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1. 发明授权

US3921209A Digital recording and reproducing system employing ' pcm 失效
标题翻译：使用PCM的数字记录和再现系统
公开(公告)号：US3921209A
公开(公告)日：1975-11-18
申请号：US26228772
申请日：1972-06-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHINO HIROKAZU , YAMAGUCHI TETSUO , TSUBOKA EIICHI , HATANO HIROSHI
IPC分类号： G11B20/10 , H03M3/04 , H04N5/926 , G11B5/02
CPC分类号： G11B20/10527 , H03M3/04 , H04N5/926 , H04N5/9262
摘要： A magnetic recording and reproducing system including apparatus for converting a signal to be recorded into a Delta PCM code, a sampled value being represented by n bits, and apparatus for applying a signal corresponding to each of the n bits in the form of a NRZ code to each of n magnetic heads arranged in parallel in the transverse direction of a magnetic tape, the n bits being recorded on at least n parallel tracks and being reproduced from the magnetic tape.

2. 发明授权

US3602888A Learning device 失效
标题翻译：学习设备
公开(公告)号：US3602888A
公开(公告)日：1971-08-31
申请号：US3602888D
申请日：1968-12-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIYAMA AKIRA , YOSHINO HIROKAZU , YOSHIDA TOMIO , YAMAGUCHI TETSUO
IPC分类号： G06F7/02 , G06F15/18
CPC分类号： G06F7/023
摘要： A learning device having a plurality of magnetic cores which serve as multistage level weight memory elements. In the device, the product of an input and a corresponding weight is delivered from the magnetic core in the form of a digital output, and the sum of digital outputs is compared with a threshold value in a decision circuit to derive an error signal so that the weight carried by each magnetic core can fully automatically be corrected until the actual output coincides with an expected output.

3. 发明授权

US3902121A Automatic tuner 失效
标题翻译：自动调谐器
公开(公告)号：US3902121A
公开(公告)日：1975-08-26
申请号：US31232672
申请日：1972-12-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHINO HIROKAZU , YAMAGUCHI TETSUO , TSUBOKA EIICHI
IPC分类号： H03J5/02 , H03J7/24 , H04B1/36
CPC分类号： H03J5/0245 , H03J7/24
摘要： An automatic tuner for television receivers in which the oscillation frequency of a first voltage controlled oscillator in a phase locked loop is brought to a predetermined frequency corresponding to given channel selection information, and the oscillation frequency of a second voltage controlled oscillator is swept until the beat frequency obtained from the first and second voltage controlled oscillators reaches a particular frequency. After the reaching of the practicular frequency, the second voltage controlled oscillator is locked to its oscillation frequency at the instant of reaching the particular frequency, and its output is used as a local oscillator signal.

4. 发明授权

US3638196A Learning machine 失效
标题翻译：学习机
公开(公告)号：US3638196A
公开(公告)日：1972-01-25
申请号：US3638196D
申请日：1970-07-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIYAMA AKIRA , YOSHINO HIROKAZU , YOSHIDA TOMIO , YAMAGUCHI TETSUO
IPC分类号： G06K9/62 , G06F7/02 , G06F15/18
CPC分类号： G06F7/023
摘要： A learning machine in which threshold values corresponding to the desired output conditions and having a dead zone therebetween are used during the learning process for the discrimination of the output from a memory storing a plurality of standard pattern information, and this discriminating faculty is utilized for the discrimination of input pattern information with respect to a single threshold value having no dead zone. Thus, the precision of discrimination can be remarkably improved due to the fact that the threshold values having a dead zone are used during the learning process, and the learning can be digitally and automatically carried out.
摘要翻译：一种在学习过程中使用对应于期望输出条件并且具有死区的阈值的学习机器，用于区分来自存储多个标准模式信息的存储器的输出，并且该鉴别教师被用于相对于没有死区的单个阈值的输入模式信息的区分。因此，由于在学习过程中使用具有死区的阈值的事实，因此可以显着提高鉴别的精度，并且可以数字和自动地进行学习。

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