公开(公告)号：HK1048409A1

公开(公告)日：2003-03-28

申请号：HK02109412

申请日：2002-12-30

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 ,  H04N

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：FI20020567A

公开(公告)日：2002-03-25

申请号：FI20020567

申请日：2002-03-25

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 ).

公开(公告)号：AT142058T

公开(公告)日：1996-09-15

申请号：AT90907888

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：AU582191B2

公开(公告)日：1989-03-16

申请号：AU4862285

申请日：1985-09-19

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：AU751295B2

公开(公告)日：2002-08-08

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：GB2370715A

公开(公告)日：2002-07-03

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 encododer (300) may be implemented on the wireless device (118).

公开(公告)号：DK0426812T3

公开(公告)日：1996-09-16

申请号：DK90907888

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：CA1282843C

公开(公告)日：1991-04-09

申请号：CA491095

申请日：1985-09-19

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER L ,  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：DE69936787D1

公开(公告)日：2007-09-20

申请号：DE69936787

申请日：1999-12-20

Applicant: MOTOROLA INC

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

IPC: H04B1/00 ,  G06F17/14 ,  H03H17/02

Abstract: A digital data system ( 100 ) provides 1-D, 2-D and 3-D capability and multi-band channel capability. Improved filter banks are created by generating a filter bank having an analysis portion and synthesis portion and obtaining wavelet coefficients ( 302 ) for each portion. The wavelet coefficients are expressed in a format capable of canonical signed digit (CSD) representation, such as integers ( 302 ). The canonical signed digit (CSD) representation is controlled by a value, N, selected to control resolution of the CSD coding. Optimized CSD-coded wavelet coefficients are used as filters for data signals ( 318 ).

公开(公告)号：AT369660T

公开(公告)日：2007-08-15

申请号：AT99966539

申请日：1999-12-20

Applicant: MOTOROLA INC

Inventor： PRIETO YOLANDA ,  SUAREZ JOSE ,  PIREZ YOLANDA

IPC: H04B1/00 ,  G06F17/14 ,  H03H17/02

Abstract: A digital data system ( 100 ) provides 1-D, 2-D and 3-D capability and multi-band channel capability. Improved filter banks are created by generating a filter bank having an analysis portion and synthesis portion and obtaining wavelet coefficients ( 302 ) for each portion. The wavelet coefficients are expressed in a format capable of canonical signed digit (CSD) representation, such as integers ( 302 ). The canonical signed digit (CSD) representation is controlled by a value, N, selected to control resolution of the CSD coding. Optimized CSD-coded wavelet coefficients are used as filters for data signals ( 318 ).