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1. 发明授权

US5257253A Laser vision disc with digital sound (LDD) disc player for reproducing analog audio signals mixed with digital audio signals 失效
标题翻译：具有数字声音（LDD）光盘播放器的激光视盘，用于再现与数字音频信号混合的模拟音频信号
公开(公告)号：US5257253A
公开(公告)日：1993-10-26
申请号：US994077
申请日：1992-12-17
申请人： Hiroshi Otsubo , Seiji Ohmori , Tasuku Tsuruga , Eisaku Kawano , Takeshi Mawatari , Tetsuo Shimizu
发明人： Hiroshi Otsubo , Seiji Ohmori , Tasuku Tsuruga , Eisaku Kawano , Takeshi Mawatari , Tetsuo Shimizu
IPC分类号： G11B19/12 , H04S1/00 , G11B7/00
CPC分类号： H04S1/00 , G11B19/12
摘要： A first reproduction circuit reproduces a digital stereo audio signal from a signal which is read by means of a pickup from a disc loaded at a playback position, and a second reproduction circuit reproduces an analog audio signal from the signal read by the pickup. When the disc loaded at the playback position is identified as being a Laser vision Disc with Digital sound (LDD) disc, the stereo audio signal outputted from the first reproduction circuit is mixed with the analog audio signal outputted from the second reproduction circuit, such that a vocal portion of a reproduction can be reproduced together with an accompaniment portion of the reproduction, in a stereo mode.
摘要翻译：第一再现电路根据从重放位置装入的盘的拾取器读取的信号再现数字立体声音频信号，第二再现电路根据由拾取器读取的信号再现模拟音频信号。当在播放位置加载的光盘被识别为具有数字声音（LDD）光盘的激光视盘时，从第一再现电路输出的立体声音频信号与从第二再现电路输出的模拟音频信号混合，使得可以以立体声模式再现与再现的伴奏部分一起再现的声音部分。

2. 发明授权

US5177728A Disc player for playing different types of discs which automatically identifies the type of a currently loaded disc 失效
标题翻译：用于播放不同类型的磁盘的DISC播放器，其自动识别当前装载的盘的类型
公开(公告)号：US5177728A
公开(公告)日：1993-01-05
申请号：US481260
申请日：1990-02-20
申请人： Hiroshi Otsubo , Seiji Ohmori , Tasuku Tsuruga , Eisaku Kawano , Takeshi Mawatari
发明人： Hiroshi Otsubo , Seiji Ohmori , Tasuku Tsuruga , Eisaku Kawano , Takeshi Mawatari
IPC分类号： G11B20/00 , G11B19/12 , G11B27/10 , G11B27/36
CPC分类号： G11B19/12 , G11B27/105 , G11B27/36 , G11B2220/20 , G11B2220/2545 , G11B2220/2583
摘要： A disc player capable of playing discs of different types such as: discs where only a digital audio signal is contained in a first frequency band; discs where only an analog audio signal is contained in a frequency band other than the first frequency band; and, discs where digital and audio signals are contained in the first frequency band and the other frequency band. Processing arrangements are further included to determine (according to disc size and/or presence of a table of contents) whether a currently loaded disc is recorded in the same format as a previous disc which was loaded immediately prior thereto, and if the same, playing the currently loaded disc according to the same reproduction settings as those for the previous disc.

3. 发明授权

US5033036A Reproducing apparatus including means for gradually varying a mixing ratio of first and second channel signal in accordance with a voice signal 失效
标题翻译：再现装置包括根据语音信号逐渐改变第一和第二声道信号的混合比的装置
公开(公告)号：US5033036A
公开(公告)日：1991-07-16
申请号：US469653
申请日：1990-01-23
申请人： Seiji Ohmori , Eisaku Kawano , Tasuku Tsuruga , Takeshi Mawatari , Hiroshi Ohtsubo
发明人： Seiji Ohmori , Eisaku Kawano , Tasuku Tsuruga , Takeshi Mawatari , Hiroshi Ohtsubo
IPC分类号： G11B20/02 , G09B15/00 , G09B19/00 , G10K15/04
CPC分类号： G09B19/00 , G09B15/00
摘要： A reproducing apparatus mixes the voice information from a microphone and the information reproduced from a recording medium in which a vocal signal plus an instrumental signal is contained as a first signal in a first channel and only an instrumental signal is contained as a second signal in a second channel. A first mixing circuit mixes the first signal and the second signal. The output of the first mixing circuit is mixed by a second mixing circuit with the voice information from the microphone. A control circuit or audio detecting circuit provides a control signal in accordance with the level of the voice information from the microphone. The control signal controls a selection control circuit to gradually and smoothly vary the mixing ratio of the first signal and the second signal when mixing these two signals.
摘要翻译：再现装置将来自麦克风的语音信息和从其中包含声音信号加上乐器信号的记录介质再现的信息混合在第一声道中作为第一信号，并且仅将仪器信号作为第二信号包含在第二频道第一混合电路混合第一信号和第二信号。第一混合电路的输出由第二混频电路与麦克风的语音信息混合。控制电路或音频检测电路根据麦克风的语音信息的电平提供控制信号。控制信号控制选择控制电路，以便在混合这两个信号时逐渐平稳地改变第一信号和第二信号的混合比。

4. 发明授权

US06650827B1 Information reproducing apparatus 失效
标题翻译：信息重放装置
公开(公告)号：US06650827B1
公开(公告)日：2003-11-18
申请号：US09396197
申请日：1999-09-15
申请人： Takahiko Ogikubo , Takeshi Mawatari , Masato Hiratsuka , Fumitsugu Ohtake , Hirohide Kobori
发明人： Takahiko Ogikubo , Takeshi Mawatari , Masato Hiratsuka , Fumitsugu Ohtake , Hirohide Kobori
IPC分类号： H04N591
CPC分类号： H04N5/85 , G01C21/26 , G11B27/105 , G11B27/329 , G11B2220/2562 , H04N9/8042
摘要： An apparatus for reproducing information units recorded on a recording medium in a hierarchical structure having a plurality of levels. In the hierarchical structure, the information units are divided into a plurality of groups, and the groups are respectively assigned to the levels. The apparatus includes: an input device that receives an input instruction to designate one of the information units; a number determination device that determines the number of the information units included in each group; a level determination device that determines, on the basis of a determination of the number determination device, one of the levels to be searched in order to identify the designated information unit; and a reproduction device that identifies the designated information unit by searching the level determined by the level designation device, and reproduces the identified information unit.
摘要翻译：一种用于以具有多个等级的层次结构再现记录在记录介质上的信息单元的装置。在层次结构中，信息单元被分成多个组，并且这些组分别被分配给各个级别。该装置包括：输入装置，其接收指定信息单元之一的输入指令; 确定每个组中包括的信息单元的数量的数字确定装置; 电平确定装置，其基于所述数量确定装置的确定确定要搜索的一个级别，以便识别所指定的信息单元; 以及通过搜索由电平指定装置确定的电平来识别指定信息单元并再现所识别的信息单元的再现装置。

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