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公开(公告)号：AT148969T
公开(公告)日：1997-02-15
申请号：AT90305170
申请日：1990-05-14
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：DE69029914T2
公开(公告)日：1997-08-21
申请号：DE69029914
申请日：1990-05-14
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：ES2100163T3
公开(公告)日：1997-06-16
申请号：ES90305170
申请日：1990-05-14
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：CA2095597C
公开(公告)日：1999-01-12
申请号：CA2095597
申请日：1993-05-05
Applicant: MOTOROLA INC
Inventor： DONG PING
Abstract: A self-adjusting phase-locked loop (PLL) parameter adjusting device (APAD) (100) and method that automatically adjusts a phase-locked loop to provide track ing ability when and where needed, as opposed to utilizing a PLL adjusting device wi th preset parameters, thus maintaining minimal possible noise bandwidth. The method utilizes (1) successively integrating the PLL error output signal over a number of samples to provide a plurality of sums, (2) checking a predetermined number of s ums and recording and counting the sign of each sum, (3) comparing the counted recor d to a predetermined threshold value, and (4) automatically adjusting PLL parameter(s ) and the sample number in accordance with a predetermined strategy, such that adjusted PLL parameters are provided to the PLL.
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Patent Agency Ranking
公开(公告)号：DK0397535T3
公开(公告)日：1997-08-18
申请号：DK90305170
申请日：1990-05-14
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：HK1004586A1
公开(公告)日：1998-11-27
申请号：HK98103606
申请日：1998-04-28
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：GR3023410T3
公开(公告)日：1997-08-29
申请号：GR970401065
申请日：1997-05-12
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：DE69029914D1
公开(公告)日：1997-03-27
申请号：DE69029914
申请日：1990-05-14
Applicant: MOTOROLA INC
Inventor： EYUBOGLU VEDAT M , DONG PING
Abstract: A modem receives data sent from a remote device over a communication channel by using a single carrier modulated signal. The modem includes a receiver which receives the modulated signal and a line probing signal sent by the remote device over the channel. The receiver is capable of receiving the modulated signal over any one of a plurality of frequency bands. A line probing processor measures characteristics of the channel based upon the received line probing signal. A selector selects one of the plurality of frequency bands, this selection being based upon the measured characteristics of the channel. The selected frequency band is to be used for receiving the modulated signal from the remote device.
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公开(公告)号：CA2087020C
公开(公告)日：1996-11-12
申请号：CA2087020
申请日：1992-05-05
Applicant: MOTOROLA INC
Inventor： DONG PING
Abstract: A device and method for asynchronous cyclic redundancy checking (CRC) for digital receivers includes utilizing a finite impulse response (FIR) filter, and comparing and gating circuits. The FIR filter may contain a first multiple delay system unit (102) and a first logic gating system (104). The comparing and gating circuit may contain a second multiple delay system unit (106), and a second logic gating system (110). The device and method is implementable, where desired, utilizing a computer program. The invention provides a faster determination of a CRC frame synchronization on a received digital signal.
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