication system in which groups of cellular base stations communicate with a central office via a narrow-band millimeter wave trunk line. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same millimeter wave spectrum. In a preferred embodiment the trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A large number of base stations are each allocated a few MHz portion of a 900 MHz bandwidth of the millimeter wave trunk line. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: March 30, 2004
    Assignee: Trex Enterprises Corporation
    Inventors: Paul Johnson, John Lovberg, Kenneth Y. Tang, Randall Olsen, Vladimir Kolinko
  • Patent number: 6665546
    Abstract: A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is combined with an Ethernet network to provide high speed digital data communication among a large number of users. In a preferred embodiment a trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: December 16, 2003
    Assignee: Trex Enterprises Corporation
    Inventors: Louis Slaughter, Jon Hill, Thomas Lambert, Huan Nguyen, Randall Olsen, John Lovberg, Kenneth Y. Tang, Vladimir Kolinko
  • Patent number: 6611696
    Abstract: An apparatus and method for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link. A narrow band oscillator power source is substituted for the signal transmitting electronics associated with a first antenna and a power detector is substituted for the signal receiving electronics associated with a second antenna. In preferred embodiments after a first alignment procedure is performed, the procedure is repeated with an oscillator power source connected to the second antenna and a power detector connected to the first antenna. In other preferred embodiments the antennas are pre-aligned using a signaling mirror or a narrow beam search light or laser. After the antennas are aligned the transceiver electronics are reconnected. In preferred embodiments the communication link operates within the 92 to 95 GHz portion of the millimeter spectrum and provides data transmission rates in excess of 155 Mbps.
    Type: Grant
    Filed: January 5, 2002
    Date of Patent: August 26, 2003
    Assignee: Trex Enterprises Corporation
    Inventors: Richard Chedester, Paul Johnson, Thomas Lambert, Randall B. Olsen, John Lovberg, Kenneth Y. Tang, Vladimir Kolinko, George Houghton
  • Patent number: 6587699
    Abstract: Equipment and methods for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link and keeping them aligned. Each of two communicating antennas is equipped with a telescopic camera connected to a processor programmed to recognize landscape images. The processors are programmed to remember the pattern of the landscape as it appears when the antennas are aligned. Each of the cameras then view the landscape periodically or continuously and if the landscape in view changes by more than a predetermined amount a signal is provided to indicate a misalignment. An operator can then take corrective action or alternatively the antenna system can be configured for remote or automatic realignment based of feedback from the camera.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: July 1, 2003
    Assignee: Trex Enterprises Corporation
    Inventors: Randall B. Olsen, Louis Slaughter, John Lovberg, Kenneth Y. Tang, Vladimir Kolinko, Paul Johnson
  • Patent number: 6556836
    Abstract: A point-to-point, wireless, millimeter wave communications link providing data transmission rates of over 1 billion bits per second (more than 1 Gbps) at ranges of several miles during normal weather conditions. In a preferred embodiment a communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing divergence of less than 10−4 steradians so that an almost unlimited number of transceivers can use the same spectrum. In a preferred embodiment the first and second spectral ranges are 92.3-93.2 GHz and 94.1-95.0 GHz. During very bad weather conditions this data link will not provide a 10−10 bit-error rate and 99.999% availability.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: April 29, 2003
    Assignee: Trex Enterprises Corporation
    Inventors: John Lovberg, Kenneth Y. Tang, Randall Olsen, Vladimir Kolinko
  • Publication number: 20030027586
    Abstract: A point-to-point, wireless, millimeter wave communications links equipped with tracking antennas to maintain pencil beam contact between the links. In a preferred embodiment the communication links operate within the 92 to 95 GHz portion of the millimeter spectrum and provides data transmission rates in excess of 155 Mbps. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum. In a preferred embodiment the first and second spectral ranges are 92.3-93.2 GHz and 94.1-95.0 GHz and the half power beam width is about 0.36 degrees or less.
    Type: Application
    Filed: October 25, 2001
    Publication date: February 6, 2003
    Inventors: Paul Johnson, Randall Olsen, John Lovberg, Kenneth Y. Tang, George Houghton
  • Publication number: 20030022694
    Abstract: A wireless cellular communication system in which cellular base stations utilize multi-beam antenna to communicate with a large number of users. Each of the base station beams is a narrow beam of less than 10 degrees permitting reuse of available spectrum many times. A preferred antenna is described which broadcasts about 12 simultaneous beams, each about 5 degree, the 12 beams together covering a fan arc of about 60 degrees with the beams overlapping somewhat but interference is avoided by having adjacent beams broadcast at different frequencies within an authorized broadcast bandwidth. Six antennae mounted in a hexagonal manner thus cover a 360-degree azimuthal range. Preferably, users of the system communicate with the base station using a single narrow beam antenna directed at the base station.
    Type: Application
    Filed: September 28, 2001
    Publication date: January 30, 2003
    Inventors: Randall Olsen, Chester Phillips, John Lovberg, Kenneth Y. Tang, Vladimir Kolinko
  • Publication number: 20020187769
    Abstract: A wireless cellular communication system in which groups of cellular base stations communicate with a central office via a narrow-band millimeter wave trunk line. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same millimeter wave spectrum. In a preferred embodiment the trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A large number of base stations are each allocated a few MHz portion of a 900 MHz bandwidth of the millimeter wave trunk line. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth.
    Type: Application
    Filed: September 14, 2001
    Publication date: December 12, 2002
    Inventors: Paul Johnson, John Lovberg, Kenneth Y. Tang, Randall Olsen, Vladimir Kolinko
  • Publication number: 20020187754
    Abstract: A modulator for high data rate communication at frequencies greater than 50 GHz and at data rates of about 1.25 Gbps or greater. The modulator includes a resonant LC circuit including a diode which is back-biased for “off” (i.e., no transmit) and forward biased for “on” (or transmit). In preferred embodiments the modulator is a part of high performance transceivers for wireless, millimeter wave communications links. A preferred embodiment provides a communication link of more than eight miles which operates within the 71 to 76 GHz portion of the millimeter spectrum and provides data transmission rates of 1.25 Gbps with bit error rates of less than 10−10. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth.
    Type: Application
    Filed: April 23, 2002
    Publication date: December 12, 2002
    Inventors: Richard Chedester, Randall B. Olsen, Vladimir Kolinko, John Lovberg, Kenneth Y. Tang
  • Publication number: 20020177405
    Abstract: An apparatus and method for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link. A narrow band oscillator power source is substituted for the signal transmitting electronics associated with a first antenna and a power detector is substituted for the signal receiving electronics of associated with a second antenna. In preferred embodiments after a first alignment procedure is performed, the procedure is repeated with an oscillator power source connected to the second antenna and a power detector connected to the first antenna. In other preferred embodiments the antennas are pre-aligned using a signaling mirror or a narrow beam search light or laser. After the antennas are aligned the transceiver electronics are reconnected. In preferred embodiments communication link operates within the 92 to 95 GHz portion of the millimeter spectrum and provides data transmission rates in excess of 155 Mbps.
    Type: Application
    Filed: January 5, 2002
    Publication date: November 28, 2002
    Inventors: Richard Chedester, Paul Johnson, Thomas Lambert, Randall B. Olsen, John Lovberg, Kenneth Y. Tang, Vladimir Kolinko, George Houghton
  • Publication number: 20020176139
    Abstract: A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions to connect a local communication network through a SONET aggregation unit to a high speed fiber-optics network. In a preferred embodiment a trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum.
    Type: Application
    Filed: December 18, 2001
    Publication date: November 28, 2002
    Inventors: Louis Slaughter, Randall Olsen, Chester Phillips, Paul Johnson, John Lovberg, Kenneth Y. Tang, George Houghton, Vladimir Kolinko, Ryan Mooney
  • Publication number: 20020164946
    Abstract: A communication network including a point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps. This link is combined with a local network which includes at least one multi-beam antenna to provide high speed digital data communication for multiple users. In preferred embodiments the network also includes Ethernet service to additional users. In these preferred embodiments many or most of these multiple users are temporary users such as participants at a conference. In a preferred embodiment, a trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth.
    Type: Application
    Filed: December 1, 2001
    Publication date: November 7, 2002
    Inventors: Randell Olsen, Louis Slaughter, Chester Phillips, Paul Johnson, John Lovberg, Kenneth Y. Tang, George Houghton, Vladimir Kolinko
  • Publication number: 20020164957
    Abstract: A point-to-point, wireless, millimeter wave communications link providing data transmission rates of over 1 billion bits per second (more than 1 Gbps) at ranges of several miles during normal weather conditions. In a preferred embodiment a communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing divergence of less than 10−4 steradians so that an almost unlimited number of transceivers can use the same spectrum. In a preferred embodiment the first and second spectral ranges are 92.3-93.2 GHz and 94.1-95.0 GHz. During very bad weather conditions this data link will not provide a 10−10 bit-error rate and 99.999% availability.
    Type: Application
    Filed: May 2, 2001
    Publication date: November 7, 2002
    Inventors: John Lovberg, Kenneth Y. Tang, Randall Olsen, Vladimir Kolinko
  • Publication number: 20020165001
    Abstract: A point-to-point, wireless, millimeter wave communications links equipped with tracking antennas to maintain pencil beam contact between the links. In a preferred embodiment the antennas are flat panel tracking antennas and the communication links operate within the 92 to 95 GHz portion of the millimeter spectrum and provides data transmission rates in excess of 155 Mbps. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum. In a preferred embodiment the first and second spectral ranges are 92.3-93.2 GHz and 94.1-95.0 GHz and the half power beam width is about 0.36 degrees or less.
    Type: Application
    Filed: October 30, 2001
    Publication date: November 7, 2002
    Inventors: Chester Phillips, Paul Johnson, Randall Olsen, John Lovberg, Kenneth Y. Tang, George Houghton, Vladimir Kolinko
  • Publication number: 20020164951
    Abstract: A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is combined with an Ethernet network to provide high speed digital data communication among a large number of users. In a preferred embodiment a trunk line communication link operates within the 92 to 95 GHz portion of the millimeter spectrum. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum.
    Type: Application
    Filed: June 14, 2001
    Publication date: November 7, 2002
    Inventors: Louis Slaughter, Jon Hill, Thomas Lambert, Huan Nguyen, Randall Olsen, John Lovberg, Kenneth Y. Tang, Vladimir Kolinko