Patents by Inventor Richard F. Dean
Richard F. Dean 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).
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Patent number: 9026129Abstract: Systems and methods disclosed herein generate pseudo pilot signals including PN phase offsets corresponding to a plurality of pseudo base stations. The pseudo base stations are (1) a plurality of non-physical base stations, and/or (2) physical base stations outside the reception range of the mobile device. The pseudo pilot signals are combined with communication signals from a physical base station to form a series of composite signals. The composite signals are transmitted for reception by a wireless mobile device and are used to determine the location of the mobile device.Type: GrantFiled: December 19, 2007Date of Patent: May 5, 2015Assignee: QUALCOMM IncorporatedInventors: Richard F. Dean, Kenneth R. Baker
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Patent number: 8665774Abstract: The invention provides a mechanism for automatically setting reverse link gain or power for a repeater (120) used in a communication system (100) through the use of the reverse link power control of a built-in wireless communications device. By embedding a wireless communication device (430, 630, 700) inside the repeater and injecting reverse link signals of the embedded device into the reverse link of the repeater (124A, 124B), the gain of the repeater is maintained relatively constant. The embedded WCD can also be activated on a periodic basis to make calls and utilize reverse link power-control to calibrate or re-calibrate the gain of the repeater, making it a power-controlled repeater.Type: GrantFiled: April 8, 2011Date of Patent: March 4, 2014Assignee: QUALCOMM IncorporatedInventor: Richard F. Dean
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Publication number: 20110305172Abstract: The invention provides a mechanism for automatically setting reverse link gain or power for a repeater (120) used in a communication system (100) through the use of the reverse link power control of a built-in wireless communications device. By embedding a wireless communication device (430, 630, 700) inside the repeater and injecting reverse link signals of the embedded device into the reverse link of the repeater (124A, 124B), the gain of the repeater is maintained relatively constant. The embedded WCD can also be activated on a periodic basis to make calls and utilize reverse link power-control to calibrate or re-calibrate the gain of the repeater, making it a power-controlled repeater.Type: ApplicationFiled: April 8, 2011Publication date: December 15, 2011Applicant: QUALCOMM IncorporatedInventor: Richard F. Dean
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Patent number: 7924751Abstract: The invention provides a mechanism for automatically setting reverse link gain or power for a repeater (120) used in a communication system (100) through the use of the reverse link power control of a built-in wireless communications device. By embedding a wireless communication device (430, 630, 700) inside the repeater and injecting reverse link signals of the embedded device into the reverse link of the repeater (124A, 124B), the gain of the repeater is maintained relatively constant. The embedded WCD can also be activated on a periodic basis to make calls and utilize reverse link power-control to calibrate or re-calibrate the gain of the repeater, making it a power-controlled repeater.Type: GrantFiled: November 20, 2002Date of Patent: April 12, 2011Assignee: QUALCOMM IncorporatedInventor: Richard F. Dean
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Patent number: 7865159Abstract: An RF switch is used in the signal path to an amplifier, for example between a receiving antenna and an amplifier. The switch is used to alternately connect the amplifier between a normal signal source for the amplifier and a fixed load for calibration. The power difference between the two switch states at the output of the amplifier would then yield a calibrated measurement of a signal value, such as rise over thermal (RoT). The amount of time spent in the calibration position is maintained at a minimized level so as to reduce impact on the normal operation of the amplifier. The invention provides an ability to estimate traffic load in a repeater system based on RoT measurements of repeater reverse-link output power by determining a reverse link gain.Type: GrantFiled: November 2, 2006Date of Patent: January 4, 2011Assignee: Qualcomm IncorporatedInventor: Richard F. Dean
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Publication number: 20090312005Abstract: Wireless digital communications involving a mobile device are improved in troublesome locations to prolong a marginal mobile device connections and to avoid dropped calls by proactively improving signal-to-noise ratio. Signal to noise ratio may be increased by reducing the data transmission rate in a variety of ways. Such actions may be taken when current location of a mobile device is in a known troublesome location and/or a characteristic of the signal received by the mobile device is problematic. Similar actions may also be taken to conserve battery power when remaining battery charge drops below a preset criterion.Type: ApplicationFiled: June 16, 2008Publication date: December 17, 2009Inventors: Purandar MUKUNDAN, Richard F. DEAN
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Publication number: 20090163224Abstract: Systems and methods disclosed herein generate pseudo pilot signals including PN phase offsets corresponding to a plurality of pseudo base stations. The pseudo base stations are (1) a plurality of non-physical base stations, and/or (2) physical base stations outside the reception range of the mobile device. The pseudo pilot signals are combined with communication signals from a physical base station to form a series of composite signals. The composite signals are transmitted for reception by a wireless mobile device and are used to determine the location of the mobile device.Type: ApplicationFiled: December 19, 2007Publication date: June 25, 2009Applicant: Qualcomm IncorporatedInventors: Richard F. Dean, Kenneth R. Baker
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Publication number: 20040235417Abstract: A method and apparatus for detecting oscillation in a repeater system is disclosed. More particularly, in one embodiment, a wireless communication device is embedded in a repeater system and is configured to detect if the repeater system is in oscillation. A processor coupled to the WCD is configured to reduce the gain of the repeater system if the repeater system is in oscillation.Type: ApplicationFiled: February 24, 2004Publication date: November 25, 2004Inventor: Richard F. Dean
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Publication number: 20030123401Abstract: The invention provides a mechanism for automatically setting reverse link gain or power for a repeater (120) used in a communication system (100) through the use of the reverse link power control of a built-in wireless communications device. By embedding a wireless communication device (430, 630, 700) inside the repeater and injecting reverse link signals of the embedded device into the reverse link of the repeater (124A, 124B), the gain of the repeater is maintained relatively constant. The embedded WCD can also be activated on a periodic basis to make calls and utilize reverse link power-control to calibrate or re-calibrate the gain of the repeater, making it a power-controlled repeater.Type: ApplicationFiled: November 20, 2002Publication date: July 3, 2003Inventor: Richard F. Dean
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Patent number: 6201802Abstract: A base station timing analyzer measures the timing performance of a base station from within the base station coverage area without interruption or degradation of the system performance. The timing analyzer has a dummy signal generation mechanism that produces a dummy signal output based on a universal time input. An antenna couples a signal from an operating base station from a wireless link. A summer sums together the dummy signal and signal from the wireless link. A demodulation element receives the summed signal and searches for and demodulates each of the signals. A comparison unit compares the output of the demodulation element to determine the timing performance of the base station to provide an indication of the absolute time offset of the base station signal.Type: GrantFiled: August 29, 1997Date of Patent: March 13, 2001Assignee: Qualcomm Inc.Inventor: Richard F. Dean
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Patent number: 6108364Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.Type: GrantFiled: August 31, 1995Date of Patent: August 22, 2000Assignee: Qualcomm IncorporatedInventors: Lindsay A. Weaver, Jr., Franklin P. Antonio, Richard F. Dean
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Patent number: 5867763Abstract: The present invention is a method and apparatus for integrating a personal communication system with a cable television plant. A set of radio antenna devices (RAD) are connected to the cable plant. The RADs provide frequency conversion and power control of signal received from the cable plant for wireless transmission to the remote units. The RADs also provide power control and frequency conversion of wireless signals received from the remote units for transmission by the RADs onto the cable plant. In addition to the functions of standard base stations and centralized controller, the CATV base station must also compensate for gain variations in the cable plant. The downstream power control is regulated by a RAD reference signal which can be hidden within the CDMA signal for maximum efficiency. The upstream power control is regulated by an upstream gain reference signal which is individually transmitted by each RAD on the upstream link.Type: GrantFiled: February 8, 1996Date of Patent: February 2, 1999Assignee: Qualcomm IncorporatedInventors: Richard F. Dean, Lindsay A. Weaver, Jr., Charles E. Wheatley, III
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Patent number: 5839052Abstract: The present invention is a method and apparatus for integrating a personal communication system with a cable television plant. A set of radio antenna devices (RAD) are connected to the cable plant. The RADs provide frequency conversion and power control of signal received from the cable plant for wireless transmission to the remote units. The RADs also provide power control and frequency conversion of wireless signals received from the remote units for transmission by the RADs onto the cable plant. In addition to the functions of standard base stations and centralized controller, the CATV base station must also compensate for gain variations in the cable plant. The downstream power control is regulated by a RAD reference signal which can be hidden within the CDMA signal for maximum efficiency. The upstream power control is regulated by an upstream gain reference signal which is individually transmitted by each RAD on the upstream link.Type: GrantFiled: February 8, 1996Date of Patent: November 17, 1998Assignee: Qualcom IncorporatedInventors: Richard F. Dean, Lindsay A. Weaver, Jr., Charles E. Wheatley, III
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Patent number: 5602834Abstract: A linear coverage area antenna system for use within a CDMA communication system is described. In a preferred implementation, two linear coverage area antenna structures are positioned in parallel and coupled to a base station. Within the base station, a transmitter generates remote user directed spread spectrum signals, these signals being provided to the first and second linear coverage area antenna structures through an antenna interface. The antenna interface includes a time delay element for introducing a predetermined time delay between components of the remote user directed spread spectrum signals transmitted by the first and second linear coverage area antenna structures, respectively.Type: GrantFiled: June 7, 1995Date of Patent: February 11, 1997Assignee: QUALCOMM IncorporatedInventors: Richard F. Dean, Franklin P. Antonio
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Patent number: 5533011Abstract: A distributed antenna system is utilized in a system for providing multipath signals which facilitate signal diversity for enhanced system performance. Each node of the antenna comprises more than one antenna. Each antenna at a common node provides a path having a different delay to the base station.Type: GrantFiled: December 23, 1994Date of Patent: July 2, 1996Assignee: Qualcomm IncorporatedInventors: Richard F. Dean, Franklin P. Antonio, Klein S. Gilhousen, Charles E. Wheatley, III
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Patent number: 5513176Abstract: A distributed antenna system is utilized in a system for providing multipath signals which facilitate signal diversity for enhanced system performance. Each node of the antenna comprises more than one antenna. Each antenna at a common node provides a path having a different delay to the base station.Type: GrantFiled: August 27, 1993Date of Patent: April 30, 1996Assignee: Qualcomm IncorporatedInventors: Richard F. Dean, Franklin P. Antonio, Klein S. Gilhousen, Charles E. Wheatley, III