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公开(公告)号：HK1038260A1
公开(公告)日：2002-03-08
申请号：HK01109039
申请日：2001-12-24
Applicant: QUALCOMM INC
Inventor： ZOU QIUZHEN , SIH GILBERT C , EDMONSTON BRIAN S
IPC: G01S1/00 , G01S5/00 , G01S19/09 , G01S19/23 , G01S19/24 , G01S19/25 , G01S19/29 , G01S19/30 , G01S19/46 , H04Q7/34 , H04Q7/38 , G01S
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. In one embodiment the invention comprises a method in a subscriber unit (10) for performing position location in a CDMA wireless communications system having a base station (12), the method comprising: receiving a position location request containing aiding information from the base station (12) over a first receive frequency; in response to the position location request, tuning a receiver (52, 54, 102, 104) of the subscriber unit (10) away from the first receive frequency to a position location frequency in order to receive position location information; and receiving information over the position location frequency and using the received information to perform a position location procedure, the method being characterized by: including data transition boundary information in the aiding information.
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公开(公告)号：AT209837T
公开(公告)日：2001-12-15
申请号：AT93923128
申请日：1993-09-24
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C
IPC: H04M1/60 , G10L19/012 , H04B3/23 , H04M9/08
Abstract: An echo canceller and method for cancelling in a return channel signal an echoed receive channel signal where the echoed receive channel signal is combined by an echo channel with an input return channel signal. The echo canceller has a first filter which generates first filter coefficients, generates a first echo estimate signal with the first filter coefficients, and updates the first filter coefficients in response to a first filter control signal. A first summer subtracts the first echo estimate signal from a combined return channel and echo receive channel signal to generate a first echo residual signal. A second filter generates second filter coefficients, generates a second echo estimate signal with the second filter coefficients, and updates the second filter coefficients in response to a second filter control signal. A second summer subtracts the second echo estimate signal from the combined signal to generate a second echo residual signal, and provides upon the return channel the second echo residual signal. A control unit determines from the receive channel signal, the combined signal, and the first and second echo residual signals, one of a plurality of control states wherein a first control state is indicative of a receive channel signal above a first predetermined energy level, wherein when the control unit is in the first control state it generates the first control signal and generates the second control signal when at least one of a first energy ratio of the first echo residual signal and the combined signal and a second energy ratio of the second echo residual signal and the combined signal exceed a predetermined level.
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公开(公告)号：ID29846A
公开(公告)日：2001-10-18
申请号：ID20010804
申请日：1999-09-03
Applicant: QUALCOMM INC
Inventor： KANG INYUP , SIH GILBERT C , ZOU QIUZHEN
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location comprising the steps of receiving signal samples, generating a coarse acquisition sequence, rotating the coarse acquisition sequence yielding a rotated coarse acquisition sequence, and applying the rotated coarse acquisition sequence to the signal samples at a set of time offsets yielding correlated output data.
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公开(公告)号：CA2400647A1
公开(公告)日：2001-08-30
申请号：CA2400647
申请日：2001-02-23
Applicant: QUALCOMM INC
Inventor： HSU DE D , SIH GILBERT C , CHEN XUFENG
Abstract: Two multiply-accumulate units are coupled together so that the computation (B*C)+(D*E) can be completed in one cycle. An adder (216) adds together the products of the two multipliers (206), (208). The sum is applied to the firs t accumulator (220). Preferably, the second product is also applied to the second accumulator (222), and a multiplexer (218) applies either a zero or t he second product to the adder (216). If two unrelated computations are to be executed simultaneously, then the zero is applied, and the output of the second accumulator is fed back to the register file (PI2). If a single (B*C) + (D*E) computation is to be executed, then the second product is applied to t he adder, and the output of the second accumulator is disregarded.
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公开(公告)号：ID28901A
公开(公告)日：2001-07-12
申请号：ID20010803
申请日：1999-09-02
Applicant: QUALCOMM INC
Inventor： GLAZKO SERGUEI A , SIH GILBERT C , QIUZHEN ZOU
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location including the steps of receiving a set of higher resolution sample data at a resolution interval, accumulating said higher resolution sample data over a chip interval yielding accumulation sums, and correlating said accumulation sums with a correlation code at a set of offsets which are separated by said resolution interval.
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Patent Agency Ranking
公开(公告)号：EA001602B1
公开(公告)日：2001-06-25
申请号：EA199900457
申请日：1997-11-13
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , JOHN JONNY K
Abstract: Способи устройстводляобеспечениямежсоединенияцифровойрадиотелефоннойсистемы, совместимойсостандартнымианалоговымипроводнымителефонамии аналоговымипроводнымифаксимильнымиаппаратами. Вовремятелефонноговызовадетекторфаксимильногосообщения (11) проверяетпоступающиеданныенапредметобнаружениясигналовфаксимильногосообщения. Приобнаружениифаксимильногосообщенияпроцессор (12) данныхпереключаетсяс режимаобработкиречевыхданныхнаобработкуданныхфаксимильногосообщения. Приэтомнаудалённуюстанциюнаправляютсигнал, уведомляющийеёо необходимостиобрабатыватьданныекакфаксимильныеданные, анекакречевые. Детектор (11) факсимильногосообщениядетектируетвводнуючастьсообщения V.21, имеющуюсяв каждомвызовефаксимильногосообщения. ЭнергиюизмеряютнаобеихчастотахсигналовДПЧМн. Решениепринимаютнаосновеанализаэтихэнергийи обнаруженияконкретногошаблона, которыйповторяетсядостаточноечислораз.
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公开(公告)号：ID28458A
公开(公告)日：2001-05-24
申请号：ID20010800
申请日：1999-09-03
Applicant: QUALCOMM INC
Inventor： GARDNER WILLIAM , AGRAWAL AVNEESH , SIH GILBERT C , ZOU QIUZHEN , KANG INYUP
IPC: G01S19/30 , G01S1/00 , G01S5/00 , G01S5/14 , G01S19/23 , G01S19/24 , G01S19/25 , G01S19/29 , G01S19/37 , H04Q7/34 , H04Q7/38 , G01S1/04
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment comprises a method for performing position location in a wireless communication system using a set of signals transmitted from a set of satellites including the steps of receiving signal samples, rotating an acquisition code by a first rotation amount yielding a rotated acquisition code, despreading said signal samples using rotated acquisition code yielding despread data, accumulating said despread data over a first duration yielding partially accumulated data, rotating said partially accumulated data by a second rotation amount yielding rotated data and accumulating said rotated data.
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公开(公告)号：NO309835B1
公开(公告)日：2001-04-02
申请号：NO941904
申请日：1994-05-20
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C
IPC: G10L19/012 , H04M1/60 , H04B3/23 , H04M9/08
Abstract: An echo canceller and method for cancelling in a return channel signal an echoed receive channel signal where the echoed receive channel signal is combined by an echo channel with an input return channel signal. The echo canceller has a first filter which generates first filter coefficients, generates a first echo estimate signal with the first filter coefficients, and updates the first filter coefficients in response to a first filter control signal. A first summer subtracts the first echo estimate signal from a combined return channel and echo receive channel signal to generate a first echo residual signal. A second filter generates second filter coefficients, generates a second echo estimate signal with the second filter coefficients, and updates the second filter coefficients in response to a second filter control signal. A second summer subtracts the second echo estimate signal from the combined signal to generate a second echo residual signal, and provides upon the return channel the second echo residual signal. A control unit determines from the receive channel signal, the combined signal, and the first and second echo residual signals, one of a plurality of control states wherein a first control state is indicative of a receive channel signal above a first predetermined energy level, wherein when the control unit is in the first control state it generates the first control signal and generates the second control signal when at least one of a first energy ratio of the first echo residual signal and the combined signal and a second energy ratio of the second echo residual signal and the combined signal exceed a predetermined level.
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公开(公告)号：FI20010417A
公开(公告)日：2001-03-02
申请号：FI20010417
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： KANG INYUP , SIH GILBERT C , ZOU QIUZHEN
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location comprising the steps of receiving signal samples, generating a coarse acquisition sequence, rotating the coarse acquisition sequence yielding a rotated coarse acquisition sequence, and applying the rotated coarse acquisition sequence to the signal samples at a set of time offsets yielding correlated output data.
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公开(公告)号：BR9713059A
公开(公告)日：2000-04-11
申请号：BR9713059
申请日：1997-11-13
Applicant: QUALCOMM INC
Inventor： SIH GILBERT C , JOHN JOHNNY K
Abstract: A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line telephones and analog wire line fax machines is disclosed. During a telephone call, a fax detector (11) monitors the incoming data for fax signals. If a fax is detected, the data processor (12) switches from processing the data as if it were voice to processing it as fax. In addition, the remote station is sent a signal notifying it to process the data as fax rather than voice. The fax detector (11) operates by detecting the preamble of a V.21 message, present at the beginning of every fax call. Energy is measured in both frequencies of the BFSK signals. A decision is made by analyzing these energies and locating a specific pattern which repeats itself a sufficient number of times.
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