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1. 发明授权

US5493452A Lens retaining barrel 失效
标题翻译：镜头挡圈
公开(公告)号：US5493452A
公开(公告)日：1996-02-20
申请号：US189292
申请日：1994-01-31
申请人： Yoshiharu Hoshino , Yoshio Aoki
发明人： Yoshiharu Hoshino , Yoshio Aoki
IPC分类号： G02B7/02
CPC分类号： G02B7/025
摘要： A lens retaining barrel includes a cylindrical part for radially positioning a lens and an abutment for positioning the lens in the direction of the optical axis of the lens. The cylindrical part has a multiplicity of protrusions uniformly and circumferentially spaced around the interior thereof such that a circle inscribed within the protrusions has the same diameter as the outer diameter of the lens and has its center coincident with the optical axis of the lens. The abutment extends radially inwardly a greater extent than the protrusions and has a multiplicity of seats uniformly and circumferentially spaced around the abutment for receiving the lens. The seats have tops defining an envelope extending in a direction orthogonal to the optical axis of the lens. The lens is retained in position by each protrusion of the cylindrical part and each top of the seats and is adhered to the lens retaining barrel by an adhesive. By virtue of this construction, the lens retaining barrel is free from any eccentricity or tilt of the lens, has a higher mounting accuracy, and is easy to assemble for mounting.
摘要翻译：透镜保持筒包括用于径向定位透镜的圆柱形部分和用于将透镜定位在透镜的光轴方向上的支座。圆柱形部分具有多个突起，其均匀且围绕其内部周向间隔开，使得内接在突起内的圆与透镜的外径具有相同的直径，并且其中心与透镜的光轴重合。邻接部比径向向内延伸更大的程度，并且具有多个座位，并且围绕邻接件周向间隔开以容纳透镜。座椅具有限定在与透镜的光轴正交的方向上延伸的包络的顶部。透镜由圆柱形部分的每个突起和座的每个顶部保持在适当位置，并通过粘合剂粘附到镜片保持筒上。凭借这种结构，透镜保持筒没有透镜的任何偏心或倾斜，具有更高的安装精度，并且易于组装用于安装。

2. 发明授权

US5228059A Differential code transmission system 失效
标题翻译：差分码传输系统
公开(公告)号：US5228059A
公开(公告)日：1993-07-13
申请号：US832587
申请日：1992-02-07
申请人： Toshiyuki Takegahara , Satoru Koizumi , Yoshiharu Hoshino , Hideki Suganami , Kozo Kameda , Takeshi Kimura , Yoshimichi Otsuka
发明人： Toshiyuki Takegahara , Satoru Koizumi , Yoshiharu Hoshino , Hideki Suganami , Kozo Kameda , Takeshi Kimura , Yoshimichi Otsuka
IPC分类号： H03M3/04 , H04L25/34
CPC分类号： H03M7/3044 , H04B14/066
摘要： As to a differential code (DPCM) transmission system for an input signal as such as an audio signal, in case higher frequency components thereof are dominant, every another samples of the input signal are alternately into two groups, in each of which differential coding effected, so as to maintain a dynamic range in higher frequency range; in case no frequency components exceeding one fourth of the sampling frequency are contained in the input signal, successive 3 MSB's having a pattern "1, 0, 1" or "0, 1, 0" are corrected into "1, 1, 1" or "0, 0, 0" respectively; and in case 2 symbols of a tertiary code converted from 3 bits of a binary code are transmitted and restored, peripheral bit arrangement of a matrix having rows consisting of the first symbols of the converted tertiary codes and columns consisting of the second symbols thereof are allotted such as Gray codes are obtained, while an inner 2.times.2 matrix of a 4.times.4 matrix formed by inserting a new threshold level between two threshold levels provided for detecting the tertiary code is allotted with bits relating to bits arranged at adjacent positions, so as to reduce the bit error rate of the restored binary code.
摘要翻译：对于用于诸如音频信号的输入信号的差分码（DPCM）传输系统，如果其较高频率分量占优势，则输入信号的每隔一个样本交替地分成两组，每一个采样差分编码，以保持较高频率范围内的动态范围; 在输入信号中不包含超过采样频率四分之一的频率分量的情况下，具有模式“1,0”或“0,1,0”的连续3个MSB被校正为“1,1,1” 或“0,0,0” 并且在发送和恢复从二进制码的3位转换的三级代码的2个符号的情况下，分配具有由转换的第三代码的第一符号组成的行的矩阵的周边比特排列以及由其第二个符号组成的列例如格雷码，而通过在提供用于检测第三代码的两个阈值电平之间插入新的阈值电平形成的4×4矩阵的内部2×2矩阵被分配有与布置在相邻位置的位有关的位，以便减少恢复的二进制码的误码率。

3. 发明授权

US5072297A Method and system for transmitting and receiving PCM audio signals in combination with a video signal 失效
标题翻译：与视频信号结合发送和接收PCM音频信号的方法和系统
公开(公告)号：US5072297A
公开(公告)日：1991-12-10
申请号：US499874
申请日：1990-03-27
申请人： Masaru Kanazawa , Taiichiro Kurita , Kazuhiko Shibuya , Taiji Nishizawa , Yutaka Tanaka , Minoru Honda , Kazumasa Enami , Haruo Okuda , Hideki Suganami , Yoshiharu Hoshino , Toshiyuki Takegahara , Kaoru Watanabe
发明人： Masaru Kanazawa , Taiichiro Kurita , Kazuhiko Shibuya , Taiji Nishizawa , Yutaka Tanaka , Minoru Honda , Kazumasa Enami , Haruo Okuda , Hideki Suganami , Yoshiharu Hoshino , Toshiyuki Takegahara , Kaoru Watanabe
IPC分类号： H04N7/04 , H04N7/088
CPC分类号： H04N7/04 , H04N7/088
摘要： A method and system for multiplexing additional audio information in the form of pulse code modulation (PCM) audio signals onto a television signal. The PCM audio signal is time multiplexed into scanning retrace intervals of the video signal. At a receiver, the bit error rate of the decoded PCM audio signal is compared with a threshold so as to switch the audio output from the PCM audio signal to a conventional FM demodulated audio signal when the bit error rate exceeds the predetermined threshold. In this way, the benefits of both PCM audio and FM audio can be obtained by utilizing the higher immunity of FM signals in low signal-to-noise ratio environments, while the high fidelity PCM audio signal is utilized when the signal-to-noise ratio environment is relatively high.
摘要翻译：一种用于将以脉冲编码调制（PCM）音频信号的形式的附加音频信息复用到电视信号上的方法和系统。 PCM音频信号被时分复用成视频信号的扫描回扫间隔。在接收机处，将解码的PCM音频信号的误码率与阈值进行比较，以便当误码率超过预定阈值时，将音频输出从PCM音频信号切换到常规的FM解调音频信号。以这种方式，通过在低信噪比环境中利用FM信号的更高的抗扰度，可以获得PCM音频和FM音频两者的优点，而当使用高保真PCM音频信号时，信噪比比例环境比较高。

4. 发明授权

US5127022A Differential coding system 失效
标题翻译：差分编码系统
公开(公告)号：US5127022A
公开(公告)日：1992-06-30
申请号：US439815
申请日：1989-11-21
申请人： Toshiyuki Takegahara , Satoru Koizumi , Yoshiharu Hoshino , Hideki Suganami , Kozo Kameda , Takeshi Kimura , Yoshimichi Otsuka
发明人： Toshiyuki Takegahara , Satoru Koizumi , Yoshiharu Hoshino , Hideki Suganami , Kozo Kameda , Takeshi Kimura , Yoshimichi Otsuka
IPC分类号： H03M3/04
CPC分类号： H03M7/3044
摘要： A differential code (DPCM) transmission system for an audio signal, in case higher frequency components thereof are dominant, every another samples of the input signal are alternately into two groups, in each of which differential coding effected, so as to maintain a dynamic range in higher frequency range; when a near instantaneously compressed DPCM signal is transmitted, coding errors caused by the compression are corrected by varying the difference between samples in response to the comparison between a locally decoded signal and the original signal; when the frequency components exceeding one fourth of the sampling frequency are contained in the input signal, successive 3 MSB's having a pattern "1, 0, 1" or "0, 1, 0" are corrected into "1, 1, 1" or "0, 0, 0" respectively; and in case 2 symbols of a tertiary code converted from 3 bits of a binary code are transmitted and restored, peripheral bit arrangement of a matrix having rows consisting of the first symbols of the converted tertiary codes and columns consisting of the second symbols thereof are allotted such as Gray codes are obtained, while an inner 2.times.2 matrix of a 4.times. 4 matrix formed by inserting a new threshold level between two threshold levels provided for detecting the tertiary code is allocated with bits relating to bits arranged at adjacent positions, so as to reduce the bit error rate of the restored binary code.
摘要翻译：用于音频信号的差分码（DPCM）传输系统，在其较高频率分量占优势的情况下，输入信号的每隔一个样本交替地分成两组，每个采样进行差分编码，以保持动态范围在较高的频率范围内; 当发送近瞬时压缩的DPCM信号时，通过响应于本地解码信号与原始信号之间的比较改变样本之间的差异来校正由压缩引起的编码错误; 当超过采样频率四分之一的频率分量包含在输入信号中时，将具有模式“1,0,1”或“0,1,0”的连续3个MSB被校正为“1,1,1”或 “0,0,0” 并且在发送和恢复从二进制码的3位转换的三级代码的2个符号的情况下，分配具有由转换的第三代码的第一符号组成的行的矩阵的周边比特排列以及由其第二个符号组成的列获得格雷码，而通过在提供用于检测第三代码的两个阈值电平之间插入新的阈值电平而形成的4×4矩阵的内部2×2矩阵被分配与位于相邻位置的位有关的位，以便减少恢复的二进制码的误码率。

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