专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09241199B2 Announcement broadcasting system, announcement broadcasting optical receiver used for the announcement broadcasting system, cable television broadcasting system, and optical receiver used for the cable television broadcasting system 有权
标题翻译：公告广播系统，用于广播系统的公告广播光接收机，有线电视广播系统，以及用于有线电视广播系统的光接收机
公开(公告)号：US09241199B2
公开(公告)日：2016-01-19
申请号：US12029417
申请日：2008-02-11
申请人： Masayuki Abe , Shuzo Imai , Tetsuya Miki
发明人： Masayuki Abe , Shuzo Imai , Tetsuya Miki
IPC分类号： H04N7/10 , H04N21/81 , H04N7/20 , H04N21/443 , H04N21/488 , H04H20/59 , H04H20/69
CPC分类号： H04N21/814 , H04H20/59 , H04H20/69 , H04N7/10 , H04N7/20 , H04N21/4436 , H04N21/4882 , H04N21/8146
摘要： In a subscriber's facility of an announcement broadcasting system utilizing an optical fiber cable TV network, an announcement broadcasting optical receiver receiving an optical transmission signal of audio information and outputting an audio information electric signal for an announcement broadcasting terminal is provided. The announcement broadcasting optical receiver includes: a photo-detection section for converting the optical transmission signal into the audio information electric signal; a photoelectric conversion section, which is connected to the photo-detection section, for converting the optical transmission signal that the photo-detection section receives into electric energy; and an RF signal potential transformation section, to which the electric energy obtained by the photoelectric conversion section is supplied, for potential-transforming the audio information electric signal output from the photo-detection section to one at an input voltage level appropriate to the announcement broadcasting terminal and outputting it.
摘要翻译：提供了一种利用光纤有线电视网络的公告广播系统的用户设施，接收接收音频信息的光传输信号并输出用于通告广播终端的音频信息电信号的公告广播光接收机。公告广播光接收机包括：光检测部分，用于将光传输信号转换成音频信息电信号; 光电转换部，其连接到光检测部，用于将光检测部接收的光传输信号转换为电能; 以及RF信号电位变换部，由光电转换部获得的电能被供给到所述RF信号电位变换部，用于将从光检测部输出的音频信息电信号以适合于通知广播的输入电压电平变换为1 终端并输出。

2. 发明授权

US4047115A Sample pulse generating apparatus 失效
标题翻译：采样脉冲发生装置
公开(公告)号：US4047115A
公开(公告)日：1977-09-06
申请号：US743347
申请日：1976-11-19
申请人： Koichi Toda , Tetsuya Miki , Haruo Yamaguchi
发明人： Koichi Toda , Tetsuya Miki , Haruo Yamaguchi
IPC分类号： G01R13/34 , H03K5/19 , H03K5/18
CPC分类号： H03K5/19
摘要： A sample pulse generating apparatus is provided having an input signal supply circuit for supply an input signal with a high frequency to be sampled, a saw tooth wave generator for generating a saw tooth wave signal which is in synchronism with the input signal and has lower frequency than that of the input signal, a staircase signal generator for generating a staircase signal of which the voltage level is stepped up in synchronism with the occurrence of the saw tooth wave signal, a voltage comparator for receiving the saw tooth wave signal and the staircase wave signal and comparing them and producing a sampling signal when those signals coincide with each other, and an observation signal generator for generating an observation signal which is analogous in wave shape to the input signal and has lower frequency than that of the input signal, by sampling the input signal by the sampling pulses. The sample pulse generating apparatus further includes a counter for executing the count every occurrence of the sample pulse and a memory for previously storing in the order of the saw tooth wave signal generation the signals each with the magnitude corresponding to the time error of each sampling pulse occurrence due to non-linearity of the saw tooth wave signal and for successively generating digital correction signals each corresponding to the magnitude of each stored signal in response to the digital signal of the counter. The staircase signal to be applied to the voltage comparator is the sum of the output of the counter and the digital correction signal from the memory.
摘要翻译：一种采样脉冲发生装置，具有用于提供具有高采样频率的输入信号的输入信号供给电路，用于产生与输入信号同步的锯齿波信号的锯齿波发生器，具有较低频率用于产生与锯齿波信号的发生同步地升高电压电平的阶梯信号的阶梯信号发生器，用于接收锯齿波信号的电压比较器和阶梯波信号并比较它们，并且当这些信号彼此一致时产生采样信号;以及观测信号发生器，用于生成与输入信号类似的波形的观测信号，并且具有比输入信号的频率低的采样频率输入信号由采样脉冲。采样脉冲发生装置还包括用于每次出现采样脉冲执行计数的计数器和用于按锯齿波信号的顺序预先存储的存储器，每个具有对应于每个采样脉冲的时间误差的幅度的信号由于锯齿波信号的非线性而发生，并且响应于计数器的数字信号而连续产生每个对应于每个存储的信号的幅度的数字校正信号。要施加到电压比较器的阶梯信号是计数器的输出和来自存储器的数字校正信号的总和。

3. 发明授权

US4244045A Optical multiplexer and demultiplexer 失效
标题翻译：光复用器和解复用器
公开(公告)号：US4244045A
公开(公告)日：1981-01-06
申请号：US8161
申请日：1979-01-31
申请人： Kiyoshi Nosu , Hideki Ishio , Tetsuya Miki
发明人： Kiyoshi Nosu , Hideki Ishio , Tetsuya Miki
IPC分类号： G02B6/293 , G02B6/34 , G02B27/10 , H04J14/02 , H04B9/00
CPC分类号： G02B6/29367 , G02B6/2938 , H04J14/02
摘要： An optical multiplexer and/or optical demultiplexer for multiplexing and/or demultiplexing a plurality of wavelengths comprises a plurality of optical filters each of which transmits a predetermined wavelength and reflects other wavelengths, said optical filters being arranged so that an optical beam is transmitted or reflected via each optical filter in sequence in a zigzag fashion. A light source or light detector is provided behind each optical filter to project or receive a collimated optical beam. The angle of incidence when a beam is applied to an optical filter is small. And, another optical means is provided to connect the present optical multiplexer and/or demultiplexer with an outside optical fiber. The transmission wavelength of each optical filter is different from the others.
摘要翻译：用于复用和/或解复用多个波长的光复用器和/或光解复用器包括多个滤光器，每个滤光器透射预定波长并反射其它波长，所述滤光器被布置为使得光束被透射或反射通过每个滤光器以锯齿形方式依次进行。在每个滤光器后面设置光源或光检测器，以投影或接收准直光束。将光束施加到滤光器时的入射角小。并且，提供另一个光学装置以将本光学多路复用器和/或解复用器与外部光纤连接。每个滤光器的透射波长与其他滤光片不同。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式