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1. 发明授权

US4675868A Error correction system for difference set cyclic code in a teletext system 失效
标题翻译：图文电视系统差分集循环码误差校正系统
公开(公告)号：US4675868A
公开(公告)日：1987-06-23
申请号：US716044
申请日：1985-03-26
申请人： Hirohisa Shishikura , Ichiro Sase , Akio Yanagimachi , Osamu Yamada
发明人： Hirohisa Shishikura , Ichiro Sase , Akio Yanagimachi , Osamu Yamada
IPC分类号： H03M13/43 , H04N7/035 , G06F11/10
CPC分类号： H04N7/0357 , H03M13/43
摘要： An error correction system for a difference set cyclic (272,190) code with 190 data bits and 82 test bits in a coded transmission teletext system which transmits character information on the vertical blanking interval of a television signal has been improved in peripheral circuits for operating an error correction circuit. A first improvement is to correct only designated packets which are in frame synchronization condition and/or designated by an index register. A second improvement is to handle shortened (L,k) code where L is less than 272, using common hardware. A third improvement is selection of three operational modes of data to be corrected. In the first mode, uncorrected data is supplied by an external circuit, and said uncorrected data is stored temporarily in a buffer memory, and corrected data is stored in said buffer memory again to supply external circuit corrected data. Transfer of data between the buffer memory and the error correction circuit is handled by wired logic hardware apparatus. In a second mode, uncorrected data and corrected data are provided in a buffer memory but no external circuit is concerned in operation of the present system. In a third mode, no buffer memory is used, and an external circuit supplies uncorrected data to an error correction circuit directly and receives corrected data directly from the error correction circuit.
摘要翻译：在用于在电视信号的垂直消隐间隔上发送字符信息的编码的传输图文电视系统中具有190个数据位和82个测试位的差分循环（272,190）码的纠错系统已被改进，用于操作错误校正电路。第一改进是仅校正处于帧同步状态的指定分组和/或由索引寄存器指定的分组。第二个改进是使用通用硬件来处理L小于272的缩短（L，k）码。第三个改进是选择要纠正的三种数据操作模式。在第一模式中，未校正的数据由外部电路提供，并且所述未校正的数据被临时存储在缓冲存储器中，并且校正的数据被再次存储在所述缓冲存储器中以提供外部电路校正的数据。缓冲存储器和纠错电路之间的数据传输由有线逻辑硬件设备来处理。在第二模式中，未校正的数据和校正数据被提供在缓冲存储器中，但是在本系统的操作中没有外部电路。在第三模式中，不使用缓冲存储器，并且外部电路将未校正的数据直接提供给纠错电路，并直接从纠错电路接收校正数据。

2. 发明授权

US4672612A Error correction system in a teletext system 失效
标题翻译：图文电视系统中的纠错系统
公开(公告)号：US4672612A
公开(公告)日：1987-06-09
申请号：US716027
申请日：1985-03-26
申请人： Hirohisa Shishikura , Ichiro Sase , Akio Yanagimachi , Osamu Yamada , Shigeharu Ueguri
发明人： Hirohisa Shishikura , Ichiro Sase , Akio Yanagimachi , Osamu Yamada , Shigeharu Ueguri
IPC分类号： H03M13/43 , H04N7/035 , G06F11/10
CPC分类号： H04N7/0357 , H03M13/43
摘要： An error correction system for a difference set cyclic (272, 190) code with 190 data bits and 82 test bits in a packet which is transmitted on a vertical blanking interval of a television signal has been improved. The present system comprises a buffer memory for storing an original data which is subject to correction and corrected data, and an error correction circuit having at least a syndrome register, a majority circuit and a data register. The data transfer between the buffer memory and the error correction circuit is effected by wired logic hardware means without using software operation time of a programmed computer so that computer operation time is not wasted merely for error correction. A correction number counter is provided for counting the number of corrected bits for adjusting the threshold level for determining 1 or 0 of a reception signal, adjusting criterion of operation of the majority circuit in the error correction circuit, and the stopping of error correction operation in case of too many errors.
摘要翻译：已经提高了在电视信号的垂直消隐间隔上发送的分组中具有190个数据位和82个测试位的差分循环（272,190）码的纠错系统。本系统包括用于存储经受校正的原始数据和校正数据的缓冲存储器，以及至少具有校正子寄存器，多数电路和数据寄存器的纠错电路。缓冲存储器和纠错电路之间的数据传输由有线逻辑硬件装置实现，而不需要编程计算机的软件操作时间，从而仅仅为纠错而不浪费计算机操作时间。提供校正数计数器，用于对用于调整用于确定接收信号的1或0的阈值电平的校正位数进行计数，调整误差校正电路中的多数电路的操作标准以及错误校正操作的停止遇到太多错误。

3. 发明授权

US5319602A Combination of a printed wiring board and a memory device selecting circuit 失效
标题翻译：印刷线路板和存储器件选择电路的组合
公开(公告)号：US5319602A
公开(公告)日：1994-06-07
申请号：US930172
申请日：1992-08-17
申请人： Hirohisa Shishikura
发明人： Hirohisa Shishikura
IPC分类号： G11C11/41 , G06F12/06 , G11C8/00 , G11C8/12 , H05K1/00 , G11C5/06 , H01L27/10
CPC分类号： G11C8/12 , H05K1/029 , H05K1/0295 , H05K2201/09954 , H05K2201/10212
摘要： In a combination of a printed wiring board and a memory device selecting circuit provided on the printed wiring board, the printed wiring board is provided with a predetermined number of device mount areas and a conductor pattern for connection with memory devices in the device mount areas. The number of the memory devices actually mounted in the mount areas is set in a device-number setting device, and in accordance with a predetermined bits of address code and on the basis of the number set, device select signals are produced, and are distributed over the conductor pattern. Identical printed wiring boards and memory device selecting circuits can be used, without alteration or re-designing, for forming electronic devices having different memory capacities or different number of memory devices.
摘要翻译：印刷电路板与设置在印刷电路板上的存储器件选择电路的组合中，印刷电路板设置有预定数量的器件安装区域和用于与器件安装区域中的存储器件连接的导体图案。实际安装在安装区域中的存储器件的数量被设置在器件编号设置器件中，并且根据地址代码的预定位，并且基于数字组，产生器件选择信号并且被分布超过导体图案。可以使用相同的印刷线路板和存储器件选择电路，而不需要改变或重新设计，用于形成具有不同存储容量或不同数量的存储器件的电子器件。

4. 发明授权

US3956758A Warning device for photographic cameras 失效
标题翻译：照相机警告装置
公开(公告)号：US3956758A
公开(公告)日：1976-05-11
申请号：US492879
申请日：1974-07-29
申请人： Saburo Numata , Iwao Sagara , Hirohisa Shishikura
发明人： Saburo Numata , Iwao Sagara , Hirohisa Shishikura
IPC分类号： G03B7/26 , G03B17/02 , G03B17/18 , G03B17/20
CPC分类号： G03B17/20 , G03B17/02
摘要： An exposure indicating means comprising a plurality of light emitting elements which are selectively energized to indicate exposure information in a digital form is connected with an exposure measuring circuit. The light emitting elements are connected with a warning circuit. The warning circuit comprises a warning signal generator which generates a warning signal when a warning is required, a square wave generator which constantly generates a square wave and an AND circuit which transmits the square wave to the light emitting elements when the warning signal is transmitted thereto. The light emitting elements are intermittently turned off by the square wave coming from the AND circuit. The frequency of the square wave is selected so that the intermittent turning off of the light emitting elements is sensed by the photographer viewing through the viewfinder of the camera.
摘要翻译：曝光指示装置与曝光测量电路连接，该曝光指示装置包括选择性地通电以指示数字形式的曝光信息的多个发光元件。发光元件与警告电路连接。报警电路包括警告信号发生器，当需要警告时产生报警信号，一个不断产生方波的方波发生器和当发送警告信号时向发光元件发送方波的“与”电路。发光元件被来自“与”电路的方波间断地关闭。选择方波的频率，使得通过摄像机的取景器观看的摄影者感测到发光元件的间歇关闭。

5. 发明授权

US3955892A Device for indicating exposure information in the viewfinder of a camera 失效
标题翻译：用于在相机的取景器中指示曝光信息的装置
公开(公告)号：US3955892A
公开(公告)日：1976-05-11
申请号：US492840
申请日：1974-07-29
申请人： Saburo Numata , Iwao Sagara , Hirohisa Shishikura
发明人： Saburo Numata , Iwao Sagara , Hirohisa Shishikura
IPC分类号： G03B17/18 , G03B17/20 , G01J1/42 , G03B7/08
CPC分类号： G03B17/20
摘要： Light emitting elements such as light emitting diodes provided in the viewfinder of a camera are connected with a light measuring circuit including a photodetector through an A-D converter, a decoder and a gate circuit so that the light emitting elements may indicate exposure information in a digital form in accordance with the output of the light measuring circuit. An oscillator is connected with the A-D converter and the gate circuit for giving sampling pulses to the A-D converter and clock pulses to the gate circuit. Between the oscillator and the gate circuit is provided a duty modulator to change the duty cycle of the square wave transmitted from the oscillator to the gate circuit. The duty modulator is connected with the light measuring circuit or the A-D converter so as to control the duty cycle of the square wave in accordance with the output from the light measuring circuit. the brightness of the light emitting elements in the viewfinder is controlled so as to be proportional to the brightness of the image viewed through the viewfinder.
摘要翻译：设置在摄像机的取景器中的发光二极体等发光元件通过AD转换器，解码器和门电路与包括光电检测器的光测量电路连接，使得发光元件可以以数字形式指示曝光信息按照测量电路的输出。振荡器与A-D转换器和门电路连接，用于向A-D转换器提供采样脉冲，并向门电路提供时钟脉冲。在振荡器和门电路之间提供了一个占空比调制器来改变从振荡器传输到门电路的方波的占空比。负载调制器与光测量电路或A-D转换器连接，以根据光测量电路的输出来控制方波的占空比。将取景器中的发光元件的亮度控制成与通过取景器观看的图像的亮度成比例。

6. 发明授权

US3932865A Analog-to-digital converter 失效
标题翻译：模数转换器
公开(公告)号：US3932865A
公开(公告)日：1976-01-13
申请号：US472480
申请日：1974-05-22
申请人： Iwao Sagara , Hirohisa Shishikura , Ikuo Anada
发明人： Iwao Sagara , Hirohisa Shishikura , Ikuo Anada
IPC分类号： H03M1/00 , H03K13/02
CPC分类号： H03M1/361
摘要： An accurate, simple and compact analog-to-digital converter has been found. The converter comprisesA voltage divider circuit including a plurality of stepped voltage dividing points separated by a plurality of resistors for dividing the input voltage received from the analog input terminal;A group of switches for receiving said divided voltages; andA switching decision circuit for determining the amplitude of the voltage from a decision point through said switch group, the output of said decision circuit being applied to a logic circuit to provide digital signal output.
摘要翻译：已经发现了一种精确，简单和紧凑的模数转换器。该转换器包括一个包含多个电压分压点的电压分流器电路，该电压分压点由多个电阻分开，用于分配从模拟输入端子接收的输入电压; 一组用于接收上述分压的开关; 以及用于通过开关组决定电压的电压幅度的开关决策电路，用于提供数字信号输出的逻辑电路的确定电路的输出。

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