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1. 发明专利

JPS59112737A Digital speech interpolation device 失效
标题翻译：数字语音插入设备
公开(公告)号：JPS59112737A
公开(公告)日：1984-06-29
申请号：JP22331282
申请日：1982-12-20
申请人： Nec Corp
发明人： SHIMOYAMA HARUO
IPC分类号： H04M11/06 , H04J3/17
CPC分类号： H04J3/172
摘要： PURPOSE:To remove a click noise due to the level difference of a reproduced sound signal by outputting a significant sound PCM signal which is transmitted intermittently in a significant sound section at a reception part, and inserting a low noise with a DC pedestal in a pause section. CONSTITUTION:The reception part of a digital speech interpolation device DSI device is provided with an insertion part 19 for the low noise with the DC pedestal. The insertion part 19 inputs an individual significant sound PCM signal (a) which is transmitted intermittently to an accumulator 39, which accumulates the signal (a) at a specific position specific numbers, so that the accumulated value is held in a register 42 for a specific period. The output of the register 42 is divided by the expected number of times at a mean value circuit 43 to calculate the mean DC pedestal level. The signal (i) is added 44 to a low noise (b) from a low noise generator 17 to generate the low noise (j) with the DC pedestal, which is inputted to a switch 37. The switch 37 inserts and couples the signal (a) in the significant section or signal (j) in the pause period under the control of a sound detection signal (d) to reproduce a continuous sound PCM signal C.
摘要翻译：目的：通过输出在接收部分的显着声音部分间歇地发送的有效声音PCM信号，并且将具有DC基座的低噪声插入到暂停中来消除由于再生声音信号的电平差引起的点击噪声部分。构成：数字语音插入装置DSI装置的接收部分具有用于具有DC基座的低噪声的插入部分19。插入部分19输入间歇地发送到累加器39的单个有效声音PCM信号（a），累加器39将信号（a）累积在特定位置特定数字，使得累加值被保存在寄存器42中，用于具体期限寄存器42的输出除以平均值电路43的预期次数以计算平均DC基准电平。信号（i）从低噪声发生器17加到低噪声（b）44，以便输入到开关37的DC基座产生低噪声（j）。开关37插入并耦合信号（a）在声音检测信号（d）的控制下的暂停时段中的显着部分或信号（j）中，以再现连续声音PCM信号C.

2. 发明专利

JPS63268325A CHANNEL CHECK SYSTEM FOR DSI/ADPCM TRANSMISSION SECTION 失效
公开(公告)号：JPS63268325A
公开(公告)日：1988-11-07
申请号：JP10189787
申请日：1987-04-27
申请人： NEC CORP
发明人： SHIMOYAMA HARUO
IPC分类号： H04J3/17 , H04B14/06
摘要： PURPOSE:To simply attain the channel path check of a transmission section by using a 1st test signal so as to allocate a channel test signal to a DSI channel, inserting a 2nd test signal to a channel time slot to be tested actually and using said signal so as to apply time check. CONSTITUTION:A 1st test signal inserting means 11 inserts the 1st test signal to a predetermined time slot of a digital voice multiplex signal string. Then the 2nd test signal is inserted to the channel time slot with the 1st test signal inserted thereto when the 1st test signal is at a high level. As the 2nd test signal, a test pattern where the input/output pattern of ADPCM is clarified is prepared and it is stored in a ROM, and the 2nd test signal read from the ROM is used for checking the channel path of the DSI/ADPCM while the 1st test signal is set. Thus, the system can check even up to the ADPCM in comparison with a conventional system which checks only the DSI part.

3. 发明专利

JPS62279744A INTERFACE DEVICE FOR PCM SIGNAL 失效
公开(公告)号：JPS62279744A
公开(公告)日：1987-12-04
申请号：JP12406486
申请日：1986-05-28
申请人： NEC CORP
发明人： SHIMOYAMA HARUO
IPC分类号： H04B1/74 , H04L1/22 , H04L29/14
摘要： PURPOSE:To effective attain redundancy conversion by deciding warning signal generation after the information of a selected portmap circuit and the information of a fault recognition circuit are received, executing a warning output and using a standby device instead of a fault interface device. CONSTITUTION:The PCM signal strings a1-a4 and b1-b6 of the first and the second groups A and B are connected to two of interface devices 21-23 through a switcher 1 and the rest one which isn't connected is arranged as a stand-by PCM signal interface device. If fault occurs in the first device 21, the fault recognition circuits 31-36 of the device 21 are connected to lines L1-L6 respectively so as to detect the abnormality of signal strings a1-a4 and transmit the detected information to a warning signal generation decision circuit 4. To the circuit 4 the information of one portmap circuit selected by a selection circuit 14, in this case it is the information of a portmap circuit 11, has been added and the warning signal of a decision signal output is outputted outside from a warning signal generation circuit 5. And the device 23 is used instead of the device 21.

4. 发明专利

JPS58210778A Digital transmission system for composite picture signal 失效
标题翻译：用于复合图像信号的数字传输系统
公开(公告)号：JPS58210778A
公开(公告)日：1983-12-08
申请号：JP9377482
申请日：1982-05-31
申请人： Nec Corp
发明人： SHIMOYAMA HARUO
IPC分类号： H04N7/24 , H04N19/50 , H04N7/13
CPC分类号： H04N7/24
摘要： PURPOSE:To improve the flexibility and economy of a transmission system in coders which code a composite picture signal on PCM basis and codes the PCM-coded composite picture signal with high efficiency, by detecting accurately a horizontal synchronizing signal from transmitted encoded picture data. CONSTITUTION:The 1st coder 5 which codes the composite picture signal on PCM basis and the 2nd coder 6 which codes the PCM picture data by D/D conversion with high efficiency are connected mutually through a PCM transmission line 7. The coder 5 adds 55 a predetermined time and level to the leading edge of the horizontal synchronizing signal of the composite picture signal which is clamped at a predetermined level and A/D converted 53 to send out coded picture data. The code 6, on the other hand, detects the predetermined level of the leading edge part of the horizontal synchronizing signal added by the coder 5 after word synchronization, and decides on the level detection time position as a horizontal synchronizing signal time position, thereby detecting the horizontal synchronizing signal. Then, a subtracting circuit 64 performs exactly the opposite subtraction to the addition of the coder under the control of the horizontal synchronizing signal with regard to the received coded picture data to remove the previously added level, and a high-efficiency coding circuit 65 suppresses redundancy, so that the high-efficiency coded picture data is transmitted with a transmitting frame constituted on the basis of the horizontal synchronizing signal.
摘要翻译：目的：为了提高编码器中传输系统的灵活性和经济性，通过PCM编码复合图像信号，并通过从传输的编码图像数据中精确检测水平同步信号，高效编码PCM编码的复合图像信号。构成：以PCM为基础编码合成图像信号的第一编码器5和通过D / D转换高效率地编码PCM图像数据的第二编码器6通过PCM传输线7相互连接。编码器5将55个预定时间和电平到合成图像信号的水平同步信号的前沿，其被钳位在预定电平并且A / D转换53以发送编码图像数据。另一方面，代码6在字同步之后检测由编码器5加上的水平同步信号的前沿部分的预定电平，并且将电平检测时间位置确定为水平同步信号时间位置，由此检测水平同步信号。然后，相对于所接收的编码图像数据，减法电路64在水平同步信号的控制下对编码器的相加进行相反的减法，以消除先前添加的电平，高效编码电路65抑制冗余，使得高效率编码图像数据以基于水平同步信号构成的发送帧发送。

5. 发明专利

JPS5731277A Image and sound simultaneous transmitting system 失效
标题翻译：图像和声音同时传输系统
公开(公告)号：JPS5731277A
公开(公告)日：1982-02-19
申请号：JP10694280
申请日：1980-08-04
申请人： Nec Corp , Nippon Telegr & Teleph Corp
发明人： IIJIMA HIROSHI , SHIMOYAMA HARUO , AIKOU HIROAKI
IPC分类号： H04N7/00 , H04N7/04 , H04N7/045 , H04N7/085 , H04N19/00
CPC分类号： H04N7/085
摘要： PURPOSE:To facilitate easy establishment of the word synchronism, by sampling and coding the voice signal with the aural signal coding clock obtained by dividing the picture signal coding clock. CONSTITUTION:A circuit 2 separates and delivers the horizontal sysnhronous signal from a composite picture signal 1. In addition to this circuit, a picture coding circuit 3 of the input picture signal is provided along with a control circuit that produces a special code 51 for word synchronism and a coding stop signal 52 in response to a horizontal synchronous signal 21. Furthermore the following circuits are added: a coding circuit for an input voice signal 15; a sending time control circuit 17 of the aural code; a transmission data switching circuit 8; a parallel-series converting circuit 9 of a code word 80; and a clock generating circuit 10 that supplies sampling clocks 11 and 14 of the picture and voice respectively and then supplies a transmission line clock 12.
摘要翻译：目的：为了方便容易地建立单词同步，通过对通过划分图像信号编码时钟获得的听觉信号编码时钟对语音信号进行采样和编码。构成：电路2从复合图像信号1分离并传送水平系统信号。除了该电路，输入图像信号的图像编码电路3与产生用于字的特殊代码51的控制电路一起提供同步信号和编码停止信号52。此外，增加以下电路：输入语音信号15的编码电路; 听觉代码的发送时间控制电路17; 发送数据切换电路8; 代码字80的并行串行转换电路9; 以及时钟发生电路10，分别提供图像和声音的采样时钟11和14，然后提供传输线时钟12。

6. 发明专利

JPH01226234A DSI-ADPCM EQUIPMENT 失效
公开(公告)号：JPH01226234A
公开(公告)日：1989-09-08
申请号：JP5062188
申请日：1988-03-05
申请人： NEC CORP
发明人： SHIMOYAMA HARUO
IPC分类号： H04J3/17 , H04J3/12
摘要： PURPOSE:To secure without waste the number of transmission line channels which can actually be used and to improve quality and transmission efficiency by adaptively increasing/reducing time slots for signalling information transmission in accordance with the number of the channels on the side of a trunk, which are to be transmitted. CONSTITUTION:A signalling information bit designation part 12 designates signalling information corresponding to the channel which has to transmit, and it controls a signalling format conversion part 13. Thus, only information required is extracted from signalling information of the ST time slot and is transmitted to a multiplex part 9. On the other hand, sound PCM data is converted into a data format which is convenient for a DSI/ADPCM processing in a multiplex part 6, and only a significant sound signal is inserted into an idle line in a DSI processing part 7. Thus, a necessary transmission rate is reduced and an ADPCM conversion part 8 executes coding into 32kbps, whereby it is added to a multiplex part 9. The transmission line channel which can be used as PSI/ADPCM is set in a transmission line channel setting part 14.

7. 发明专利

JPH01188134A ERROR DETECTION SYSTEM FOR PRIVACY COMMUNICATION 失效
公开(公告)号：JPH01188134A
公开(公告)日：1989-07-27
申请号：JP1087588
申请日：1988-01-22
申请人： NEC CORP
发明人： SHIMOYAMA HARUO
IPC分类号： H04L1/00 , H04L9/08
摘要： PURPOSE:To detect an error of privacy communication by generating a test pattern, using 1st key information string to apply cryptographic processing, sending the result, allowing a reception section to decode a test pattern by the cryptographic decoding process, applying parity check to discriminate whether or not the transmission of the test pattern is applied normally. CONSTITUTION:A test pattern generating means 13 in the transmission section generates a predetermined length of test pattern and adds it to the parity bit insertion means 14. After an even or odd number parity is added to the test pattern, the result is given to the test pattern cryptographic means 15, the information is subjected to cryptographic processing by using the 1st key information string from the 1st key information string generating means 7, and a multiplex frame constituting means 16 multiplexes the cryptographic message, the cryptographic 1st key, 2nd key ID and a cryptographic test pattern based on a predetermined transmission line frame format and sends the result to the transmission line. A parity check means 25 in the reception section check an even or an odd parity and an error discrimination means 26 checks the error.

8. 发明专利

JPS59181740A Digital speech interpolation system 失效
标题翻译：数字语音插值系统
公开(公告)号：JPS59181740A
公开(公告)日：1984-10-16
申请号：JP5453283
申请日：1983-03-30
申请人： Nec Corp
发明人： SHIMOYAMA HARUO
IPC分类号： H04J3/17 , H04J3/16
CPC分类号： H04J3/1688
摘要： PURPOSE:To transmit the signal on an overloaded channel by a simple processing without causing remarkable deterioration of quality, by multiplexing an ADPCM-encoded overload channel to a usual DSI channel, and transmitting it. CONSTITUTION:An output PCM signal from a voice memory 10 is applied to a time adjusting circuit 13 and an ADPCM encoding circuit 14, an ADPCM encoding of a corresponding channel is executed basing on an overload channel control signal applied through a signal line 73 from an assignment controlling circuit 7, an 8-bit PCM is brought to 4-bit ADPCM encoding, and thereafter, it is applied to a transmission line frame forming circuit 15 through a signal line 141. A PCM signal train which is subjected to a time adjustment of a time portion required for an ADPCM encoding processing is applied from a time adjusting circuit 13 to the transmission line frame forming circuit 15, and also an assignment state encoding signal is applied from an assignment state encoding circuit 12, too. These signals are multiplexed in accordance with a transmission line frame constitution determined in advance, and sent out to a DSI signal output terminal 16 through a signal line 151.
摘要翻译：目的：通过简单的处理，在重载信道上传输信号，不会导致质量下降，通过将ADPCM编码的过载信道复用到通常的DSI信道，并将其传输。构成：来自语音存储器10的输出PCM信号被施加到时间调整电路13和ADPCM编码电路14，基于通过信号线73施加的过载信道控制信号来执行相应信道的ADPCM编码分配控制电路7，将8位PCM进行4位ADPCM编码，然后通过信号线141被应用于传输线帧形成电路15.一种经受时间调整的PCM信号串 ADPCM编码处理所需的时间部分从时间调整电路13应用到传输线帧形成电路15，并且分配状态编码信号也从分配状态编码电路12应用。这些信号根据预先确定的传输线帧结构被复用，并通过信号线151发送到DSI信号输出端16。

9. 发明专利

JPS63151136A PRIVACY COMMUNICATION SYSTEM 失效
公开(公告)号：JPS63151136A
公开(公告)日：1988-06-23
申请号：JP29924186
申请日：1986-12-15
申请人： NEC CORP
发明人： SHIMOYAMA HARUO
IPC分类号： H04L9/16
摘要： PURPOSE:To change a cipher key with a simple means by providing a transmission part which ciphers a signal ciphered with a key information string and transmits it to the external and a reception part which deciphers this ciphered signal. CONSTITUTION:A key information string generating circuit 1i generates the key information string in accordance with an algorithm preliminarily determined on the basis of the cipher key sent from a key storage circuit 1h and sends this string to a ciphering circuit 1j. A normal sentence d1 to be ciphered is supplied to the ciphering circuit 1j, and a ciphered sentence d2 is obtained by the exclusive OR operation between the key information string and the normal sentence. A key ID (identification number) reception circuit 2f receives the key ID signal from a terminal 2c at the reference timing of a reception part 2 and sends it to a key storage circuit 2h. The cipher key is read out and is sent to a key information string generating circuit 2i. The key information string generated in accordance with an algorithm preliminarily determined on the basis of the cipher key is sent to a deciphering circuit 2j, and the ciphered sentence d2 is deciphered to the normal sentence d1 by the exclusive OR operation between the key information string and the ciphered sentence d2 received from a terminal 2b, and this sentence is outputted.

10. 发明专利

JPS62260198A METHOD AND APPARATUS FOR MEASURING VOICE DETECTION TIME 失效
公开(公告)号：JPS62260198A
公开(公告)日：1987-11-12
申请号：JP10407886
申请日：1986-05-06
申请人： NEC CORP
发明人： SHIMOYAMA HARUO
IPC分类号： G10L15/04 , G10L11/00 , G10L11/02 , G10L13/00 , G10L15/00 , G10L17/00 , G10L25/00 , G10L25/03 , G10L25/78 , H04B17/00 , H04J3/17

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