Patents by Inventor Yongbing Wan
Yongbing Wan 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: 8265220Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: GrantFiled: October 31, 2007Date of Patent: September 11, 2012Assignee: LG Electronics Inc.Inventors: Jaleh Komaili, Yongbing Wan
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Patent number: 8149904Abstract: Provided is a system and method for a modem including one or more processing paths. Also included is a number of interconnected modules sequentially arrayed along the one or more paths. Each module is configured to (i) process signals passed along the paths in accordance with the sequence and (ii) implement predetermined functions to perform the processing. Further, each of the modules has a particular degree of functional programmability and the degrees of functional programmability monotonically vary in accordance with the sequence.Type: GrantFiled: January 24, 2003Date of Patent: April 3, 2012Assignee: Broadcom CorporationInventors: Gregory H. Efland, Haixiang Liang, Kevin H. Peterson, Yuanjie Chen, Alan G. Corry, Nino P. Ferrario, Jeff Z. Guan, Meera Prahlad, Ilya Stomakhin, Yongbing Wan, Larry C. Yamano, Lin Yin, Gong-San Yu, George A. Papanicolaou
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Patent number: 7613270Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: GrantFiled: October 31, 2007Date of Patent: November 3, 2009Assignee: LG Electronics Inc.Inventors: Jaleh Komaili, Yongbing Wan
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Patent number: 7558359Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: GrantFiled: December 1, 2006Date of Patent: July 7, 2009Assignee: LG Electronics Inc.Inventors: Jaleh Komaili, Yongbing Wan
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Publication number: 20080059159Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: ApplicationFiled: October 31, 2007Publication date: March 6, 2008Inventors: Jaleh Komaili, Yongbing Wan
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Publication number: 20080049661Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: ApplicationFiled: October 31, 2007Publication date: February 28, 2008Inventors: Jaleh Komaili, Yongbing Wan
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Publication number: 20070116107Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: ApplicationFiled: December 1, 2006Publication date: May 24, 2007Inventors: Jaleh Komaili, Yongbing Wan
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Patent number: 7173944Abstract: A digital subscriber line (DSL) communication system that utilizes the high frequency band of a standard telephone line does not require the use of a plain old telephone service (POTS) splitter in the resident's home, which provided isolation between the POTS frequency band (0 to 4 kHz) and the DSL frequency band. A digital subscriber line modem utilizes either constant envelope modulation or quadrature amplitude modulation for outputting DSL signals upstream to a central office. When a telephone in the resident's home is detected as being off-hook, then the constant envelope modulation is used by the DSL modem in order to lessen the intermodulation product distortion that results in audible noise heard by a user of the telephone. When the telephone is on-hook, then another type of modulation, such as QAM, is used to maximize the upstream data rate capability in the DSL frequency band, since any noise generated by the QAM is not a problem due to the non-use of the POTS frequency band.Type: GrantFiled: April 11, 2000Date of Patent: February 6, 2007Assignee: Conexant Systems, Inc.Inventors: Kenneth D. Ko, David O. Anderton, Ismail I. Eldumiati, Steven A. Gronemeyer, Don L. Harmer, P. Michael Henderson, Joel D. Peshkin, Raphael Rahamim, Frederic M. Stubbe, John S. Walley, Kenneth S. Walley, Yongbing Wan, Edward S. Zuranski, Jamal Haque, Anthony A. Tzouris, Shrenik P. Patravali, Ganning Yang
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Patent number: 7164710Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: GrantFiled: April 16, 2002Date of Patent: January 16, 2007Assignee: LG Electronics Inc.Inventors: Jaleh Komaili, Yongbing Wan
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Patent number: 6693953Abstract: The present invention provides methods and apparatus for controlling power utilization in a wireless communication receiver. A representative system comprises a signal properties evaluation module, an analog to digital converter (ADC), and an analog to digital converter control module. The signal properties evaluation module evaluates the stability of a received signal, and provides an indication of the stability. The ADC control module responds to the signal properties evaluation module to select the precision of the ADC based upon the indication of the stability. The ADC has at least two modes of operation, comprising a first precision and a second precision, and is responsive to the signal properties evaluation module to operate in at least one of two modes based upon the stability. The ADC responds to the signal properties evaluation module so as to limit the amount of power consumed by the wireless communications device.Type: GrantFiled: September 30, 1998Date of Patent: February 17, 2004Assignee: Skyworks Solutions, Inc.Inventors: Earl C. Cox, David O. Anderton, Jaleh Komaili, Yongbing Wan, Scott Walley
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Patent number: 6680920Abstract: A power management system for a mobile station reduces standby mode processing by receiving and processing single time slots of a short paging channel. Each single time slot of a short paging channel includes a mobile station identifier which alerts a receiving mobile station that a pending telephone call or paging message may be directed to the mobile station. Once so alerted, the mobile station receives and processes full paging channels comprising four time slots to determine whether the mobile station is the intended recipient of the telephone call or paging message. If the mobile station determines that it is not the intended recipient, then the mobile station resumes receiving and processing single time slots of the short page channel. Processing fewer time slots of data for purposes of call detection conserves mobile station battery power.Type: GrantFiled: February 8, 2000Date of Patent: January 20, 2004Assignee: Skyworks Solutions, Inc.Inventor: Yongbing Wan
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Publication number: 20030210740Abstract: Provided is a system and method for a modem including one or more processing paths. Also included is a number of interconnected modules sequentially arrayed along the one or more paths. Each module is configured to (i) process signals passed along the paths in accordance with the sequence and (ii) implement predetermined functions to perform the processing. Further, each of the modules has a particular degree of functional programmability and the degrees of functional programmability monotonically vary in accordance with the sequence.Type: ApplicationFiled: January 24, 2003Publication date: November 13, 2003Inventors: Gregory H. Efland, Haixiang Liang, Kevin H. Peterson, Yuanjie Chen, Alan G. Corry, Nino P. Ferrario, Jeff Z. Guan, Meera Prahland, Ilya Stomakhin, Yongbing Wan, Larry C. Yamano, Lin Yin, Gong-San Yu, George A. Papanicolaou
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Patent number: 6567938Abstract: An improved encoding technique improves the error detection provided in conventional communication systems. Traditional encoding systems for communication systems often utilize channel-coding in the form of block-coding and convolutional encoding. Block-coding typically utilizes parity bits for error detection. These parity bits are typically placed as a block at the end of the data frame. The present invention provides an improved encoder and decoder which utilize parity bits placed within the data and spread within the data bits for higher reliability.Type: GrantFiled: January 16, 2001Date of Patent: May 20, 2003Assignee: Skyworks Solutions, Inc.Inventor: Yongbing Wan
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Publication number: 20030058929Abstract: The present invention provides a method and apparatus for adaptive processing in a communication system receiver. The adaptive processing facilitates power savings and permits enhanced performance when necessary. This extends a receiver's operation time in receivers that operate on batteries, such as in cordless telephones or cellular telephones. A receiver adopting the principles of the present invention evaluates the characteristics and dynamics of an incoming signal, and based on the quality of the incoming signal, adjusts various aspects of the receiver such as the on-time correlators and analog to digital converters, the timing circuits, the despread equalizers, and the combiner. If the receiver comprises a receiver operation in accordance with GSM, the receiver may cycle the MLSE detection algorithms or cross correlation may be done over fewer data symbols.Type: ApplicationFiled: September 30, 1998Publication date: March 27, 2003Inventors: EARL C. COX, DAVID O. ANDERTON, JALEH KOMAILI, YONGBING WAN, KENNETH S. WALLEY
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Patent number: 6539205Abstract: A method and apparatus for effectively monitoring quality of a traffic channel in a communication, and in response, modifying transmission coding or data transmission rates, or both, improves communication quality and increases data transfers rates in digital wireless communication systems. A channel quality estimator determines and evaluates the bit error rate (BER) of a signal on a control channel and estimates the quality of the traffic channel based on the quality of the control channel signal. Accordingly, the processing and control circuitry of either a mobile station or base station adjusts the error correction applied to traffic channel transmissions. The traffic channel data transmission rate may also be modified based on the control channel signal quality.Type: GrantFiled: March 23, 1998Date of Patent: March 25, 2003Assignee: Skyworks Solutions, Inc.Inventors: Yongbing Wan, Jaleh Komaili
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Patent number: 6529730Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: GrantFiled: May 15, 1998Date of Patent: March 4, 2003Assignee: Conexant Systems, INCInventors: Jaleh Komaili, Yongbing Wan
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Patent number: 6526286Abstract: A power management system for a mobile unit wherein the frequency of scanning a neighboring cell may be controlled. A mobile unit consumes power in standby mode by periodically scanning the base station in each neighboring cell to determine which base stations are providing a usable signal. When the signal provided by the mobile unit's servicing base station diminishes, the mobile unit informs the cellular network of the base stations providing usable signals to assist in the handover. By detecting the rate of change of the signal strength received from a base station, the mobile unit may change the scanning rate of each neighboring cell. Alternatively, the mobile unit can estimate the relative speed it is traveling through a cell. If traveling slowly through the cell or if the signal strength is not changing over time, the need for a rapid handover diminishes. The mobile unit may also increase the scanning rate if traveling rapidly through the cell.Type: GrantFiled: February 7, 2002Date of Patent: February 25, 2003Assignee: Skyworks Solutions Inc.Inventor: Yongbing Wan
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Publication number: 20030002446Abstract: The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission.Type: ApplicationFiled: April 16, 2002Publication date: January 2, 2003Inventors: Jaleh Komaili, Yongbing Wan
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Publication number: 20020147024Abstract: A power management system for a mobile unit wherein the frequency of scanning a neighboring cell may be controlled. A mobile unit consumes power in standby mode by periodically scanning the base station in each neighboring cell to determine which base stations are providing a usable signal. When the signal provided by the mobile unit's servicing base station diminishes, the mobile unit informs the cellular network of the base stations providing usable signals to assist in the handover. By detecting the rate of change of the signal strength received from a base station, the mobile unit may change the scanning rate of each neighboring cell. Alternatively, the mobile unit can estimate the relative speed it is traveling through a cell. If traveling slowly through the cell or if the signal strength is not changing over time, the need for a rapid handover diminishes. The mobile unit may also increase the scanning rate if traveling rapidly through the cell.Type: ApplicationFiled: February 7, 2002Publication date: October 10, 2002Inventor: Yongbing Wan
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Patent number: 6385460Abstract: A power management system for a mobile unit wherein the frequency of scanning a neighboring cell may be controlled. A mobile unit consumes power in standby mode by periodically scanning the base station in each neighboring cell to determine which base stations are providing a usable signal. When the signal provided by the mobile unit's servicing base station diminishes, the mobile unit informs the cellular network of the base stations providing usable signals to assist in the handover. By detecting the rate of change of the signal strength received from a base station, the mobile unit may change the scanning rate of each neighboring cell. Alternatively, the mobile unit can estimate the relative speed it is traveling through a cell. If traveling slowly through the cell or if the signal strength is not changing over time, the need for a rapid handover diminishes. The mobile unit may also increase the scanning rate if traveling rapidly through the cell.Type: GrantFiled: May 26, 1998Date of Patent: May 7, 2002Assignee: Conexant Systems, Inc.Inventor: Yongbing Wan