公开(公告)号：PL179334B1

公开(公告)日：2000-08-31

申请号：PL32195996

申请日：1996-01-11

Applicant: MOTOROLA INC

Inventor： SIWIAK KAZIMIERZ ,  SATYAMURTI SUNIL ,  KUZNICKI WILLIAM J

IPC: H04Q7/06 ,  G10L21/00 ,  H04B1/40 ,  H04H1/00 ,  H04H20/46 ,  H04K1/00 ,  H04K1/10 ,  H04L27/34 ,  H04Q7/08 ,  H04Q7/12 ,  H04H5/00

Abstract: A modulation scheme (600) useful in a voice paging system in which both of two orthogonal modulation components (500 and 510) are used to carry two halves of a single voice message destined for a receiver, or two separate voice messages for a receiver. The single voice message is transmitted in half the time.

公开(公告)号：HU216674B

公开(公告)日：1999-08-30

申请号：HU9501746

申请日：1993-12-06

Applicant: MOTOROLA INC

Inventor： BREEDEN ROBERT LOUIS ,  SCHWENDEMAN ROBERT JOHN ,  SIWIAK KAZIMIERZ

IPC: H04B7/08

Abstract: A method and apparatus in a data communication receiver (100) for diversity reception of a radio signal including a predictably repetitive, predetermined data bit pattern (304) comprises a processor (114) controlling (600) an antenna switch (106) to select between a first antenna feed (102) and a second antenna feed (104) as a momentary source of the radio signal during transmissions of the predetermined data bit pattern (304). The radio signal received from the momentary source is monitored by a data receiver (110) during the transmission of the predetermined bit pattern (304) to derive the data therefrom, and at least one bit error count is determined (604, 610) by the processor (114). After completion of the predetermined bit pattern (304), an antenna feed (102, 104) for the radio signal is selected (616, 620) in response to the at least one bit error count.

公开(公告)号：AT178172T

公开(公告)日：1999-04-15

申请号：AT92914890

申请日：1992-06-29

Applicant: MOTOROLA INC

Inventor： SIWIAK KAZIMIERZ ,  LEITCH CLIFFORD D ,  SCHWENDEMAN ROBERT J

IPC: H04B1/16 ,  H04B1/26 ,  H04B5/04 ,  H04W8/24 ,  H04W52/02 ,  H04W88/02 ,  H04B7/00 ,  H04Q7/14

公开(公告)号：BR9607731A

公开(公告)日：1998-07-14

申请号：BR9607731

申请日：1996-01-26

Applicant: MOTOROLA INC

Inventor： SCHWENDEMAN ROBERT JOHN ,  KUZNICKI WILLIAM JOSEPH ,  SATYAMURTI SUNIL ,  SIWIAK KAZIMIERZ ,  LEITCH CLIFFORD DANA

IPC: G10L19/00 ,  G10L21/04 ,  G10L25/90 ,  H04Q7/06 ,  H04Q7/08 ,  H04Q7/12 ,  G10L5/06 ,  G10L9/00

Abstract: A method and apparatus for time-scale modification of speech using a modified version of the Waveform Similarity based Overlap-Add technique (WSOLA) comprises the steps of storing a portion of an input speech signal in a memory, analyzing the portion of the input speech signal to determined at least one filtered pitch value, calculating an estimated pitch value (12) from the at least one filtered pitch value, determining a segment size (14) in response to the estimated pitch value (12), the segment size (14) having a value greater than the estimated pitch value (12), and time-scale compressing (18) the input speech signal in response to the segment size determined.

公开(公告)号：PL174139B1

公开(公告)日：1998-06-30

申请号：PL30939193

申请日：1993-12-06

Applicant: MOTOROLA INC

Inventor： SIWIAK KAZIMIERZ ,  SCHWENDEMAN ROBERT J ,  BREEDEN ROBERT L

IPC: H04B7/08

Abstract: A method and apparatus in a data communication receiver (100) for diversity reception of a radio signal including a predictably repetitive, predetermined data bit pattern (304) comprises a processor (114) controlling (600) an antenna switch (106) to select between a first antenna feed (102) and a second antenna feed (104) as a momentary source of the radio signal during transmissions of the predetermined data bit pattern (304). The radio signal received from the momentary source is monitored by a data receiver (110) during the transmission of the predetermined bit pattern (304) to derive the data therefrom, and at least one bit error count is determined (604, 610) by the processor (114). After completion of the predetermined bit pattern (304), an antenna feed (102, 104) for the radio signal is selected (616, 620) in response to the at least one bit error count.

公开(公告)号：PL321959A1

公开(公告)日：1998-01-05

申请号：PL32195996

申请日：1996-01-11

Applicant: MOTOROLA INC

Inventor： SIWIAK KAZIMIERZ ,  SATYAMURTI SUNIL ,  KUZNICKI WILLIAM JOSEPH

IPC: H04Q7/06 ,  G10L21/00 ,  H04B1/40 ,  H04H1/00 ,  H04H20/46 ,  H04K1/00 ,  H04K1/10 ,  H04L27/34 ,  H04Q7/08 ,  H04Q7/12 ,  H04H5/00

Abstract: A modulation scheme (600) useful in a voice paging system in which both of two orthogonal modulation components (500 and 510) are used to carry two halves of a single voice message destined for a receiver, or two separate voice messages for a receiver. The single voice message is transmitted in half the time.

公开(公告)号：DE69126317T2

公开(公告)日：1997-11-13

申请号：DE69126317

申请日：1991-10-07

Applicant: MOTOROLA INC

Inventor： MITTEL JAMES ,  DAVIS WALTER ,  FERNANDEZ SERGIO ,  PONCE DE LEON LORENZO ,  SIWIAK KAZIMIERZ

IPC: H04B1/16 ,  H03D7/16 ,  H03J1/00 ,  H04B1/14 ,  H04B5/04 ,  H03J7/06

Abstract: A receiver (200) includes an automatic frequency controller that determines the frequency of a receiver signal, and a calculates a frequency error from the received signal. The frequency error is used to calculate a correction factor (316) that is used to adjust the frequency of an oscillator (308) in response to the determined error.

公开(公告)号：DE69126317D1

公开(公告)日：1997-07-03

申请号：DE69126317

申请日：1991-10-07

Applicant: MOTOROLA INC

Inventor： MITTEL JAMES ,  DAVIS WALTER ,  FERNANDEZ SERGIO ,  PONCE DE LEON LORENZO ,  SIWIAK KAZIMIERZ

IPC: H04B1/16 ,  H03D7/16 ,  H03J1/00 ,  H04B1/14 ,  H04B5/04 ,  H03J7/06

Abstract: A receiver (200) includes an automatic frequency controller that determines the frequency of a receiver signal, and a calculates a frequency error from the received signal. The frequency error is used to calculate a correction factor (316) that is used to adjust the frequency of an oscillator (308) in response to the determined error.

公开(公告)号：CZ9501630A3

公开(公告)日：1995-12-13

申请号：CZ163095

申请日：1993-12-06

Applicant: MOTOROLA INC

Inventor： SIWIAK KAZIMIERZ ,  SCHWENDEMAN ROBERT JOHN ,  BREEDEN ROBERT LOUIS

IPC: H04B7/08

CPC classification number: H04B7/0811

公开(公告)号：BR9307792A

公开(公告)日：1995-11-21

申请号：BR9307792

申请日：1993-12-06

Applicant: MOTOROLA INC

Inventor： SIWIAK KAZIMIERZ ,  SCHWERDEMAN ROBERT JOHN ,  BREEDEN ROBERT LOUIS

IPC: H04B7/08

Abstract: A method and apparatus in a data communication receiver (100) for diversity reception of a radio signal including a predictably repetitive, predetermined data bit pattern (304) comprises a processor (114) controlling (600) an antenna switch (106) to select between a first antenna feed (102) and a second antenna feed (104) as a momentary source of the radio signal during transmissions of the predetermined data bit pattern (304). The radio signal received from the momentary source is monitored by a data receiver (110) during the transmission of the predetermined bit pattern (304) to derive the data therefrom, and at least one bit error count is determined (604, 610) by the processor (114). After completion of the predetermined bit pattern (304), an antenna feed (102, 104) for the radio signal is selected (616, 620) in response to the at least one bit error count.