公开(公告)号：HK1066644A1

公开(公告)日：2005-03-24

申请号：HK04109552

申请日：2004-12-02

Applicant: QUALCOMM INC

Inventor： TAO LI T ,  HOLENSTEIN CHRISTIAN ,  INYUP KANG I ,  WALKER BRETT C ,  PETERZELL PAUL E ,  CHALLA RAGHU ,  SEVERSON MATTHEW L

IPC: H03G1/00 ,  H03D20090101 ,  H03G20090101 ,  H03G3/20 ,  H03G3/30 ,  H04B20090101 ,  H04L27/22 ,  H04L27/38

Abstract: An apparatus and method in a wireless communication system, the apparatus comprising: first means for amplifying a received signal; means for cancelling a DC offset in the amplified signal; second means for digitally amplifying the DC offset cancelled signal; and means for measuring the digitally amplified signal and to control the gains of the first and second amplifying means.

公开(公告)号：MY117285A

公开(公告)日：2004-06-30

申请号：MYPI9503874

申请日：1995-12-14

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  WHEATLEY CHARLES E III ,  KORNFELD RICHARD K ,  WEILAND ANA L

IPC: H04B1/06 ,  H04B1/10 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00

Abstract: THE METHOD AND APPARATUS OF THE PRESENT INVENTION IMPROVE THE IMMUNITY TO INTERFERENCE OF A RADIO RECEIVER. THE POWER LEVEL OF A RECEIVED SIGNAL IS DETECTED. IF THE POWER LEVEL MEETS OR EXCEEDS A PREDETERMINED POWER THRESHOLD, THE LOW NOISE AMPLIFIER (703) IS BY-PASSED (730), THUS INCREASING THE INTERCEPT POINT OF THE RECEIVER COMPONENTS. ALTERNATIVE EMBODIMENTS INCLUDE THE USE OF AN RF POWER DETECTOR (105) TO CONTROL THE FRON-END GAIN (110) AS A FUNCTION OF JAMMER POWER. IN LIEU OF A SWITCHABLE RF GAIN BLOCK (730), SEVERAL METHODS OF CONTINUOUS GAIN CONTROL ARE PROPOSED. CONTINUOUS GAIN CONTROL ALLOWS THE INTERFERENCE SUPPRESSION AND SENSITIVITY OF THE RECEIVER TO BE ADJUSTED AT LOWER SIGNAL LEVELS THAN THE SWITCHABLE GAIN BLOCK. A METHOD OF THE PRESENT INVENTION ADJUSTS THE INPUT GAIN BY A PREDETERMINED AMOUNT (1601). THE RECEIVER PROCESSING MEASURES THE GAIN CHANGE IN THE IF SIGNAL POWER (1605). IF THE CHANGE IS LESS THAN THE PREDETERMINED AMOUNT (1610), THE CDMA SIGNAL AND JAMMERS ARE BELOW THE NOISE FLOOR AND, THEREFORE, THE GAIN IS INCREASED (1615). IF THE IF SIGNAL POWER CHANGE IS GREATER THAN THE PREDETERMINED AMOUNT, THE INTERFERENCE IS EVIDENT AND THE GAIN IS REDUCED TO REDUCE THE INTERMODULATION PRODUCTS (1620). THIS PROCESS IS USED UNTIL THE RECEIVER IS OPERATING AT THE BEST COMPROMISE BETWEEN INTERFERENCE AND NOISE

公开(公告)号：CA2434423A1

公开(公告)日：2002-07-18

申请号：CA2434423

申请日：2002-01-10

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  SAHOTA KAMAL

IPC: H04B1/10 ,  H04B1/30 ,  H04B1/40

Abstract: A system and method for a multi-band direct conversion wireless communicatio n receiver is presented. The system incorporates a low noise amplifier (LNA) configured to amplify received RF signals, a local oscillator (LO) configure d to output a frequency, and I and Q channel mixers. Each mixer has a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output. The system further includes an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver. Thus, the receiver may operate in multiple wireless communication bands and modes and meet the associated specification s.

公开(公告)号：BR9911880A

公开(公告)日：2002-01-29

申请号：BR9911880

申请日：1999-07-02

Applicant: QUALCOMM INC

Inventor： IV JAMES A HUTCHISON ,  HOVE TAD A ,  PETERZELL PAUL E

IPC: H02J7/34 ,  H01M10/44 ,  H02J7/00 ,  H02J7/02 ,  H04B1/38 ,  H04B7/26 ,  H04M1/72 ,  H04M1/725

Abstract: A portable phone has an internal battery and an external battery pack that is releasably attachable to the phone. A control unit in the phone controls connection of the respective batteries to a phone power input, depending on the detection of the external battery voltage. Whenever an external battery is present with a voltage above a predetermined minimum value, the external battery will be connected to the phone power input to provide power to operate the phone, so that the internal battery lifetime is extended. When the external battery voltage falls below the minimum value, or the external battery is removed, the unit automatically switches to internal battery power, so that the external battery can be changed without interrupting power supply to the phone, if the phone is on or during a call. An improved multi-phase software controlled battery-charging method and apparatus is used to charge the internal and external battery packs. The preferred battery-charging method uses a multi-phased charging approach comprising a trickle-charging phase, a fast-charging phase, and a top-off charging phase. The internal battery is charged to near-full capacity by trickle-charging (when required) and subsequently fast-charging the battery. The external battery is similarly charged to near-full capacity. Thus, both batteries are charged to near-full capacity in a substantially reduced charging time period as compared with the total charging time.

公开(公告)号：NO20002829L

公开(公告)日：2000-07-21

申请号：NO20002829

申请日：2000-06-02

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E

IPC: H01M10/44 ,  H02H3/12 ,  H02H7/18 ,  H02H11/00 ,  H02J7/00

Abstract: A battery protection circuit for an external battery pack has a switch for controlling connection of a battery output to a load and a detector for detecting a resistance at a load output terminal. A first comparator compares the detected resistance to a predetermined maximum value, and a second comparator compares the detected resistance to a predetermined minimum value. If the detected resistance is in the range between the minimum and maximum values, a control signal is produced to enable connection of the battery output to the load. If the detected resistance is outside the range, the switch is disabled and no current can flow to the load.

公开(公告)号：AU4686599A

公开(公告)日：2000-01-05

申请号：AU4686599

申请日：1999-06-14

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  ROSS DAVID J ,  CHOW MARLAND

IPC: H02J7/00 ,  H04M1/02 ,  H04M1/72

Abstract: A portable phone has an outer casing with opposite upper and lower walls, one of the walls having an opening for access to the interior of the casing, and a lid removably mounted in the opening for normally closing the opening. A main circuit board is mounted in the outer casing, with a plurality of phone components mounted on the circuit board. A predetermined region of the board aligned with the opening is left exposed or empty of components, and forms a recess for receiving a battery. The battery receiving recess has contact pads, and a battery is removably engaged in the recess with battery contacts engaging the contact pads in the recess, whereby the battery can be removed and replaced via the opening after opening the lid.

公开(公告)号：AU3307299A

公开(公告)日：1999-09-06

申请号：AU3307299

申请日：1999-02-22

Applicant: QUALCOMM INC

Inventor： BALL SCOTT R ,  PETERZELL PAUL E

IPC: H02J7/34 ,  H01M10/44 ,  H02J7/00 ,  H04B1/38 ,  H04B7/26 ,  H04M1/72 ,  H04M1/725

Abstract: A portable phone has an internal battery and an external battery pack is releasably attachable to the phone. A control unit in the phone controls connection of the respective batteries to a phone power input, depending on the detection of the external battery voltage. Whenever an external battery is present with a voltage above a predetermined minimum value, the external battery will be connected to the phone power input to provide power to operate the phone, so that the internal battery lifetime is extended. When the external battery voltage falls below the minimum value, or the external battery is removed, the unit automatically switches to internal battery power, so that the external battery can be changed without interrupting power supply to the phone, if the phone is on or during a call.

公开(公告)号：CA2321212A1

公开(公告)日：1999-08-26

申请号：CA2321212

申请日：1999-02-22

Applicant: QUALCOMM INC

Inventor： BALL SCOTT R ,  PETERZELL PAUL E

IPC: H02J7/34 ,  H01M10/44 ,  H02J7/00 ,  H04B1/38 ,  H04B7/26 ,  H04M1/72 ,  H04M1/725

Abstract: A portable phone has an internal battery and an external battery pack is releasably attachable to the phone. A control unit in the phone controls connection of the respective batteries to a phone power input, depending on the detection of the external battery voltage. Whenever an external battery is present with a voltage above a predetermined minimum value, the external battery will be connected to the phone power input to provide power to operate the phone, so that the internal battery lifetime is extended. When the external battery voltage falls below the minimum value, or the external battery is removed, the unit automatically switches to internal battery power, so that the external battery can be changed without interrupting power supply to the phone, if the phone is on or during a call.

公开(公告)号：AU1424799A

公开(公告)日：1999-04-01

申请号：AU1424799

申请日：1999-01-29

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  WEILAND ANA L ,  KORNFELD RICHARD K ,  PETERZELL PAUL E

IPC: H04B1/06 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00

Abstract: An apparatus to increase a radio receiver's immunity to radio frequency interference, the radio receiver receiving a signal, the apparatus comprising: a switch (1105) coupled to the received signal, the switch (1105) having an open position and a closed position; a resistance (1101), a first end of the resistance (1101) being coupled to the closed position of the switch (1105) and a second end of the resistance (1101) being coupled to a ground potential; an amplifier (1101) having an input coupled to the open position of the switch (1105), for generating an amplified received signal at an output; a controller coupled to the switch (1105), for switching the switch (1105) to the closed position in response to the received signal exceeding a predetermined power level, said received signal conducting through said switch (1105) and said resistance (1101) to ground potential when said switch (1105) is in said closed position; and said resistance (1101) creating an impedance mismatch at the input to said amplifier (1110) when said switch (1105) is in closed position, thereby reducing the gain contributed by said amplifier (1110).

公开(公告)号：MX9704445A

公开(公告)日：1997-09-30

申请号：MX9704445

申请日：1995-12-11

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PETERZELL PAUL E ,  KORNFELD RICHARD K ,  WEILAND ANA L

IPC: H04B1/06 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00 ,  H04B07/005

Abstract: El método y aparato de la presente invencion mejora la inmunidad a la interferencia de un radio receptor. El nivel de potencia de una señal recibida se detecta. Si el nivel de potencia cumple o excede un umbral de potencia predeterminado, el amplificador de los componentes receptores. Las modalidades alternativas incluyen el uso de un detector de potencia de RF (105) para controlar la ganancia del extremo frontal (110) como una funcion de potencia emisora interferente. En lugar de un bloque de ganancia de RF conmutable (730), se proponen varios métodos de control de ganancia continuo. El control de ganancia continuo permite la supresion de interferencia y la sensibilidad del receptor para ajustarse a niveles de señal inferiores al bloque de ganancia conmutable. Un método de la presente invencion ajusta la ganancia de entrada en una cantidad predeterminada (1601). El procesamiento de receptor mide el cambio de ganancia en la potencia de señal de IF (1605). Si el cambio es menor a la cantidad predeterminada (1610), la señal de CDMA y los emisores perturbadores se encuentran por debajo del piso de ruido y, por consiguiente, la ganancia se incrementa (1615). Si el cambio de la potencia de señal IF es mayor a la cantidad predeterminada, la interferencia es evidente y la ganancia se reduce para reducir los productos de intermodulacion (1620). Este proceso se utiliza hasta que el receptor opera al mejor compromiso entre interferencia y figura de ruido.