公开(公告)号：ES2170796T3

公开(公告)日：2002-08-16

申请号：ES95917190

申请日：1995-04-28

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  WILSON NATHANIEL B ,  BLACK PETER J

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B1/18 ,  H04L27/22 ,  H04L27/38

Abstract: An automatic gain control (AGC) apparatus for a digital receiver is disclosed herein. The AGC apparatus includes an adjustable gain amplifier having an input port for receiving an input signal, a control port for receiving a gain control signal, and an output port for providing an output signal. The AGC apparatus further includes a measurement circuit for generating a received power signal based on the power of the output signal. A saturating integrator compares the received power signal to a reference signal and generates an gain control signal in response to a result of the comparison. The saturating integrator includes a decision circuit for enabling integration based on values of the received power signal, the reference signal, and the gain control signal. In a preferred implementation the utilization of an input limiter in conjunction with an analog to digital converter enables accommodation of an increased input signal dynamic range. Accordingly, the AGC apparatus is capable of being used in digital demodulation of FM signals. The AGC apparatus may also be employed within a dual mode receiver designed to process both FM and code division multiple access (CDMA) input signals.

公开(公告)号：AU2002243523A1

公开(公告)日：2002-07-24

申请号：AU2002243523

申请日：2002-01-10

Applicant: QUALCOMM INC

Inventor： SAHOTA KAMAL ,  PETERZELL PAUL E

IPC: H04B1/10 ,  H04B1/30 ,  H04B1/40

公开(公告)号：MXPA00012614A

公开(公告)日：2002-06-21

申请号：MXPA00012614

申请日：1999-06-14

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E

IPC: H04M1/02 ,  H02J7/00 ,  H04M1/72

Abstract: Un telefono portatil (10) tiene un estuche exterior (14) con paredes superior e inferior opuestas (16,18), una de las paredes tiene una abertura (24) para dar acceso al interior del estuche, y una tapa (28) montada de manera removible en la abertura para cerrar normalmente la abertura. Un tablero de circuitos principal (22) se encuentra montado en el estuche exterior, con una pluralidad de componentes de telefono (30) montados sobre el tablero de circuitos. Una region predeterminada (26) del tablero alineada con la abertura se deja expuesta o vaciada de componentes, y forma una cavidad para recibir una bateria (12). La cavidad que recibe la bateria (26) tiene adaptadores de contacto (39,40) y una bateria (12) se acopla de manera removible en la cavidad con los contactos de la bateria acoplando los adaptadores de contacto en la cavidad, y por lo que la bateria puede ser removida y reemplazada via la abertura despues de abrir la tapa.

公开(公告)号：HK1037062A1

公开(公告)日：2002-01-25

申请号：HK01107970

申请日：2001-11-13

Applicant: QUALCOMM INC

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

IPC: H04M1/02 ,  H02J7/00 ,  H04M

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：HK1035080A1

公开(公告)日：2001-11-09

申请号：HK01105741

申请日：2001-08-15

Applicant: QUALCOMM INC

Inventor： CICCARELLI STEVEN C ,  KAUFMAN RALPH E ,  PETERZELL PAUL E

IPC: H03F1/02 ,  H03F1/26 ,  H03F1/34 ,  H03F1/32 ,  H03G1/00 ,  H03G3/18 ,  H03G3/20 ,  H04B1/10 ,  H04B1/16 ,  H03F ,  H03G

Abstract: An amplifier having an adjustable current source which can be controlled to provide the requisite level of performance at reduced current consumption. The amplifier is first designed using one of many designs available and known in the art. A current source is then designed to provide adjustable bias current for the amplifier. The current source can be designed with MOSFETs which require no additional bias current and can accept a standard digital control signal. The current source can also be designed with active devices which are selected based on the logic of the control signals for ease of interface. The bias current determines the linearity and noise performance of the amplifier. The bias current is adjusted to provide the requisite level of performance while reducing power consumption. The current source can be designed to operate in discrete steps or to have substantially continuous current steps.

公开(公告)号：BR9906850A

公开(公告)日：2000-10-10

申请号：BR9906850

申请日：1999-10-05

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：ZA9901318B

公开(公告)日：2000-07-04

申请号：ZA9901318

申请日：1999-02-18

Applicant: QUALCOMM INC

Inventor： CHOW MARLAND ,  ROSS DAVID J ,  PETERZELL PAUL E ,  ABERLE TY ,  MONSON RODNEY H

IPC: H04B1/38 ,  H04M1/02 ,  H01M ,  H04B ,  H04L ,  H04M ,  H04Q

CPC classification number: H04M1/0262 ,  H04B1/3883

公开(公告)号：AU717794B2

公开(公告)日：2000-03-30

申请号：AU1424999

申请日：1999-01-29

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

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：AU717774B2

公开(公告)日：2000-03-30

申请号：AU1425099

申请日：1999-01-29

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

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：CA2336858A1

公开(公告)日：2000-01-13

申请号：CA2336858

申请日：1999-07-02

Applicant: QUALCOMM INC

Inventor： HOVE TAD A ,  HUTCHISON JAMES A IV ,  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 (10) and an external battery pack (12) that is releasably attachable to the phone. A control unit (72) in the phone controls connection of the respective batteries to a phone power input (40), depending on the detection of the external battery voltage. Whenever a n external battery is present with a voltage above a predetermined minimum value, the external battery will be connected (51) 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, o r the external battery is removed, the unit automatically switches to internal battery power (50), 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 (200) uses a multi-phased charging approac h comprising a trickle-charging phase (206), a fast-charging phase (208), and a top-off charging phase (214). 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.