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    Differentiation of error conditions in digital voice communication systems
    1.
    发明专利
    Differentiation of error conditions in digital voice communication systems 未知

    公开(公告)号：AU7600800A

    公开(公告)日：2001-06-12

    申请号：AU7600800

    申请日：2000-09-21

    Applicant: MOTOROLA INC

    Inventor： PAPPAS SCOTT JAMES ,  ZIOLKO ERIC FERDINAND ,  WEISS DAVID LEE

    IPC: G10L13/00 ,  G10L19/00 ,  H04B7/26 ,  H04B17/00 ,  H04L1/00 ,  G10L21/00 ,  H04B7/185

    Abstract: An apparatus and method for indicating sources of high error conditions, including out-of-range and interference conditions, to a user of a digital voice communication system. When the vocoder (206) of a communication unit (200, 450) silences due to high error conditions, a source of the high error conditions (e.g., out-of-range or interference) is determined based on the signal strength, and a source indicator (218, 220) is generated to inform the user of the source of the high error conditions. In one embodiment, where a repeater (400) is used, sources of high error conditions are detected both inbound to and outbound from the repeater. In an event of high error conditions on the inbound signal path (404), the repeater puts out a distinctive erasure (420, 422, 424) identifying the source. The communication unit (450) detects the erasure and generates a source indicator associated with the erasure. In the event of high error conditions on the outbound signal path, the communication unit determines the source based on the signal strength and generates an appropriate source indicator. By using distinctive source indicators (470, 472, 474, 476), the communication unit thereby informs the user of error conditions on the inbound or outbound path from the repeater.

    2.
    发明专利
    未知

    公开(公告)号：BR8108940A

    公开(公告)日：1982-12-14

    申请号：BR8108940

    申请日：1981-11-16

    Applicant: MOTOROLA INC

    Inventor： WEISS DAVID LEE ,  ZIOLKO ERIC FERDINAND ,  WILLIAMS TIM ARTHUR

    IPC: H03K7/02 ,  H03M3/02 ,  H03K13/22 ,  H03K13/24 ,  H04B12/04

    Abstract: CVSD modulation is detected by applying a digital signal containing CVSD information to a digital filter that is in the CVSD loop that includes a syllabic filter and a rule circuit. The digital filter includes voltage-operated switches that switch one of two voltages to a resistor network and thereby combine multiplication and digital filtering. The output of the digital filter is the output of the circuit.

    Differentiation of error conditions in digital voice communication systems.
    6.
    发明专利
    Differentiation of error conditions in digital voice communication systems. 未知

    公开(公告)号：HK1054461A1

    公开(公告)日：2003-11-28

    申请号：HK03106551

    申请日：2003-09-11

    Applicant: MOTOROLA INC

    Inventor： PAPPAS SCOTT JAMES ,  ZIOLKO ERIC FERDINAND ,  WEISS DAVID LEE

    IPC: G10L13/00 ,  G10L19/00 ,  H04B7/26 ,  H04B17/00 ,  H04L1/00 ,  G10L ,  H04B

    Abstract: An apparatus and method for indicating sources of high error conditions, including out-of-range and interference conditions, to a user of a digital voice communication system. When the vocoder (206) of a communication unit (200, 450) silences due to high error conditions, a source of the high error conditions (e.g., out-of-range or interference) is determined based on the signal strength, and a source indicator (218, 220) is generated to inform the user of the source of the high error conditions. In one embodiment, where a repeater (400) is used, sources of high error conditions are detected both inbound to and outbound from the repeater. In an event of high error conditions on the inbound signal path (404), the repeater puts out a distinctive erasure (420, 422, 424) identifying the source. The communication unit (450) detects the erasure and generates a source indicator associated with the erasure. In the event of high error conditions on the outbound signal path, the communication unit determines the source based on the signal strength and generates an appropriate source indicator. By using distinctive source indicators (470, 472, 474, 476), the communication unit thereby informs the user of error conditions on the inbound or outbound path from the repeater.

    RECEIVER FOR CVSD MODULATION WITH INTEGRAL FILTERING
    8.
    发明申请
    RECEIVER FOR CVSD MODULATION WITH INTEGRAL FILTERING 审中-公开
    用于具有整体滤波的CVSD调制的接收器

    公开(公告)号：WO1982002462A1

    公开(公告)日：1982-07-22

    申请号：PCT/US1981001523

    申请日：1981-11-16

    Applicant: MOTOROLA INC

    Inventor： MOTOROLA INC ,  WEISS DAVID LEE ,  ZIOLKO ERIC FERDINAND ,  WILLIAMS TIM ARTHUR

    IPC: H03K13/22

    CPC classification number: H03M3/024

    Abstract: Une modulation CVSD (delta a pente variable en continu) est detectee en appliquant un signal numerique contenant des informations CVSD sur un filtre numerique (12) qui est dans la boucle CVSD. Le filtre numerique comprend des commutateurs fonctionnant avec la tension (40) qui commutent l'une des deux tensions sur un reseau de resistances. La sortie du filtre numerique est controlee par un circuit de regle (18) qui commande un filtre syllabique (20) pour generer un signal qui est multiplie par la sortie du filtre numerique dans le multiplicateur (16). Le produit multiplie est ensuite filtre par le filtre (24) en un signal analogique CVSD.

    DIFFERENTIATION OF ERROR CONDITIONS IN DIGITAL VOICE COMMUNICATION SYSTEMS
    9.
    发明公开
    DIFFERENTIATION OF ERROR CONDITIONS IN DIGITAL VOICE COMMUNICATION SYSTEMS 审中-公开
    FEHLERGRUENDEN的在数字通信系统DISTINCTION

    公开(公告)号：EP1238390A4

    公开(公告)日：2003-05-28

    申请号：EP00965264

    申请日：2000-09-21

    Applicant: MOTOROLA INC

    Inventor： PAPPAS SCOTT JAMES ,  ZIOLKO ERIC FERDINAND ,  WEISS DAVID LEE

    IPC: G10L13/00 ,  G10L19/00 ,  H04B7/26 ,  H04B17/00 ,  H04L1/00 ,  G10L21/00 ,  H04B1/10 ,  H04B7/15 ,  H04B7/155 ,  H04B7/185

    CPC classification number: H04B7/2609 ,  G10L19/005

    Abstract: An apparatus and method for indicating sources of high error conditions, including out-of-range and interference conditions, to a user of a digital voice communication system. When the vocoder (206) of a communication unit (200, 450) silences due to high error conditions, a source of the high error conditions (e.g., out-of-range or interference) is determined based on the signal strength, and a source indicator (218, 220) is generated to inform the user of the source of the high error conditions. In one embodiment, where a repeater (400) is used, sources of high error conditions are detected both inbound to and outbound from the repeater. In an event of high error conditions on the inbound signal path (404), the repeater puts out a distinctive erasure (420, 422, 424) identifying the source. The communication unit (450) detects the erasure and generates a source indicator associated with the erasure. In the event of high error conditions on the outbound signal path, the communication unit determines the source based on the signal strength and generates an appropriate source indicator. By using distinctive source indicators (470, 472, 474, 476), the communication unit thereby informs the user of error conditions on the inhound or outbound path from the repeater.

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