公开(公告)号：US6025946A

公开(公告)日：2000-02-15

申请号：US920426

申请日：1997-08-29

申请人： Shinji Miyamori ,  Yasuyuki Chaki

发明人： Shinji Miyamori ,  Yasuyuki Chaki

IPC分类号： H04L25/49 ,  H04L27/18 ,  H04B10/00

CPC分类号： H04L27/18 ,  H04L25/4904

摘要： The present invention relates to a transmission device and a transmission method which can efficiently perform transmission of audio signals with infrared ray and suppress the complication of data processing in modulation and demodulation processes to the minimum level. Audio signals reproduced by a digital audio instrument are transmitted to and recorded into a digital audio recorder through an audio signal transmission device by infrared ray. In the digital audio recorder, the recorded audio signals are immediately reproduced, transmitted and output to a digital audio instrument through an audio transmission device with infrared ray. In the transmitters, a transmission channel clock having the frequency of 5/4-times the data clock thereof from the audio signals, and modulated signals obtained by modulating the audio signals are output at the timing of the transmission channel clock.

摘要翻译： 本发明涉及一种可以有效地利用红外线进行音频信号的传输并将调制解调处理中的数据处理的复杂度抑制到最小水平的发送装置和发送方法。 由数字音乐乐器再现的音频信号通过红外线通过音频信号传输装置发送到数字音频记录器并记录到数字音频记录器中。 在数字音频记录器中，记录的音频信号通过具有红外线的音频传输装置立即被再现，传输和输出到数字音频装置。 在发射机中，具有频率为+ E，fra 5/4 + EE的传输信道时钟，来自音频信号的数据时钟，并且通过调制音频信号获得的调制信号在传输信道的定时被输出 时钟。

公开(公告)号：US5602669A

公开(公告)日：1997-02-11

申请号：US494883

申请日：1995-06-26

申请人： Yasuyuki Chaki

发明人： Yasuyuki Chaki

IPC分类号： H04B10/114 ,  H04L27/18 ,  H04B10/04

CPC分类号： H04B10/114 ,  H04L1/0003 ,  H04L1/0017 ,  H04L27/18 ,  H04L2001/0098 ,  Y02B60/31

摘要： A digital signal transmitting apparatus, a digital signal transmitting method, and a digital signal transmitter-receiver, for transmitting a digital signal within a specified frequency band by using an infrared transmission method. An infrared signal within a specified frequency band can be obtained by using a QPSK modulation circuit 13 having roll-off filters 132 and 133 and applying roll-off filtering and QPSK modulation to an inputted digital audio signal, and thereby generating a digital modulated signal S2 whose bandwidth is narrowed and driving an infrared emitter based on the modulated digital audio signal S2.

摘要翻译： 一种数字信号发送装置，数字信号发送方法和数字信号发送接收机，用于通过使用红外线传输方法发送指定频带内的数字信号。 可以通过使用具有滚降滤波器132和133的QPSK调制电路13并对输入的数字音频信号应用滚降滤波和QPSK调制，从而产生数字调制信号S2 其带宽变窄并且基于调制数字音频信号S2驱动红外发射器。

公开(公告)号：US5646966A

公开(公告)日：1997-07-08

申请号：US84860

申请日：1993-06-29

申请人： Yasuyuki Chaki ,  Hiroyuki Ino

发明人： Yasuyuki Chaki ,  Hiroyuki Ino

IPC分类号： G11B20/10 ,  G11B20/14 ,  G11B20/22 ,  G11B27/30 ,  H04L7/00

CPC分类号： G11B27/3027 ,  G11B20/14 ,  G11B20/225

摘要： A synchronization signal detector for detecting synchronization signals or frame synchronization signals recorded on a recording medium includes a binary-valued signal detector for translating RF signals into binary-valued signals, an edge detection circuit for extracting edge portions of the binary-valued signals, a counter for counting the number of clocks generated by an external source between the edge portions, a number of latch circuits for holding successive clock count values between the edge portions and for successively shifting the clock values held by them, value coincidence circuits for comparing the numbers of clocks between transitions of the synchronization patterns and the clock count values held by the counter and the latch circuits and for outputting a signal indicating a coincidence in case of complete coincidence between the numbers of clocks and the clock count values and an AND circuit for taking a logical sum of the outputs of the value coincidence circuits and the edge detector for producing a detection output of the synchronization signal. The synchronization signal may be detected efficiently with a short delay time and by a simple circuit construction even if the synchronization signal pattern is of a longer length. A demodulator utilizing the synchronization signal detector is also disclosed.

摘要翻译： 用于检测记录在记录介质上的同步信号或帧同步信号的同步信号检测器包括用于将RF信号转换成二值信号的二进制值信号检测器，用于提取二进制值信号的边缘部分的边缘检测电路， 用于对边缘部分之间的外部源产生的时钟数进行计数的计数器，用于在边缘部分之间保持连续时钟计数值并且用于连续移位它们保持的时钟值的多个锁存电路，用于比较数字的值一致电路 在同步模式的转换之间的时钟和由计数器和锁存电路保持的时钟计数值之间的时钟，并且用于在时钟数和时钟计数值之间完全一致的情况下输出指示一致的信号，以及用于采取的AND电路 值符合电路的输出的逻辑和 边缘检测器，用于产生同步信号的检测输出。 即使同步信号图案具有较长的长度，也可以以短的延迟时间和简单的电路结构有效地检测同步信号。 还公开了利用同步信号检测器的解调器。

公开(公告)号：US5400023A

公开(公告)日：1995-03-21

申请号：US29133

申请日：1993-03-10

申请人： Hiroyuki Ino ,  Yoshihide Shimpuku ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

发明人： Hiroyuki Ino ,  Yoshihide Shimpuku ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

IPC分类号： G11B20/14 ,  H03M5/14 ,  H03M7/46

CPC分类号： H03M5/145 ,  G11B20/1426

摘要： A modulating method and apparatus and a demodulating method and apparatus in which a variable length code (d, k;m, n;r) which can provide a greater minimum reversal distance to allow recording of a higher density than ever is provided. According to the modulating method and apparatus, digital data of a basic data length of m bits is modulated into a variable length code (d, k;m, n;r) of a basic code length of n bits, and where the distance between adjacent ones of the digital data is represented by T, the minimum reversal distance of the variable length code is equal to or greater than 2.0 T and the minimum length of a run of a same symbol is equal to or greater than 4. The demodulating apparatus demodulates the digital data back into the variable length code and comprises storage means for storing therein a plurality of tables for converting the digital data into the variable length code, discriminating means for discriminating the binding length of the digital data, and selecting means for selecting one of the tables in accordance with a result of discrimination of the discriminating means.

摘要翻译： 提供了可以提供更大的最小反转距离以允许记录比以往更高密度的可变长度码（d，k; m，n; r）的调制方法和装置以及解调方法和装置。 根据调制方法和装置，m比特的基本数据长度的数字数据被调制成n比特的基本码长度的可变长度码（d，k; m，n; r），并且其中 数字数据中的相邻数字由T表示，可变长度码的最小反转距离等于或大于2.0T，同一符号的行程的最小长度等于或大于4.解调装置 将数字数据解调回可变长度码，并且包括用于在其中存储用于将数字数据转换成可变长度码的多个表的存储装置，用于鉴别数字数据的绑定长度的鉴别装置，以及用于选择一个 根据识别装置的辨别结果。

公开(公告)号：US05999570A

公开(公告)日：1999-12-07

申请号：US752164

申请日：1996-11-18

申请人： Yasuyuki Chaki

发明人： Yasuyuki Chaki

IPC分类号： H04L1/00 ,  H04L27/20 ,  H04B10/00 ,  H04L21/18

CPC分类号： H04L1/0041 ,  H04L1/0057 ,  H04L1/006 ,  H04L27/2071 ,  H04L1/0071 ,  H04L7/0337

摘要： The transmitter QPSK-modulates the audio data, generates a transmission channel clock having a frequency 5/4 times the data clock based on the audio data, and outputs the modulated signal resulted from QPSK-modulation at the timing of the transmission channel clock. The infrared emitter emits infrared-rays based on the modulated signal. Digital data is thus efficiently transmitted by way of infrared-rays with suppressed complexity of data processing for modulation and demodulation.

摘要翻译： 发射机对音频数据进行QPSK调制，根据音频数据生成具有数据时钟频率5/4倍的传输通道时钟，并在传输通道时钟的定时输出由QPSK调制产生的调制信号。 红外发射器基于调制信号发射红外线。 因此，通过红外线有效地发送数字数据，抑制了用于调制和解调的数据处理的复杂性。

公开(公告)号：US5432799A

公开(公告)日：1995-07-11

申请号：US64764

申请日：1993-05-19

申请人： Yoshihide Shimpuku ,  Hiroyuki Ino ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

发明人： Yoshihide Shimpuku ,  Hiroyuki Ino ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B20/14 ,  H03M7/46 ,  H03M13/00

CPC分类号： G11B20/1426

摘要： A method of modulating digital data to a variable-length code having parameters d, k, m, n, and r for recording information on and reproducing the same from an optical disc. The optimal range of a minimum run length d corresponding to the minimum number of successive same symbols is determined by a procedure which includes a first step to determine the minimum S/N required for obtaining a desired error rate from the relationship between a bit error rate and the S/N when d=0; a second step to obtain the relationship between a change of the numerical value d and that of the S/N by calculating, on the basis of the required minimum S/N obtained at the first step, the S/N loss caused due to the change of the numerical value d; and a third step to determine, from the relationship between the numerical value d and the S/N, the range of the value d corresponding to the S/N of the transmission characteristic dependent on an optical system and an optical disc.

摘要翻译： 将数字数据调制为具有参数d，k，m，n和r的可变长度代码的方法，用于从光盘记录信息并从光盘再现信息。 对应于连续相同符号的最小数量的最小游程长度d的最佳范围由包括第一步骤的步骤来确定，该步骤确定从误码率之间的关系中获得期望误码率所需的最小S / N 当d = 0时S / N; 通过基于在第一步骤中获得的所需最小S / N计算由于第一步骤所产生的S / N损失而获得数值d与S / N的变化之间的关系的第二步骤 数值变化d; 以及第三步骤，根据数值d和S / N之间的关系，确定与取决于光学系统和光盘的传输特性的S / N相对应的值d的范围。

公开(公告)号：US5355133A

公开(公告)日：1994-10-11

申请号：US15477

申请日：1993-02-09

申请人： Yoshihide Shimpuku ,  Hiroyuki Ino ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

发明人： Yoshihide Shimpuku ,  Hiroyuki Ino ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

IPC分类号： G11B20/14 ,  H03M5/14 ,  H03M7/40 ,  H03M5/18

CPC分类号： G11B20/1426 ,  H03M5/145

摘要： A modulating method and apparatus and a demodulating method and apparatus wherein high density recording can be achieved and a dc component can be controlled with a variable length channel code are disclosed. Recording data are divided into a predetermined plurality of blocks, and those of the recording data at a portion other than a boundary portion of each of the blocks are coded referring to a table of a first ROM so that data of m bits may be converted into a code of n bits. The remaining data at the boundary portion of each block are converted into a code referring to another table of second ROM so that data of m bits may be converted into a code of n bits. Further, a code of n bits for minimizing a dc component is produced referring to a third table of a further ROM and is added to the code generated by the first and second ROMs.

摘要翻译： 公开了可以实现高密度记录并且可以用可变长度信道码来控制直流分量的调制方法和装置以及解调方法和装置。 记录数据被划分为预定的多个块，并且在每个块的边界部分之外的部分处的记录数据的那些被编码，参考第一ROM的表，使得m位的数据可以被转换成 n位的代码。 每个块的边界部分的剩余数据被转换成参考第二ROM的另一个表的代码，使得m位的数据可以被转换成n位的代码。 此外，参考另一ROM的第三表产生用于最小化直流分量的n位的代码，并将其添加到由第一和第二ROM产生的代码中。

公开(公告)号：US06967665B2

公开(公告)日：2005-11-22

申请号：US10447628

申请日：2003-05-28

申请人： Tadayuki Ishikawa ,  Kazunori Yasuda ,  Yasuyuki Chaki

发明人： Tadayuki Ishikawa ,  Kazunori Yasuda ,  Yasuyuki Chaki

IPC分类号： G06T3/00 ,  G06T5/50 ,  G09G5/00 ,  G09G5/02 ,  G09G5/377 ,  H04N5/265 ,  H04N7/50 ,  G06T11/00

CPC分类号： H04N19/61 ,  G09G5/026

摘要： A picture outputting apparatus for producing a display picture by synthesis and outputting the synthesized picture to a display unit. The picture outputting apparatus includes a decoding unit 13 for decoding input encoded moving picture data, a data processing unit 18 for generating the first display area information for displaying a first display picture represented by the decoded moving picture data to an optional size in a specified location on the display unit, generating a second display picture of a picture format suited to the display unit based on the picture data contained in the input data, generating the second display area information for displaying the second display picture to an optional size in a specified location on the display unit, generating synthesizing parameters, determining the state of synthesis, in synthesizing a display picture, based on the first display area information and the second display area information, for adding the synthesizing parameter to the second display picture, and a synthesizing outputting unit for synthesizing the first and second display pictures, based on the synthesizing parameters, to output a display picture resulting from the synthesis to the display unit.

摘要翻译： 一种图像输出装置，用于通过合成并将合成图像输出到显示单元来产生显示图像。 图像输出装置包括用于解码输入的编码的运动图像数据的解码单元13，用于产生第一显示区域信息的数据处理单元18，用于将由解码的运动图像数据表示的第一显示图像显示为指定位置的可选尺寸 在所述显示单元上，基于包含在所述输入数据中的图像数据，生成适合于所述显示单元的图像格式的第二显示图像，生成用于将所述第二显示图像显示为在指定位置中的可选尺寸的所述第二显示区域信息 在所述显示单元上，基于所述第一显示区域信息和所述第二显示区域信息，生成合成参数，合成显示图像的状态，以将所述合成参数添加到所述第二显示图像，以及合成输出 基于合成来合成第一和第二显示图像的单元 将合成所产生的显示图像输出到显示单元。

公开(公告)号：US5745582A

公开(公告)日：1998-04-28

申请号：US614493

申请日：1996-03-13

申请人： Yoshihide Shimpuku ,  Yasuyuki Chaki ,  Norihito Mihota ,  Takatsuna Sasaki

发明人： Yoshihide Shimpuku ,  Yasuyuki Chaki ,  Norihito Mihota ,  Takatsuna Sasaki

IPC分类号： H04B10/40 ,  H03M13/27 ,  H04B10/50 ,  H04B10/556 ,  H04B10/60 ,  H04J14/00 ,  H04J14/04 ,  H04J14/06 ,  H04L1/00 ,  H04L1/08 ,  H04L27/18 ,  H04B3/00

CPC分类号： H04L1/0042 ,  H04L1/0047 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/0057

摘要： An audio signal transmitting apparatus including, an audio transmission signal generating unit for adding an error correction signal to a digital audio signal and encoding and interleaving the result to generate an audio transmission signal; a continuous signal generating unit which generates a continuous signal by repeating the digital control signal to be used for the reproduction of the digital audio transmission signal a predetermined number of times; a multiplexing unit for multiplexing the audio transmission signal and the continuous signal to generate a multiplexed signal; a modulated signal generating unit for modulating the multiplexed signal by a predetermined digital modulation method to generate a modulated signal within a predetermined frequency band; and an optical signal transmitting unit for converting the modulated signal to an optical transmission signal and transmitting the same. Also, an audio signal receiving apparatus for reproducing a digital audio signal and a digital control signal from an optical transmission signal generated by the audio signal transmitting apparatus and an audio signal transmitting and receiving system using the same.

摘要翻译： 一种音频信号发送装置，包括音频发送信号产生单元，用于将纠错信号加到数字音频信号上，并对结果进行编码和交织以产生音频传输信号; 连续信号产生单元，通过重复用于数字音频传输信号的再现数字控制信号预定次数来产生连续信号; 复用单元，用于复用音频传输信号和连续信号以产生多路复用信号; 调制信号生成单元，用于通过预定的数字调制方式调制多路复用信号，以在预定频带内生成调制信号; 以及用于将调制信号转换为光传输信号并将其发送的光信号发送单元。 另外，一种音频信号接收装置，用于从由音频信号发送装置产生的光传输信号和使用该信号的音频信号发送和接收系统再现数字音频信号和数字控制信号。

公开(公告)号：US5537422A

公开(公告)日：1996-07-16

申请号：US565620

申请日：1995-11-22

申请人： Yoshihide Shimpuku ,  Hiroyuki Ino ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

发明人： Yoshihide Shimpuku ,  Hiroyuki Ino ,  Yasuyuki Chaki ,  Toshiyuki Nakagawa

IPC分类号： G11B20/12 ,  G11B20/14 ,  G11B27/30 ,  H03M5/06 ,  H03M7/14 ,  H03M7/40 ,  H03M13/00

CPC分类号： G11B20/1403 ,  G11B20/1426 ,  G11B27/3027 ,  G11B20/1217 ,  G11B2220/2545

摘要： A synchronization detector includes a NRZI circuit for extracting edge portions of RF signals detected as binary-valued signals to form a pulse train, a counter for counting the number of channel clocks in the distance between transitions represented by the edge portions, a latch circuit operated responsive to pulses from the NRZI circuit for holding a number of previously counted channel clocks immediately preceding a current count of channel clocks, and AND gates and an OR gate for detecting synchronization signals when the combination of the channel clocks from the counter and the latch circuit is the combination of the maximum distance between transitions Tmax and Tmax-kT (k=1 or 2) of a (d, k; m, n; r) modulation code. Synchronization signals may be detected promptly even if the frame structure is increased in size to enable restoration of synchronization to be expedited when frame structure synchronization is not in order. A demodulator utilizing the synchronization signal detector is also disclosed.

摘要翻译： 同步检测器包括：NRZI电路，用于提取被检测为二进制值信号的RF信号的边缘部分以形成脉冲序列;计数器，用于计数由边缘部分表示的跃迁之间的距离的信道时钟数;锁存电路， 响应于来自NRZI电路的脉冲，用于保持紧邻当前通道时钟计数之前的多个先前计数的通道时钟;以及与门和用于检测同步信号的或门，当来自计数器和锁存电路的通道时钟的组合 是（d，k; m，n; r）调制码的转换Tmax和Tmax-kT（k = 1或2）之间的最大距离的组合。 即使框架结构的大小增加，也可以及时检测同步信号，以便在帧结构同步不顺序时能够恢复同步。 还公开了利用同步信号检测器的解调器。