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101. 发明专利

JPS5799007A VOLTAGE CONTROLLED VARIABLE FREQUENCY OSCILLATOR 失效
公开(公告)号：JPS5799007A
公开(公告)日：1982-06-19
申请号：JP17470280
申请日：1980-12-12
申请人： FUJITSU LTD
发明人： YAMASHITA ATSUSHI , AKIYAMA RIYOUTA
IPC分类号： H03B28/00 , G06F1/03
摘要： PURPOSE:To achieve a sinusoidal wave output with wide frequency changing width, low distortion and high S/N, by storing each sample value of sinusoidal waveform sampled with a prescribed interval and reading out it at every address interval corresponding to a control voltage. CONSTITUTION:A control voltage V1 is converted into a digital value at an AD converter 1 and set to a latch circuit 2. The content of the latch circuit 2 and a latch circuit 5 is added with an adder 3 at every clock period Tc with clock pulses CP and to a latch circuit 4. The content of the latch circuit 4 is used as an address data of a waveform storage device 6, and a sample value of sinusoidal waveform stored in the device 6 is read out and converted into an analog voltage at a DA converter 8 and outputted as a sinusoidal wave signal V2 via a low-pass filter 9 and a buffer amplifier 10.

102. 发明专利

JPS56135895A DIGITAL NOISE GENERATOR FOR ELECTRONIC MUSIC INSTRUMENT 失效
公开(公告)号：JPS56135895A
公开(公告)日：1981-10-23
申请号：JP2364181
申请日：1981-02-19
申请人： KAWAI MUSICAL INSTR MFG CO
发明人： RARUFU DOITSUCHIE , RESURII JIEI DOITSUCHIE
IPC分类号： G10H7/08 , G06F1/03 , G10H1/42 , G10H7/00

103. 发明专利

JPS5688138A FORMING METHOD OF MEMORY TABLE 失效
公开(公告)号：JPS5688138A
公开(公告)日：1981-07-17
申请号：JP16553979
申请日：1979-12-21
申请人： DAINIPPON SCREEN MFG
发明人： OKADA FUMIO
IPC分类号： G03F3/08 , G06F1/02 , G06F1/03 , G06T1/20 , G06T5/00 , H04N1/407 , H04N1/60
摘要： PURPOSE:To enable a memory table to be rapidly set up with a small-capacity memory by forming a group of polygonal line data of a characteristic curve for digital color scanning by the combination of the contents of both basic and correction tables. CONSTITUTION:Corresponding basic area 11 is read out of the basic table of polygonal line data memory device 10 by area selecting means 19 of table forming device 8, and it is applied to polygonal line approximate function generator 12. Generator 12 accesses correction memory device 13 of a correction table and generates a polygonal line function corresponding to area 11. This function and a correction function in block 17 of device 13 corresponding to the address of generator 12 selected with table selecting means 18 are arithmetically combined with each other in adding and subtracting circuit 14 and written in memory device 1 forming a polygonal line group table. By the combination of the contents of the main and auxiliary tables polygonal line group data are formed. Thus, rapid setup fit for desired color scanning is carried out with such main and secondary memory tables of small capacity.

104. 发明专利

JPS55136704A GENERATION CIRCUIT OF DIGITAL SINUSOIDAL WAVE 失效
公开(公告)号：JPS55136704A
公开(公告)日：1980-10-24
申请号：JP4465879
申请日：1979-04-12
申请人： NIPPON ELECTRIC CO
发明人： NISHITANI TAKAO
IPC分类号： H03B28/00 , G06F1/03
摘要： PURPOSE:To improve the digital signal generator in which desired frequencies can accurately be obtained if an integer ratio is established between the advance clock and the fundamental frequency, by adding or replacing a simple hardware in addition to the conventional method of 2N as modulas. CONSTITUTION:Taking the address of the modulas M operation ROM3 as i and the content as k, these relations are k=1 when i

105. 发明专利

JPS5577094A ADDRESS GENERATING METHOD 失效
公开(公告)号：JPS5577094A
公开(公告)日：1980-06-10
申请号：JP15049978
申请日：1978-12-07
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： TAKAHASHI MICHIO , IWASE YASUMASA , KAWAGUCHI MASAHARU , HASEGAWA KOUICHI , HIROSE KAZUTO
IPC分类号： G10H7/00 , G06F1/03 , G11C21/00
摘要： PURPOSE:To generate two sine-wave cosine-wave signals using sampled values for one period of one signal, by shifting a read start address by the fixed number of sampled values. CONSTITUTION:Memory 21 is stored with sampled values for one period of a sine- wave signal and according to an address signal from address generating circuit 3', sampled values in memory 21 are read out in the fixed order. To obtain sine-wave and cosine-wave signal of a desired frequency, initital-value setting memory 22 changes read start addresses of memory 21. In this way, when a ratio of the desired frequency to the frequency of a signal stored in memory 21 is sent to memory 4, address generating circuit 3' generates address signal S1 and as set values of initial- value setting memory 22 are changed, the desired sine-wave or cosine-wave signal is outputted from memory 21. Therefore, both sine-wave and cosine-wave signals can be obtained by signal memory 21.

106. 发明专利

JPS54144148A EXPONENTIAL CONVERSION TYPE HIGH SPEED MULTIPLYING SYSTEM 失效
公开(公告)号：JPS54144148A
公开(公告)日：1979-11-10
申请号：JP5074778
申请日：1978-05-01
申请人： KATAYAMA AISUKE
发明人： KATAYAMA AISUKE , ITOU JIYUNICHI
IPC分类号： G06F7/53 , G06F1/03 , G06F7/508 , G06F7/72

107. 发明专利

JPS54124645A RANDOM NUMBER GENERATOR 失效
公开(公告)号：JPS54124645A
公开(公告)日：1979-09-27
申请号：JP3268778
申请日：1978-03-20
申请人： NIPPON ELECTRIC CO
发明人： INOUE ICHIROU , KAWAKITA KENJI
IPC分类号： H03K3/84 , G06F1/03 , G06F7/58
摘要： PURPOSE:To supply a low-cost and simple random number generator by calculating previously sectional linear resemblance functions of probability distribution functions and expressing them in a table form and using this table to generate random numbers according to a specific probability distribution. CONSTITUTION:For vlaue q of one random number generated by a uniform random number generator, the linear section including value q is searched in a table by a table function calculating unit to obtain value f(xi) at the start point of corresponding linear section 1, corresponding variable value xi and reverse variable Hi of the inclination of the corresponding linear section, and xi+Hi(q-f(xi) is calculated to obtain value X. Next, in case that probability distribution is given in form f(ki(X-k2)), x/k1+k2 is calculated in a variable converter. By repeating the operation above, random numbers according to specific probability distribution f(ki(x-k2)) are obtained successively.

108. 发明专利

JPS54109735A CIRCULAR ARC SIGNAL GENERATING SYSTEM 失效
公开(公告)号：JPS54109735A
公开(公告)日：1979-08-28
申请号：JP1726178
申请日：1978-02-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSUGI MAKOTO , NAKANE KAZUNARI , TERANISHI TOSHIHARU , HIROYAMA MASAO
IPC分类号： G06F3/13 , G06F1/02 , G06F1/03 , G06F3/153 , G06T11/20 , G09G1/10 , G09G5/20
摘要： PURPOSE:To constitute the device which generates the circle or the circular arc of an optional radius with a reduced amount of memory amount by using the displacement data between two adjacent spots of the spot array on the circule circmference corresponding to several kinds of reference radiuses as the reference number tables of the x and y systems each. CONSTITUTION:ROM1 and 2 store the DELTAx and DELTAy coordinate data rows between two spots of the spot array on the circumference of several reference circles featuring different radiuses. In addition to these two ROM's, the following units are provided: radius data holding register 3 to hold the radius data given from outside; ROM data selector 11; address counter 9 which is connectd to start point angle and central angle data holding register 5 and 6 to select the coordinate displacement data of memory 1 and 2; multipliers 12 and 13 to give the multiplication to each coordinate displacement data selected through counter 9 as well as to the radius data held in register 3; and accumulators 14 and 15 to give the sequential addition or substraction to the multiplication results obtained by 12 and 13. Thus, a circular arc signal generator is constituted.

109. 发明专利

JPS4868980A 失效
公开(公告)号：JPS4868980A
公开(公告)日：1973-09-19
申请号：JP12776572
申请日：1972-12-21
IPC分类号： G05B19/08 , F02D41/24 , G05B11/26 , G05B15/02 , G06F1/03 , G06F7/62 , G06J1/00

110. 发明专利

JP6625943B2 情報処理装置有权
公开(公告)号：JP6625943B2
公开(公告)日：2019-12-25
申请号：JP2016151127
申请日：2016-08-01
申请人：株式会社日立製作所
发明人：菅野雄介 , 阪田健 , 大川雅司 , 小野豪一 , 山岡雅直
IPC分类号： H03K19/173 , G06F1/03

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