公开(公告)号：AU7903601A

公开(公告)日：2002-02-13

申请号：AU7903601

申请日：2001-07-26

Applicant: MOTOROLA INC

Inventor： SUAREZ JOSE I ,  PRIETO YOLANDA ,  PIREZ YOLANDA M

IPC: H04N7/30 ,  G06T9/00 ,  H03M7/30 ,  H03M7/40 ,  H04N1/41 ,  H04N7/26 ,  G06K9/36 ,  G06K9/46 ,  G06K9/66 ,  G06K9/64 ,  H04B1/66

Abstract: An encoder ( 300 ) selects ( 702, 1302, 1304,1306,1308 ) one or more subsets of spatially or temporally correlated transformed data coefficients, on the basis of the significance of each subset in representing the data. The encoder ( 300 ) and a complementary decoder ( 400 ) may be applied to wavelet transform encoded images ( 500 ). The encoder ( 300 ) may be implemented on a wireless to Internet gateway server ( 108 ), in order to reduce byte size of encoded images ( 500 ) sent through a wireless network ( 112 ), and reduce the amount of processing that must be performed by a wireless device ( 118 ) to decode an image or other data. The decoder ( 400 ) and/or encoder ( 300 ) may be implemented on the wireless device ( 118 ).

公开(公告)号：AU3640199A

公开(公告)日：1999-11-01

申请号：AU3640199

申请日：1999-04-12

Applicant: MOTOROLA INC

Inventor： SUAREZ JOSE I ,  PRIETO YOLANDA

IPC: H03M7/30 ,  H03M13/41 ,  H04N7/26 ,  H04N19/94 ,  H04B1/66

Abstract: An input data signal (102) in a digital signal processing system gets adaptively quantized by performing a LMS error algorithm on a signal of transformed coefficients (113), determining paths of minimum error (202), and forming a three-dimensional matrix (206) representing these paths. Centroids are computed (208) based on the paths of minimum error (206), and these computed centroids are used as part of a next iteration to represent new quantization states and levels.

公开(公告)号：HK13995A

公开(公告)日：1995-02-10

申请号：HK13995

申请日：1995-02-06

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER LEE ,  PRIETO YOLANDA

IPC: H03D3/06 ,  H03D3/02 ,  H03D3/20

Abstract: An inductorless quadrature demodulator for frequency modulated signals is disclosed. A limited FM signal is passed through an active filter (26) and a phase shift network (30) to produce a quadrature signal. The limited FM signal is compared with the quadrature signal in an EXCLUSIVE OR gate (24) and then low pass filtered (36) to obtain recovered audio. The active filter (26) includes a transconductance amplifier (60) whose center frequency can be adjusted by appropriate adjustment of the amplifier's bias current. The bias current is temperature compensated to allow operation of the demodulator over a wide temperature range.

公开(公告)号：ES2090133T3

公开(公告)日：1996-10-16

申请号：ES90907888

申请日：1990-04-25

Applicant: MOTOROLA INC

Inventor： CLARK EDWARD T ,  PRIETO YOLANDA ,  SIMMONS JOHN W

IPC: H03D7/14 ,  H04H1/00 ,  H04H40/00 ,  H03D7/12

公开(公告)号：DE69028275D1

公开(公告)日：1996-10-02

申请号：DE69028275

申请日：1990-04-25

Applicant: MOTOROLA INC

Inventor： CLARK EDWARD ,  PRIETO YOLANDA ,  SIMMONS JOHN

IPC: H03D7/14 ,  H04H1/00 ,  H04H40/00 ,  H03D7/12

公开(公告)号：AT139383T

公开(公告)日：1996-06-15

申请号：AT85905139

申请日：1985-09-19

Applicant: MOTOROLA INC

Inventor： PRIETO YOLANDA

IPC: G05F1/567 ,  G05F1/46 ,  G05F3/22 ,  G05F3/26 ,  G05F3/30 ,  H03D3/00 ,  H03D3/06 ,  H03F1/30 ,  H03F3/04 ,  H03F3/34 ,  H03F3/343 ,  H03H11/04

Abstract: In a circuit arrangement for providing a current having a controllable temperature coefficient of current, a diffused resistor (334) is used to set up a reference current in a current source (40) which has a temperature coefficient dependent upon the diffused resistor. A current mirror (352, 354, 356) receives the reference current and passes a portion of it through an ion implanted resistor (360). The output current has a temperature coefficient which is a function of the original temperature coefficient of current and a nonzero algebraic multiple of the temperature coefficient of the implanted resistor. By appropriate selection of the resistor values and types, the temperature coefficient of the output current can be set to any desired value.

公开(公告)号：SG135894G

公开(公告)日：1995-01-13

申请号：SG135894

申请日：1994-09-23

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER LEE ,  PRIETO YOLANDA

IPC: H03D3/02 ,  H03D3/06 ,  H03D3/20

Abstract: An inductorless quadrature demodulator for frequency modulated signals is disclosed. A limited FM signal is passed through an active filter (26) and a phase shift network (30) to produce a quadrature signal. The limited FM signal is compared with the quadrature signal in an EXCLUSIVE OR gate (24) and then low pass filtered (36) to obtain recovered audio. The active filter (26) includes a transconductance amplifier (60) whose center frequency can be adjusted by appropriate adjustment of the amplifier's bias current. The bias current is temperature compensated to allow operation of the demodulator over a wide temperature range.

公开(公告)号：CA1257328A

公开(公告)日：1989-07-11

申请号：CA490840

申请日：1985-09-16

Applicant: MOTOROLA INC

Inventor： PRIETO YOLANDA

IPC: G05F1/567 ,  G05F1/46 ,  G05F3/22 ,  G05F3/26 ,  G05F3/30 ,  H03D3/00 ,  H03D3/06 ,  H03F1/30 ,  H03F3/04 ,  H03F3/34 ,  H03F3/343 ,  H03H11/04

Abstract: In a circuit arrangement for providing a current having a controllable temperature coefficient of current, a diffused resistor (334) is used to set up a reference current in a current source (40) which has a temperature coefficient dependent upon the diffused resistor. A current mirror (352, 354, 356) receives the reference current and passes a portion of it through an ion implanted resistor (360). The output current has a temperature coefficient which is a function of the original temperature coefficient of current and a nonzero algebraic multiple of the temperature coefficient of the implanted resistor. By appropriate selection of the resistor values and types, the temperature coefficient of the output current can be set to any desired value.

公开(公告)号：AU583548B2

公开(公告)日：1989-05-04

申请号：AU4953185

申请日：1985-09-19

Applicant: MOTOROLA INC

Inventor： PRIETO YOLANDA

IPC: G05F1/567 ,  G05F1/46 ,  G05F3/22 ,  G05F3/26 ,  G05F3/30 ,  H03D3/00 ,  H03D3/06 ,  H03F1/30 ,  H03F3/04 ,  H03F3/34 ,  H03F3/343 ,  H03H11/04

Abstract: In a circuit arrangement for providing a current having a controllable temperature coefficient of current, a diffused resistor (334) is used to set up a reference current in a current source (40) which has a temperature coefficient dependent upon the diffused resistor. A current mirror (352, 354, 356) receives the reference current and passes a portion of it through an ion implanted resistor (360). The output current has a temperature coefficient which is a function of the original temperature coefficient of current and a nonzero algebraic multiple of the temperature coefficient of the implanted resistor. By appropriate selection of the resistor values and types, the temperature coefficient of the output current can be set to any desired value.

公开(公告)号：GB2370715B

公开(公告)日：2005-03-16

申请号：GB0205316

申请日：2001-07-26

Applicant: MOTOROLA INC

Inventor： SUAREZ JOSE I ,  PRIETO YOLANDA ,  PIREZ YOLANDA M

IPC: H04N7/30 ,  G06T9/00 ,  H03M7/30 ,  H03M7/40 ,  H04N1/41 ,  H04N7/26

Abstract: An encoder ( 300 ) selects ( 702, 1302, 1304,1306,1308 ) one or more subsets of spatially or temporally correlated transformed data coefficients, on the basis of the significance of each subset in representing the data. The encoder ( 300 ) and a complementary decoder ( 400 ) may be applied to wavelet transform encoded images ( 500 ). The encoder ( 300 ) may be implemented on a wireless to Internet gateway server ( 108 ), in order to reduce byte size of encoded images ( 500 ) sent through a wireless network ( 112 ), and reduce the amount of processing that must be performed by a wireless device ( 118 ) to decode an image or other data. The decoder ( 400 ) and/or encoder ( 300 ) may be implemented on the wireless device ( 118 ).