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1. 发明专利

JPH0657072B2 失效
公开(公告)号：JPH0657072B2
公开(公告)日：1994-07-27
申请号：JP5036383
申请日：1983-03-28
IPC分类号： H04Q1/444 , H04J3/12 , H04L27/26 , H04Q1/448

2. 发明专利

JPH053574A IN-BAND RINGER SYSTEM WITH RECEPTION LEVEL MONITOR 失效
公开(公告)号：JPH053574A
公开(公告)日：1993-01-08
申请号：JP15303491
申请日：1991-06-25
申请人： NEC CORP
发明人： NAKAMURA OSAMU
IPC分类号： H04B3/46 , H04M3/22 , H04Q1/444
摘要： PURPOSE:To check the quality prior to connection and to issue deterioration alarm by adding a monitoring means for a reception carrier signal level. CONSTITUTION:A line connection part 1 which is an interface between lines LINE (R) and (S) sends a reception voice signal to a reception part 2 and an output part 4, and outputs it to reception signal lines 4WR and SR. A carrier signal level detecting part 3 detects the level value of a carrier signal received at the time of radio communication, and a level comparison part 6 compares it with the output value of a threshold value setting part 5 showing the threshold value of the reception level where its quality of speech is affected. When the reception level is out of the allowable range of the threshold value, an alarm output part 7 outputs an alarm signal to an alarm signal line ALM. On the other hand, the transmission signals from the transmission signal lines 4WS and SS and the carrier signal generated from a carrier signal generation part 10 are switched by a switching part 9, and transmitted from a transmission part 8 through a line connection part 1.

3. 发明专利

JPH0458222B2 失效
公开(公告)号：JPH0458222B2
公开(公告)日：1992-09-16
申请号：JP18691386
申请日：1986-08-11
申请人： TAMURA ELECTRIC WORKS LTD
发明人： SANO YOSHIKI , TSUKADA MASAAKI
IPC分类号： H04M17/00 , H04M11/00 , H04M15/30 , H04M17/02 , H04Q1/444

4. 发明专利

JPH0326192A FREQUENCY DETECTING CIRCUIT 失效
公开(公告)号：JPH0326192A
公开(公告)日：1991-02-04
申请号：JP16143189
申请日：1989-06-23
申请人： NEC CORP
发明人： OSUMI MASAKO
IPC分类号： H04N1/32 , H04Q1/444
摘要： PURPOSE:To detect an analog received signal regardless of its frequency by providing a power analytic detecting circuit to detect a signal from the power of the necessary frequency and a frequency analytic detecting circuit to analyze and detect the frequency with the time of one period of the received period and selecting either one of them. CONSTITUTION:A digital signal to be the output of an A-D converter 1 to input the analog received signal from a telephone line is inputted to a power analytic detecting circuit 2 and a frequency analytic detecting circuit 3. The frequency analytic detecting circuit 3 is composed of a register 31, a counter 32 and an identifying circuit 33, executes a frequency analysis from the time of one period of the analog received signal, identifies whether a prescribed frequency is detected or not and executes an output. The power analytic detecting circuit 2 identifies whether the prescribed frequency is detected or not by the power analysis of the prescribed frequency with a BPF 21 and executes the output. A selecting circuit 4 is operated so as to select and output the detection result of the power analytic detecting circuit 2 when a control signal (a) is at a high level and so as to select and output the detection result of the frequency analytic detecting circuit 3 when the control signal (a) is at a low level.

5. 发明专利

JPH0232828B2 失效
公开(公告)号：JPH0232828B2
公开(公告)日：1990-07-24
申请号：JP25520685
申请日：1985-11-15
申请人： INTAANASHONARU BIJINESU MASHIINZU CORP
发明人： BURUUSU JEEMUZU UIRUKII
IPC分类号： H04M11/00 , H04M1/82 , H04M3/22 , H04M11/06 , H04Q1/444

6. 发明专利

JPH0282793A INTRA-BAND SIGNALLING DEVICE 失效
公开(公告)号：JPH0282793A
公开(公告)日：1990-03-23
申请号：JP23269788
申请日：1988-09-19
申请人： NEC CORP
发明人： ARAI SATOSHI
IPC分类号： H04M3/22 , H04Q1/444
摘要： PURPOSE:To efficiently set a line by setting the operating time of a signal receiving circuit in a receiving station only by means of the operation of a transmitting station at the time of setting the line. CONSTITUTION:On the input side of a transmitting circuit 13 in each transmitting part, two oscillating circuits 10 and 11 to output setting signals at frequencies f1 and f2 respectively different from that of a signal current are provided through a switch 12, and two signal oscillating circuits 20 and 30, which are connected to the input side of a signal receiving circuit 15 in a receiving part and generate switching signals to set the operating time of the signal receiving circuit 15 based on the output signals of the oscillating circuits 10 and 11, are provided. Consequently, when the line is set, only by the operation of the transmitting station, the operating time of the signal receiving circuit 15 in the receiving station can be set. Thus, the working efficiency of the line setting can be improved.

7. 发明专利

JPS6471292A DIAL TONE DETECTOR 失效
公开(公告)号：JPS6471292A
公开(公告)日：1989-03-16
申请号：JP20100888
申请日：1988-08-09
申请人： MITEL CORP
发明人： MEIBUIN JIEI ROBAATSU , FURANKU DEIA
IPC分类号： H04Q1/446 , H04Q1/444 , H04Q1/45 , H04Q1/453
摘要： PURPOSE: To minimize the number of interface pins by providing a circuit for inputting all signals and outputting a code corresponding to a detected multifrequency call originating tone (DTMF) signal and a signal showing 'presence of monitor signal'. CONSTITUTION: A DTMF and a monitor tone supplied to an input terminal 1 are inputted through an amplifier 2, filter 3 and AGC circuit 4 to a high-pass filter group and a low-pass filter group 5. An output from the filter group 5 is supplied to a Schmitt trigger circuit 6, converted into a rectangular wave and supplied to a DTMF detector, code converter and latch circuit 7 later. When a suitable DTMF frequency is found, a digital code signal corresponding to the frequency of an input signal is supplied through a shift register 8 to an output terminal 9. A steering circuit 11 outputs a display signal showing the presence of DTMF to an EST terminal 11.

8. 发明专利

JPS61152156A CALL PROCEEDING MONITOR 失效
公开(公告)号：JPS61152156A
公开(公告)日：1986-07-10
申请号：JP25520685
申请日：1985-11-15
申请人： IBM
发明人： BURUUSU JIEEMUZU UIRUKII
IPC分类号： H04M11/00 , H04M1/82 , H04M3/22 , H04M11/06 , H04Q1/444

9. 发明专利

JPS61126855A Voice dial controlling system 失效
标题翻译：语音拨号控制系统
公开(公告)号：JPS61126855A
公开(公告)日：1986-06-14
申请号：JP24761684
申请日：1984-11-22
申请人： Fujitsu Ltd
发明人： YAMAGUCHI SUKETSUGU
IPC分类号： G10L11/00 , G10L15/00 , H04M3/42 , H04Q1/444 , H04Q3/42
CPC分类号： H04Q3/42
摘要： PURPOSE:To reduce the malrecognition of the voice dial information caused by the transmission characteristic deviation by correcting the voice dial information transferred from the calling telephone system which is performed based on the characteristic deviation of the transmission line between the calling telephone set and the voice recognizing means from that of the standard transmission line. CONSTITUTION:Prior to receiving the voice dial information, a voice recognizing circuit 6 transmits a reference voice information (c) from the calling telephone system 2. Based on the recognition result of the voice information (c) and the reference message standard pattern 641, the circuit 6 corrects the recognition result by its characteristic correcting part 621, and later, starts the receiving of the voice dial information. Thus, the voice dial information e1-en transferred from the telephone 2 having different transmission characteristics are corrected to an approximate standard level, and hence the malrecognition is reduced.
摘要翻译：目的：通过根据呼叫电话机和语音识别之间的传输线路的特征偏差校正从呼叫电话系统传送的语音拨号信息，减少由传输特性偏差引起的语音拨号信息的误认识意味着从标准传输线路。声明：在接收到语音拨号信息之前，语音识别电路6从呼叫电话系统2发送参考语音信息（c）。根据语音信息（c）和参考消息标准模式641的识别结果，电路6通过其特征校正部分621校正识别结果，并且稍后开始接收语音拨号信息。因此，从具有不同传输特性的电话机2传送的语音拨号信息e1-en被校正到近似的标准电平，因而减少了误认。

10. 实用新型

JPS56152449U 失效
公开(公告)号：JPS56152449U
公开(公告)日：1981-11-14
申请号：JP5039180
申请日：1980-04-14
IPC分类号： H04M3/22 , H04Q1/444 , H04Q1/45

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