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1. 发明专利

JPS60258761A PULSE REPRODUCTION CIRCUIT FOR DIGITAL MAGNETIC RECORDING 失效
公开(公告)号：JPS60258761A
公开(公告)日：1985-12-20
申请号：JP11300084
申请日：1984-06-04
申请人： HITACHI LTD , HERCULES INC
发明人： MICHIKAWA YUUICHI , MITA SEIICHI , UMEMOTO MASUO , SHIONO HIROSHI , ETOU YOSHIZUMI
IPC分类号： G11B20/10 , H04N5/91 , H04N5/92

2. 发明专利

JPS5991761A MAXIMUM LIKELIHOOD DECODER 失效
公开(公告)号：JPS5991761A
公开(公告)日：1984-05-26
申请号：JP20042682
申请日：1982-11-17
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： ETOU YOSHIZUMI
IPC分类号： H03M5/04 , G11B20/10 , H03M5/16 , H03M5/18 , H04L25/06 , H04L25/08 , H04L25/49
摘要： PURPOSE:To simplify the circuit and to attain high speed operation of the circuit by using a difference between likelihoods of two state at a state estimating section of the maximum likelihood decoder. CONSTITUTION:A receiving value yn at an input terminal 12 is converted into a binary code at an A/D converter 13 and quantized into 4-bit. In taking a likelihood m0(n) where a ternary signal goes to +1 at a time (n) and goes to (0) or -1 at a time (n+1), and a likelihood mE(n) where the signal goes to -1 at a time (n) and (0) or +1 at (n+1), the difference of the likelihoods DELTAm(n)=m0(n)- me(n) has only a half the amplitude of the yn and becomes 3-bit, and total 7-bit of the yn and the DELTAm(n) is applied to an address input to an ROM 14. The ROM 14 outputs the difference of likelihoods DELTAm(n+1) in 3-bit after one data period, a change d0(n+1) in 1-bit and a dE(n+1) in total 5-bit. The DELTAm(n+1) is stored temporarily at each period of data to a latch 15 of 3-bit and used as the address input of the ROM at the next time. The d0(n+1) and dE(n+1) are outputted from terminals 16, 17 and used as the input to a decoding value estimating section.

3. 发明专利

JPS58181348A Error correcting and detecting device 失效
标题翻译：错误校正和检测设备
公开(公告)号：JPS58181348A
公开(公告)日：1983-10-24
申请号：JP3891483
申请日：1983-03-11
申请人： Hitachi Denshi Ltd , Hitachi Ltd
发明人： TAKIZAWA MASAAKI , HIRANO YASUHIRO , ETOU YOSHIZUMI
IPC分类号： H04N5/94 , G11B20/12 , H03M13/00 , H03M13/27 , H04L1/00
CPC分类号： H04L1/0071
摘要： PURPOSE:To attain the error correction and detection of digital information, by performing interleaving with a method that a burst error remains even after the interleaving and using a burst error correcting code for the result. CONSTITUTION:An error correcting and detecting device consists of a coder 1, a decoder 2, a signal transmission line or a memory 3, an input terminal 4 for digital information and an output terminal 5. The coder for error correction codes is a device producing a code word having a redundancy of information under a certain rule. If there is any error in the code word, the reguiarity is disturbed. The decoder is a device which detects the disturbance and corrects the error based on it. A part corresponding to the coder 1 is provided with a check point addition circuit 6 and an interleave circuit 7, and a part corresponding to the decoder 2 is provided with a reverse interleave circuit 8 and an error correction circuit 9.
摘要翻译：目的：为了实现数字信息的纠错和检测，通过使用即使在交错之后仍然保持脉冲串错误的方法并且使用用于该结果的脉冲串纠错码进行交织。构成：纠错检测装置包括编码器1，解码器2，信号传输线或存储器3，用于数字信息的输入端4和输出端5。用于纠错码的编码器是产生具有特定规则下的信息冗余的码字。如果代码字中有任何错误，那么reguiarity是不安的。解码器是一种检测干扰的装置，并且基于它来校正错误。对应于编码器1的部分设置有校验点加法电路6和交错电路7，并且对应于解码器2的部分设置有反向交错电路8和纠错电路9。

4. 发明专利

JPS57123715A Transversal type filter 失效
标题翻译：横向型过滤器
公开(公告)号：JPS57123715A
公开(公告)日：1982-08-02
申请号：JP20371381
申请日：1981-12-18
申请人： Hitachi Ltd
发明人： ETOU YOSHIZUMI
IPC分类号： H03H15/02 , H03H17/06
CPC分类号： H03H15/02
摘要： PURPOSE:To drive a coefficient at a low speed with wide linear range, by outputting an analog signal by weighting and adding the outputs of devices which output the sum by selecting values of analog memories in accordance with respective stages of digital memories. CONSTITUTION:An analog signal from an input 11 is transferred into an N-stage shift register SR13 by a clock from an input 12. A digital coefficient value 1 or 0 from an input 14 is transferred into the N-stage SR16 by a clock from an input 15. A switch 17 short-circuits only the stages, having 1, of the SR16 to select the values of the corresponding stages of the SR13, and the sum of signals selected by an adder 18 is outputted to a terminal 19. Then, M units of the above-mentioned devices 20 are provided, and the analog signal and clock supplied to inputs 21 and 22 are applied to each device 20 in common to transfer analog signals simultaneously. An analog coefficient value is converted by an A/D converter 23 into a binary code signal, which is applied to the terminal 14 of each device 20 to be transferred simultaneously by a clock from an input 25. Analog signals selected by the respective devices 20 are weighted by resistances and added at a part 27 to output the sum from a terminal 28.
摘要翻译：目的：为了以较宽的线性范围驱动低速系数，通过加权输出模拟信号，并根据数字存储器的各个级别选择模拟存储器的值，输出相加的输出。构成：来自输入端11的模拟信号通过来自输入端12的时钟传送到N级移位寄存器SR13中。来自输入端14的数字系数值1或0通过时钟来传送到N级SR16 一个输入端15.开关17仅使SR16的具有1个级的SR短路，以选择SR13的相应级的值，并将由加法器18选择的信号的和输出到端子19.然后，，提供上述装置20的M个单元，并且提供给输入21和22的模拟信号和时钟被共同地施加到每个装置20以同时传送模拟信号。模拟系数值由A / D转换器23转换成二进制码信号，该二进制码信号通过来自输入端25的时钟同时传送到每个装置20的端子14。由各个装置20选择的模拟信号通过电阻进行加权，并且在部分27处添加以从终端28输出和。

5. 发明专利

JPS5539493A AFTERRIMAGE CORRECTION DEVICE 失效
公开(公告)号：JPS5539493A
公开(公告)日：1980-03-19
申请号：JP10398679
申请日：1979-08-17
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： ETOU YOSHIZUMI , FUKINUKI NORIHIKO
IPC分类号： H04N5/14 , H04N5/217
摘要： PURPOSE:To secure the correction for the after-image over a wide range by giving processing to the output signals of the pickup tube via the frame or the field memory and then adding the coefficient to the present signal of the pickup tube output as well as to the 1-frame preceding input or output signal. CONSTITUTION:Signal SO to be applied to input terminal 1 is applied to frame memory 2 to be delayed, and 1-frame preceding signal S-1 is delivered to be applied to coefficient circuit 3 and then to deliver signal S-1K to the output. Signal S-1K is then supplied to subtractor 4 to deliver signal S'O which gave correction to the after-image given from output terminal 5. The input signal of such compositon is used as the 1st TV signal, and the coefficient to be added to this TV signal is set to 1. Otherwise coefficients K'+1 and K' are added to present signal SO and 1- frame preceding signal S-1 each at coefficient circuits 7 and 6. And the relation between coefficients K and K' is set as K'=1/(1-K), and the signal which gave correction to the after-image is delivered through terminal 5.

6. 发明专利

JPS5432051A CORRECTOR FOR TRANSMISSION LINE DISTORTION 失效
公开(公告)号：JPS5432051A
公开(公告)日：1979-03-09
申请号：JP9788677
申请日：1977-08-17
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ETOU YOSHIZUMI , HIRANO YASUHIRO , SUNADA MASAYOSHI , SHIMIZU HARUMITSU , HORIUCHI YOSHIO
IPC分类号： H03H21/00 , H04B3/10 , H04B3/14
摘要： PURPOSE:To omit the complicated arithmetic process by detecting the maximum maximum or minimum value of the receiving step signal and then varying the frequency property of the correcting means so that the detected value may be close to the fixed value.

7. 发明专利

JPS5313864A RECEIVER 失效
公开(公告)号：JPS5313864A
公开(公告)日：1978-02-07
申请号：JP8728276
申请日：1976-07-23
申请人： HITACHI LTD
发明人： ETOU YOSHIZUMI , HIRANO YASUHIRO
IPC分类号： H03D1/24 , H03J7/02 , H04B1/26 , H04L27/06
摘要： PURPOSE:To reduce the residual phase error in the reference carrier and to decrease the orthogonal distortion in the synchronous detecting signal, by making the residual side band VSB filter characteristics not effective to the reference carrier.

8. 发明专利

JPS5291314A IMAGE PICKKUP DEVICE 失效
公开(公告)号：JPS5291314A
公开(公告)日：1977-08-01
申请号：JP747776
申请日：1976-01-28
申请人： HITACHI ELECTRONICS , HITACHI LTD
发明人： ETOU YOSHIZUMI , MARUYAMA EIICHI
IPC分类号： H01L27/146 , H04N1/028 , H04N1/12 , H04N5/30 , H04N5/335 , H04N5/374
摘要： PURPOSE:To reduce the size of a uni-dimensional image pick-up device for facsimile use by realizing a large photo-receptive element thereby eliminating the need of an optical system.

9. 发明专利

JPS5239305A CODE TRANSMISSION SYSTEM 失效
公开(公告)号：JPS5239305A
公开(公告)日：1977-03-26
申请号：JP11475175
申请日：1975-09-25
申请人： HITACHI ELECTRONICS , HITACHI LTD
发明人： ETOU YOSHIZUMI
IPC分类号： H04L27/02 , H04L27/06
摘要： PURPOSE:To make it possible to decode original codes, with a simple composition, by shaping with clocks which correspond to transmitting codes.

10. 发明专利

JPS59131263A Image pickup device 失效
标题翻译：图像拾取器件
公开(公告)号：JPS59131263A
公开(公告)日：1984-07-28
申请号：JP22202283
申请日：1983-11-28
申请人： Hitachi Ltd
发明人： ETOU YOSHIZUMI , MARUYAMA EIICHI
IPC分类号： H04N1/028 , H01L27/146 , H04N1/031
CPC分类号： H04N1/031
摘要： PURPOSE:To obtain a signal by forming many large size photosensitive elements with a photosensitive layer made of antimony trisulfide, amorphous selenium or the like, photoelecting a reflected light from an original face at the photosensitive elements, and reading sequentially the electric signal generated therefrom by a switch. CONSTITUTION:Electrodes 2 separated in the form of stripes, the photosensitive layer 3 thereupon and an electrode 4 thereupon are formed on a substrate 1. The stripe electrodes 2 are connected to a scanning section 5 comprising shift registers and switches one by one by a jumper 6. A photoconductive layer made of, e.g., antimony trisulfide or an amorphous photodiode layer made of amorphous selenium is used as the photosensitive layer 3. Only a component of light reflected on an original 13 among the lights applied from a light source 14 in contact with the original 13 and at the back side of the substrate 1 is received onto the photosensitive layer 3 via a spacer 12 and a transparent electrode 4. The light source 14 supplies light from the surface of the spacer 13 at an angle in the degree that the incident light is not reflected fully. An average luminous amount near the exposed electrode 4 among the reflected lights from the original face is converted into an electric signal at the photosensitive layer.
摘要翻译：目的：通过用由三氧化锑，非晶硒等形成的感光层形成许多大尺寸的感光元件来获得信号，从感光元件的原始面光电选择反射光，并依次读取由其产生的电信号。一个开关构成：以条纹形式分离的电极2，其上的感光层3和其上的电极4形成在基板1上。条状电极2通过跳线逐个连接到包括移位寄存器和开关的扫描部分5 使用由例如三氧化锑或由非晶硒制成的非晶光电二极管层制成的光电导层作为感光层3.仅在从接触光源14施加的光中的原件13上反射的光的分量原始13和基板1的背面通过间隔件12和透明电极4被接收到感光层3上。光源14以间隔件13的表面的角度以入射光不能完全反射。来自原始面的反射光中的曝光电极4附近的平均发光量在感光层被转换为电信号。

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