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1. 发明专利

JPS6175696A Operator's trunk circuit 失效
标题翻译：操作人员电路
公开(公告)号：JPS6175696A
公开(公告)日：1986-04-18
申请号：JP19682384
申请日：1984-09-21
申请人： Fujitsu Ltd , Hitachi Ltd , Nec Corp , Nippon Telegr & Teleph Corp , Oki Electric Ind Co Ltd
发明人： OKI HIROSHI , ITO HIROSHI , FUKUI AKIRA , FUKUSHIMA YUTAKA , OSAKI TAKAAKI
IPC分类号： H04Q3/42 , H04M3/60
CPC分类号： H04M3/60
摘要： PURPOSE:To simplify the state control timing and circuit constitution b providing a selection circuit on the three-party call circuit, inputting respective time slots for operator, line wire and extension in the same timing as a state control signal and selecting a selection circuit with the aid of the state control signal. CONSTITUTION:The output of each selection circuit is connected to a three-party call circuit 5 and a selection circuit 6 provided at each input terminal, and further connected connected to each operator's output terminal 7, extension output terminal 8 and line wire output terminal 9. Time slots, for instance, AO, BO and CO, inputted to respective terminals 1, 2 and 3 are inputted to the corresponding three-party call circuit 5 and selection circuit 6, but they are selected in the selection circuit 6 with the aid of a state control signal PO inputted the moment respective time slots are inputted, and outputted to the prescribed output terminal. For instance, where the state control signal PO shows a line wire call of a pattern 2, an input 2 is selected in the selection circuit 6. Namely, the AO and CO are outputted to the line wire terminal and the operator's terminal, respectively, and a no-call patter NT is outputted to the extension terminal.
摘要翻译：目的：为了简化状态控制定时和电路结构b，在三方通话电路上提供选择电路，在与状态控制信号相同的定时输入操作员，线路和分机的各个时隙，并选择具有辅助状态控制信号。构成：每个选择电路的输出连接到三方通话电路5和设置在每个输入端子上的选择电路6，并进一步连接到每个操作员的输出端子7，扩展输出端子8和线路输出端子9 输入到各个端子1,2和3的时隙例如AO，BO和CO输入到相应的三方通话电路5和选择电路6，但是它们在选择电路6中被辅助地选择输入各时隙输入的状态控制信号PO，并输出到规定的输出端子。例如，在状态控制信号PO示出模式2的线路线路呼叫的情况下，在选择电路6中选择输入2.即，AO和CO分别输出到线路终端和操作员终端，并且向该分机终端输出无呼叫模式NT。

2. 发明专利

JPS5952414A Fast-forward reproduction control system 失效
标题翻译：快进再生控制系统
公开(公告)号：JPS5952414A
公开(公告)日：1984-03-27
申请号：JP16117982
申请日：1982-09-16
申请人： Fujitsu Ltd , Nec Corp , Nippon Telegr & Teleph Corp
发明人： KUNIYOSHI SHIYUUICHI , KIMURA AKIO , SHINOOKA MAKOTO , OOYAMA MINORU , YAZAWA KATSUHIKO , FUKUI AKIRA
IPC分类号： H04M11/10 , G11B20/10 , H04M3/50 , H04M3/533
CPC分类号： H04M3/533
摘要： PURPOSE:To make a speedy program search of a desired message and listen to it in a short time, and to shorten a reproduction time and improve use efficiency, by controlling the rapid traverse reproduction of a digital voice storage reproducing device that is used in common by many subscribers. CONSTITUTION:A voice signal inputted from a telephone set 1 is compressed on silent basis and stored and held in a voice storage reproducing device 9. A reproduction request signal is received by a buffer memory device 6 and data to be reproduced by a recording device 8 or 8' is transferred to the buffer memory for reproduction of the memory device 6 and reproduced by the codes 5 of a trunk 4 to be sent to the telephone set 1 through exchanges 3 and 2. Further, the information after the silent compression and storage is reproduced while thinned out at specific intervals of time, speeding up the operation.
摘要翻译：目的：通过控制共同使用的数字语音存储再现装置的快速遍历再现，使得在短时间内快速地搜索期望的消息并收听它，并缩短再现时间并提高使用效率由许多用户。构成：从电话机1输入的语音信号以静音方式被压缩并存储并保存在语音存储再现装置9中。再现请求信号由缓冲存储装置6接收，数据由记录装置8再现或8'被传送到缓冲存储器以用于存储器件6的再现，并由中继线4的代码5再现，以通过交换器3和2发送到电话机1.此外，静音压缩和存储之后的信息在特定的时间间隔被稀释再现，加快了操作。

3. 发明专利

JPS5949045A Signal receiver 失效
标题翻译：信号接收器
公开(公告)号：JPS5949045A
公开(公告)日：1984-03-21
申请号：JP15906382
申请日：1982-09-13
申请人： Fujitsu Ltd , Hitachi Ltd , Nec Corp , Nippon Telegr & Teleph Corp , Oki Electric Ind Co Ltd
发明人： KITAMURA NOBUAKI , ITOU HIROSHI , MORIMOTO KUNIO , FUKUI AKIRA , HIROSE KAZUTO
IPC分类号： H04Q1/457 , H04L27/26
CPC分类号： H04L27/26
摘要： PURPOSE:To eliminate the use of a nucleus generating circuit and a multiplier, by using a polarity inverting circuit which inverts the polarity of the sample value of a received signal sampled in a prescribed cycle in a cycle set previously and an integration circuit which integrates for a prescribed period the sample value having its polarity controlled by the polarity inverting circuit. CONSTITUTION:For the discrete Fourier conversion processing, the integration value Fe(f0) and Fs(f0) are decided by dn and Bn if reference frequency f0 and phase phi are fixed. Then alphan and betan are turned into (+1) or (-1) periodically as shown in the table. A control circuit 13 controls a polarity inverting circuit 11 so that a received signal x(nT) as it is to an integration circuit in correspondence to (n) of alphan=+1 and that the signal x(nT) is transmitted to the circuit 6 after inversion of the signal polarity in correspondence to (n) of alphan=-1. At the same time, a polarity inverting circuit 12 is controlled so that the signal x(nT) is transmitted as it is to an integration circuit 7 in correspondence to (n) of betan=+1 and that the signal x(nT) to the circuit 7 after inversion of the signal polarity in correspondence to (n) of betan=-1 respectively.
摘要翻译：目的：为了消除使用核产生电路和乘法器，通过使用极性反转电路，该极性反相电路使先前设定的周期中以规定周期取样的接收信号的采样值的极性反转，并且积分电路一个规定的时间段，其极性由极性反转电路控制。构成：对于离散傅里叶变换处理，如果参考频率f0和相位phi是固定的，积分值Fe（f0）和Fs（f0）由dn和Bn决定。然后，如表所示，定期将alphan和betan变成（+1）或（-1）。控制电路13控制极性反转电路11，使得接收信号x（nT）按照与alphan = + 1的（n）对应的积分电路，并且信号x（nT）被发送到电路信号极性反转后的6对应于（n）的alphan = -1。同时，极性反转电路12被控制成使得信号x（nT）按照与betan = + 1的（n）对应的积分电路7原样传输，并且信号x（nT）至信号极性反转后的电路7分别对应于（n）的betan = -1。

4. 发明专利

JPS5765948A Multifrequency signal receiver 失效
标题翻译：多频信号接收器
公开(公告)号：JPS5765948A
公开(公告)日：1982-04-21
申请号：JP14260180
申请日：1980-10-13
申请人： Fujitsu Ltd , Hitachi Ltd , Nec Corp , Nippon Telegr & Teleph Corp , Oki Electric Ind Co Ltd
发明人： FUJII KENSAKU , IMAGAWA HITOSHI , KAWAGUCHI MASAHARU , FUKUI AKIRA , MURAMATSU RIYUUJIROU
IPC分类号： H04Q1/457 , H03H17/02 , H04L27/26
CPC分类号： H04L27/26
摘要： PURPOSE:To make discrete Fourier conversion possible without a multistage shift rgister, by using a primary cyclic digital filter, where the filter coefficient is a positive number smaller than 1, in the multifrequency signal converter using discrete Fourier conversion. CONSTITUTION:When an input signal f(nt) is inputted to a terminal 1, cosnomegaT and sinnomegaT supplied from a generating circuit 7 are multiplied by multipliers 31 and 32 and are inputted to adders 41 and 42. Adders 41 and 42 constitute a primary cyclic digital filter together with multipliers 35 and 36 for multiplication of a filter coefficient alpha (alpha is a positive number smaller than 1) and one-period delay registers 51 and 52, and a real part Fc' and an imaginary part Fs' are outputted from adders 41 and 42. The Fc' and the Fs' are squared and are added by an adder 45.
摘要翻译：目的：通过使用离散傅里叶变换的多频信号转换器中的滤波器系数为小于1的主循环数字滤波器，可以进行离散付里叶变换。构成：当输入信号f（nt）输入到端子1时，从发生电路7提供的cosnomegaT和sinnomegaT乘以乘法器31和32，并被输入到加法器41和42.加法器41和42构成主循环数字滤波器与乘法器35和36一起用于乘法滤波器系数α（α是小于1的正数）和一周期延迟寄存器51和52，实部Fc'和虚部Fs'从加法器41和42. Fc'和Fs'被平方并由加法器45相加。

5. 发明专利

JPS59113593A Memory control system 失效
标题翻译：存储控制系统
公开(公告)号：JPS59113593A
公开(公告)日：1984-06-30
申请号：JP22337882
申请日：1982-12-20
申请人： Nec Corp , Nippon Telegr & Teleph Corp
发明人： OOKAWA KAZUMASA , FUKUI AKIRA , SHINOOKA MAKOTO , YOSHIDA TAKASHI
IPC分类号： G11C11/00 , G11C11/34 , G11C11/406
CPC分类号： G11C11/34
摘要： PURPOSE:To simplify a memory control circuit and make a high-speed processing possible by generating a time slot permitting memory access to prevent the memory competition and keeping always an access time constant. CONSTITUTION:A time slot generating circuit 3 which gives an access permission time of a memory is started synchronously with the start of a main control part 2 by the signal of a timer circuit 1. The access permission time generated by the time slot generating circuit 3 is controlled by the main control part 2. By this constitution of the memoy control circuit, the main control part 2 is started at every certain period to perform required processing and simultaneously, the time slot generating circuit 3 is started to generate the access permission time to a memory request source circuit 4, 5, and 6. The time slot generating circuit 3 varies the access permission time as required by the main control part 2.
摘要翻译：目的：为了简化存储器控制电路并通过生成允许存储器访问的时隙来实现高速处理，以防止存储器竞争并保持总是访问时间常数。构成：通过定时器电路1的信号，与主控制部分2的启动同步开始给出存储器的存取许可时间的时隙发生电路3.由时隙发生电路3产生的访问许可时间由主控制部分2控制。通过记忆控制电路的这种结构，主控制部分2在每一个特定周期开始执行所需的处理，同时，时隙发生电路3开始产生访问许可时间到存储器请求源电路4,5和6.时隙发生电路3根据主控制部分2的要求改变访问许可时间。

6. 发明专利

JPH0293700A SPEECH DECODER OF PITCH PREDICTIVE MULTI-PULSE SPEECH ENCODING AND DECODING SYSTEM 失效
公开(公告)号：JPH0293700A
公开(公告)日：1990-04-04
申请号：JP24807088
申请日：1988-09-30
申请人： NEC CORP
发明人： FUKUI AKIRA
IPC分类号： G10L19/04
摘要： PURPOSE:To vary the reproduction speed of an encoded speech by compensating a generated multi-pulse sound source with a zero component when the decoded frame length of a speech decoder determined based upon desired frame length is longer than the encoded frame length of a speech encoder at the time of speech decoding. CONSTITUTION:When decoded frame length is longer than encoded frame length, a sound source generation part 1 compensates the zero component by the difference to increase the frame length and inputs the frame to a pitch predicting filter 11. Namely, when the determined decoded frame length Ta is longer than the encoded frame length T, the zero component is added by the difference ta to generate a multi-pulse sound source. When the decoded frame length Tb is shorter than the encoded frame length T, on the other hand, no pulse train is generated as to a difference tb which is positioned behind. Therefore, the reproduction speed of a speech can be varied.

7. 发明专利

JPH01198892A DIAL PULSE DETECTING SYSTEM 失效
公开(公告)号：JPH01198892A
公开(公告)日：1989-08-10
申请号：JP2329388
申请日：1988-02-03
申请人： NEC CORP
发明人： FUKUI AKIRA
IPC分类号： H04Q1/32
摘要： PURPOSE:To accurately detect a dial pulse under a telephone call by obtaining a position, at which the correlation between a step response and an input signal is large, as the one for the make/break of the dial pulse. CONSTITUTION:A cross-correlation phixr is obtained at a cross-correlation part 31 by using an input signal X and an auto-correlation phirr of a step response R of a synthesizing filter 3, the cross correlation phixr is made into the initial value of an evaluation function, and step searching is executed at a step searching part 32 by using the evaluation function and the auto-correlation phirr. Namely, a first step is placed at the position where the absolute value of the evaluation function is the maximum, and a result obtained by subtracting the auto- correlation of the step response, which is normalized to be as large as the step at the position where the step is placed, from the evaluation function is made into a new evaluation function. Thereafter, the step is repeatedly obtained from this evaluation function in the same manner as long as the value of the step is equal to or larger than a value determined according to the value of the first step, and the position where the step is placed is made into the position for the make/break of the dial pulse. Thus, a dial pulse signal under the telephone call can be surely detected.

8. 发明专利

JPH01107299A MULTI-PULSE VOICE ENCODING SYSTEM 失效
公开(公告)号：JPH01107299A
公开(公告)日：1989-04-25
申请号：JP26610687
申请日：1987-10-21
申请人： NEC CORP
发明人： FUKUI AKIRA
IPC分类号： G10L19/04
摘要： PURPOSE: To increase the quality of an encoded voice with a small arithmetic quantity by finding pulses while correcting the pulse width. CONSTITUTION: This system has a weighting filter 12, a linear predictive analysis part 13, a weighted impulse response part 14, a correlation part 15, an autocorrelation part 16, and a pulse search part 17. A pulse search is executed at positions where no pulse rises and each time one pulse is found, the size of the pulse at the position where the absolute value of an evaluation function is maximum among found positions where pulses rises, is corrected and the autocorrelation ϕrr of impulse response is normalized to the corrected size of the pulse and subtracted at the position where the size of the pulse is corrected and subtracted from the evaluation function to obtain a new evaluation function. Consequently, superior encoded voice quality is obtained with a small arithmetic quantity.

9. 发明专利

JPS6474600A VOICE ENCODING SYSTEM 失效
公开(公告)号：JPS6474600A
公开(公告)日：1989-03-20
申请号：JP23292887
申请日：1987-09-16
申请人： NEC CORP
发明人： FUKUI AKIRA
IPC分类号： G10L19/00
摘要： PURPOSE: To efficiently obtain a voice with excellent tone quality by small operation quantity by vector-quantizing a feature parameter when a difference of feature parameters between plural frames is large, and when the difference is small, vector-quantizing the difference of the parameters. CONSTITUTION: A subtractor 10 subtracts the locally decoded feature parameter vector of a preceding frame from the input vector Xi=(x1 , x2 ,..., XN) of an i-th frame including a feature parameter as an element and inputs a difference vector Yi to a vector quantizer 4, and the size of the vector Yi is compared with a threshold. When the vector Yi is smaller than the threshold, the vector Yi is compared with plural difference code vectors Z stored in a dictionary 3 and a code vector Zj having the shortest distance from the vector Yi is selected. When the vector Yi is larger, the input vector Xi is compared with the code vectors stored in the dictonary 3 and the code vector Zj having the shortest distance from the input vector Xi is selected. Since the vector-quantized signal is used, a voice with excellent tone quality can be obtained.

10. 发明专利

JPS6413598A VOICE ENCODER 失效
公开(公告)号：JPS6413598A
公开(公告)日：1989-01-18
申请号：JP17029187
申请日：1987-07-08
申请人： NEC CORP
发明人： FUKUI AKIRA
IPC分类号： G10L19/04
摘要： PURPOSE: To efficiently determine a pulse position and to improve the tone by reducing the number of quantized bits at the positions of a starting predetermined number of pulses less than the number of quantized bits at the positions of remaining pulses by a means which quantizes positions where multipulses supplied to a linear predictive filter rises. CONSTITUTION: This encoder is equipped with a pulse search circuit 6 as a pulse search means which determines the time positions and sizes of specified plural pulses according to autocorrelation found by a 2nd arithmetic means autocorrelation arithmetic circuit 5 and actocorrelation found by an autocorrelation arithmetic circuit 4 as a 3rd arithmetic means, and an encoding circuit 9 as an encoding means having a quantizing means which sets the number of bits for quantizing the distance between pulses in a starting time area with specified plural pulses less than the number of bits for quantizing the distance between pulses in a time area following the said time area and quantizes the distance between pulses determined by the pulse search means 6 with a specified number of bits. Consequently, the number of pulses that is encoded with a limited number of bits is increased, so the tone of an encoding voice is improved.

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