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    Video signal scramble system
    1.
    发明授权
    Video signal scramble system 失效
    视频信号加扰系统

    公开(公告)号：US4901351A

    公开(公告)日：1990-02-13

    申请号：US241314

    申请日：1988-09-07

    申请人： Masatoshi Tanaka ,  Wataru Kuroiwa ,  Akinori Masuko ,  Jyoji Maeda ,  Shouji Uehara ,  Tsutomu Uekusa

    发明人： Masatoshi Tanaka ,  Wataru Kuroiwa ,  Akinori Masuko ,  Jyoji Maeda ,  Shouji Uehara ,  Tsutomu Uekusa

    IPC分类号： H04N7/171

    CPC分类号： H04N7/1713

    摘要： A transmitter encoder has a gain selector for compressing the level of a horizontal sync signal component of a video intermediate frequency (IF) signal to scramble it, and an AM modulation degree controller for superposing a control signal, which indicates the timing for the level compression, on an FM audio IF signal in the form of AM modulation. The transmitter encoder further has an oscillator circuit for generating a sine wave with a horizontal frequency (fH) and an nfH sine wave having a frequency n times the horizontal frequency, and a mixer for mixing these sine waves to thereby provide the above control signal. A receiver decoder has an AM detector for detecting an AM component of the FM audio IF signal from the transmitter encoder to reproduce a composite signal and band filters for respectively extracting the fH and nfH sine waves from the reproduced composite signal. The receiver decoder further has a gain selector for expanding the compressed level of the horizontal sync signal component of the video IF signal from the transmitter encoder, by means of a sync expansion pulse generated on the basis of the fH sine wave.

    摘要翻译： 发射机编码器具有用于压缩视频中频（IF）信号的水平同步信号分量的电平以对其进行加扰的增益选择器，以及用于叠加控制信号的AM调制度控制器，其指示电平压缩的定时 ，以AM调制形式的FM音频IF信号。 发射机编码器还具有振荡器电路，用于产生具有水平频率（fH）和频率n倍于水平频率的nfH正弦波的正弦波和用于混合这些正弦波的混频器，从而提供上述控制信号。 接收机解码器具有AM检测器，用于检测来自发射机编码器的FM音频IF信号的AM分量，以再现复合信号，以及频带滤波器，用于分别从再现的复合信号中提取fH和nfH正弦波。 接收机解码器还具有增益选择器，用于借助于基于fH正弦波产生的同步扩展脉冲来扩展来自发射机编码器的视频IF信号的水平同步信号分量的压缩电平。

    Frequency synthesizer for CATV tuner
    3.
    发明授权
    Frequency synthesizer for CATV tuner 失效
    用于CATV调谐器的频率合成器

    公开(公告)号：US4613826A

    公开(公告)日：1986-09-23

    申请号：US729986

    申请日：1985-05-03

    申请人： Akinori Masuko ,  Wataru Kuroiwa ,  Yasufumi Shimizu ,  Hideki Hirosawa

    发明人： Akinori Masuko ,  Wataru Kuroiwa ,  Yasufumi Shimizu ,  Hideki Hirosawa

    IPC分类号： H03J5/02 ,  H03L7/06 ,  H04K1/02

    CPC分类号： H03J5/0281

    摘要： A variable frequency oscillator includes a RAM which stores a frequency setting data and provides a frequency control data, a VCO circuit which provides an oscillation output having a frequency which is defined by the contents of the frequency control data, a reference oscillator which provides a reference signal having a given frequency and phase, a phase comparator which detects the phase difference between the reference signal and a comparison signal corresponding to the oscillation output, and a logic circuit which combines the frequency control data with a phase data and provides the frequency setting data. The phase comparator provides the phase data whose contents indicate +1 if the phase of the comparison signal is delayed from the phase of the reference signal, indicate -1 if the phase of the comparison signal is advanced to the phase of the reference signal, and indicate 0 if the phase of the comparison signal matches with the phase of the reference signal.

    摘要翻译： 变频振荡器包括存储频率设置数据并提供频率控制数据的RAM，提供具有由频率控制数据的内容定义的频率的振荡输出的VCO电路，提供参考的参考振荡器 具有给定频率和相位的信号;相位比较器，其检测参考信号和对应于振荡输出的比较信号之间的相位差;以及逻辑电路，其将频率控制数据与相位数据组合，并提供频率设置数据 。 相位比较器提供相位数据，如果比较信号的相位比参考信号的相位延迟，其内容指示为+1，如果比较信号的相位提前到参考信号的相位，则表示-1，以及 如果比较信号的相位与参考信号的相位匹配，则指示0。

    Digital broadcasting receiving apparatus
    4.
    发明申请
    Digital broadcasting receiving apparatus 审中-公开
    数字广播接收装置

    公开(公告)号：US20060126839A1

    公开(公告)日：2006-06-15

    申请号：US11266391

    申请日：2005-11-04

    申请人： Masakazu Koike ,  Shinichi Ooi ,  Osamu Yoshida ,  Wataru Kuroiwa

    发明人： Masakazu Koike ,  Shinichi Ooi ,  Osamu Yoshida ,  Wataru Kuroiwa

    IPC分类号： H04N7/167

    CPC分类号： H04N21/26606 ,  H04H60/23 ,  H04H60/27 ,  H04H60/82 ,  H04N5/4401 ,  H04N7/1675 ,  H04N21/4405 ,  H04N21/4622 ,  H04N21/4623 ,  H04N21/4627 ,  H04N21/835

    摘要： Channel selection unit selects a channel of a desired program from a digital broadcast signal in which an ECM and an EMM are multiplexed. Separation unit separates the ECM and the EMM. EMM decoder decodes the EMM. A first key is obtained from the decoded EMM. ECM decoder decodes the separated ECM using the first key. A second key is obtained from the decoded ECM. Viewing enabling determination unit determines whether or not to enable viewing of the program. A system controller communicates with an information server through a network interface part at the time of work key non-setting, and an OSD display processing unit is made to generate an image for displaying information provided.

    摘要翻译： 频道选择单元从其中复用了ECM和EMM的数字广播信号中选择所需节目的频道。 分离单元分离ECM和EMM。 EMM解码器解码EMM。 从解码的EMM获得第一个密钥。 ECM解码器使用第一个密钥解码分离的ECM。 从解码的ECM获得第二个密钥。 查看启用确定单元确定是否启用查看程序。 系统控制器在工作密钥不设置时通过网络接口部分与信息服务器进行通信，并且使OSD显示处理单元生成用于显示提供的信息的图像。

    Key distribution system
    6.
    发明申请
    Key distribution system 审中-公开
    关键配电系统

    公开(公告)号：US20090238368A1

    公开(公告)日：2009-09-24

    申请号：US10569961

    申请日：2005-01-31

    申请人： Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Shigeru Yamada ,  Tetsuya Inoue ,  Yoji Kumazaki ,  Wataru Kuroiwa ,  Shinichi Oi ,  Osamu Yoshida

    发明人： Masao Nonaka ,  Yuichi Futa ,  Motoji Ohmori ,  Shigeru Yamada ,  Tetsuya Inoue ,  Yoji Kumazaki ,  Wataru Kuroiwa ,  Shinichi Oi ,  Osamu Yoshida

    IPC分类号： H04L9/08 ,  H04L9/06

    CPC分类号： H04L9/0833 ,  H04L9/0891 ,  H04L2209/60

    摘要： The cloning source of an authorized receiving device cannot be identified. A key distribution system 1 concerning the present invention includes: a communication channel 10; a key distribution center 11; a server 12; and receiving devices 13a to 13n. The key distribution center 11 distributes, to the server 12, the information necessary for distributing shared keys SK to the receiving devices 13a to 13n, and distributes the individual information group EMMG necessary for receiving the shared keys SK from the server 12. The server 12 generates the shared keys SK, generates the common information ECM based on the shared keys SK and the system secret variable group set SPGS, and distributes the common information ECM to the receiving devices 13a to 13n. The receiving devices 13a to 13n obtain the shared keys SK based on the individual information group EMMG and the common information ECM and outputs them to outside.

    摘要翻译： 授权接收设备的克隆源无法识别。 关于本发明的密钥分发系统1包括：通信信道10; 密钥分配中心11; 服务器12; 以及接收装置13a〜13n。 密钥分配中心11向服务器12分配向接收设备13a至13n分配共享密钥SK所需的信息，并且从服务器12分发用于接收共享密钥SK所必需的个人信息组EMMG。服务器12 生成共享密钥SK，基于共享密钥SK和系统秘密变量组集SPGS生成公共信息ECM，并将公共信息ECM分配给接收装置13a〜13n。 接收设备13a至13n基于个人信息组EMMG和公共信息ECM获得共享密钥SK并将其输出到外部。

    Reproducing apparatus, reproducing system, and reproducing method
    7.
    发明申请
    Reproducing apparatus, reproducing system, and reproducing method 审中-公开
    再现装置，再现系统和再现方法

    公开(公告)号：US20060115232A1

    公开(公告)日：2006-06-01

    申请号：US11288121

    申请日：2005-11-29

    申请人： Atsushi Hirota ,  Wataru Kuroiwa

    发明人： Atsushi Hirota ,  Wataru Kuroiwa

    IPC分类号： H04N5/91

    CPC分类号： H04N5/913 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00507 ,  G11B20/00847 ,  G11B20/00855 ,  G11B20/00869 ,  H04N5/765 ,  H04N5/781 ,  H04N5/85 ,  H04N5/907 ,  H04N7/1675 ,  H04N9/8042 ,  H04N21/222 ,  H04N21/4184 ,  H04N21/4405 ,  H04N21/631

    摘要： A reproducing apparatus has a communication unit which receives distribution of contents from a server device via a network, a decoding unit, a reproducing unit, and a control unit which controls to when encrypting and distributing divided contents of the contents from plural modules owned by each of plural server units owned by the server device, distribute distribution information showing each one of the divided contents to be supplied from which one of plural module units in the plural server units, plural decoding keys depending on each module unit of each server unit, and plural divided contents individually encrypted by the plural decoding keys, from the server device via the communication unit, to decode the plural divided contents by the decoding unit on the basis of the distribution information and plural decoding keys, and to reproduce the decoded contents.

    摘要翻译： 再现装置具有经由网络从服务器装置接收内容分配的通信单元，解码单元，再现单元和控制单元，该控制单元控制从多个模块所拥有的多个模块中分配内容的加密和分发 由服务器装置拥有的多个服务器单元，分配表示要从多个服务器单元中的多个模块单元中的哪一个提供的分割内容中的每一个的分发信息，取决于每个服务器单元的每个模块单元的多个解码密钥，以及 通过多个解码密钥分别加密的多个分割内容，经由通信单元从服务器装置经由解码单元基于分发信息和多个解码密钥解码多个分割内容，并再现解码内容。

    CATV communication system and a CATV center equipment and CATV terminal units
    9.
    发明授权
    CATV communication system and a CATV center equipment and CATV terminal units 失效
    CATV通信系统和CATV中心设备和CATV终端单元

    公开(公告)号：US5822679A

    公开(公告)日：1998-10-13

    申请号：US665970

    申请日：1996-06-21

    申请人： Masakazu Koike ,  Osamu Yoshida ,  Wataru Kuroiwa

    发明人： Masakazu Koike ,  Osamu Yoshida ,  Wataru Kuroiwa

    IPC分类号： H04H1/02 ,  H04J1/00 ,  H04J4/00 ,  H04N7/16 ,  H04N7/173 ,  H04N21/2385 ,  H04N7/14

    CPC分类号： H04N7/17309

    摘要： In the CATV communication system, each channel comprises a down control channel which employs a carrier wave (fd0) and accommodates a down delay control channel slot and down assignment control channel slots therein, a plurality of down communication channels which employ carrier waves (fd1 to fd4) different from that employed in the down control channel and accommodate down communication data channel slots therein, and a plurality of up channels which employ carrier waves (fu0 to fu3) and accommodate up delay control channel slots, up assignment control channel slots, and communication data channel slots therein.

    摘要翻译： 在CATV通信系统中，每个信道包括采用载波（fd0）并且容纳下行延迟控制信道时隙和下行分配控制信道时隙的下行控制信道，多个下行通信信道采用载波（fd1至 fd4）与下行控制信道中采用的不同，并且容纳其中的通信数据信道时隙，以及使用载波（fu0至fu3）并容纳延迟控制信道时隙，上行分配控制信道时隙的多个上行信道，以及 通信数据通道槽。