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    • 2. 发明授权
    • Content usage system, content usage method, recording and playback device, content delivery method, and content delivery program
    • 内容使用系统,内容使用方法,记录和回放设备,内容传递方法和内容传送程序
    • US08249422B2
    • 2012-08-21
    • US12283706
    • 2008-09-15
    • Tatsuya NaraharaShunji YoshimuraSho Murakoshi
    • Tatsuya NaraharaShunji YoshimuraSho Murakoshi
    • H04N9/80
    • G06F17/30038G06F17/30053
    • A content usage system includes a recording and playback device and a portable electronic device mutually connected via a network. When the recording and playback device receives a certain command while outputting digital content, that content is converted into transfer content suitable for use with the portable electronic device, and then stored with metadata indicating that the content is transfer content. Using the metadata, the recording and playback device is able to generate and transmit a list of transfer content upon request from the portable electronic device. Using the list, the user of the portable electronic device then selects desired transfer content from the list and sends a transfer content request. In response, the recording and playback device transmits the selected transfer content to the portable electronic device, thereby making the content available for use on the portable electronic device.
    • 内容使用系统包括通过网络相互连接的记录和重放设备和便携式电子设备。 当记录和播放设备在输出数字内容时接收到某个命令时,该内容被转换成适合于与便携式电子设备一起使用的传送内容,然后存储有表示内容是传送内容的元数据。 使用元数据,记录和播放设备能够根据请求从便携式电子设备生成和发送传送内容的列表。 使用该列表,便携式电子设备的用户然后从列表中选择所需的传送内容并发送传送内容请求。 作为响应,记录和回放设备将所选择的传送内容发送到便携式电子设备,从而使内容可在便携式电子设备上使用。
    • 5. 发明授权
    • Method and apparatus, demodulating method and signal demodulating
apparatus
    • 方法和装置,解调方法和信号解调装置
    • US5870037A
    • 1999-02-09
    • US687969
    • 1996-07-26
    • Toru OkazakiShunji Yoshimura
    • Toru OkazakiShunji Yoshimura
    • H03M5/14H03M7/46H03M13/31
    • H03M7/46H03M13/31H03M5/14H03M5/145
    • In the present invention, a partly duplexed conversion table is used as a conversion table for converting an M-bit based data string directly into an N-bit based code string without using margin bits. This conversion table is constituted by first and second sub-tables including plural code groups, respectively. The plural code groups include different codes for the same input data. The second sub-table is a table which is partly duplexed with the first sub-table and is produced by allocating different codes to data from first input data to second input data in the first sub-table. The first and second sub-tables are so designed that code sets of the duplexed portions take variants of digital sum variations which are opposite in sign. Codes are allocated to all the code groups in the duplexed portions of the first and second sub-tables with respect to input data sequentially from a code having a maximum absolute value of variant of the digital sum variation. Thus, according to the present invention, low frequency components of modulated signals may be restricted properly.
    • 在本发明中,使用部分双工转换表作为用于将基于M位的数据串直接转换为基于N位的代码串而不使用边缘位的转换表。 该转换表分别由包括多个代码组的第一和第二子表构成。 多个代码组包括用于相同输入数据的不同代码。 第二子表是与第一子表部分双工的表,并且通过从第一子表中的第一输入数据到第二输入数据的数据分配不同的代码而产生。 第一和第二子表被设计成使得双工部分的代码集获得与符号相反的数字和变化的变体。 从具有数字和变化的变型的最大绝对值的代码顺序地,将代码相对于输入数据分配给第一和第二子表的双工部分中的所有代码组。 因此,根据本发明,可以适当地限制调制信号的低频分量。
    • 7. 发明授权
    • Optical recording medium
    • 光记录介质
    • US5380573A
    • 1995-01-10
    • US930702
    • 1992-10-06
    • Atsushi FukumotoToshiki UdagawaShunji YoshimuraMasumi OhtaMasumi OnoKouichi Yasuda
    • Atsushi FukumotoToshiki UdagawaShunji YoshimuraMasumi OhtaMasumi OnoKouichi Yasuda
    • G11B7/005G11B11/105B32B3/00
    • G11B7/005G11B11/105G11B11/10528G11B11/10584Y10S428/913Y10T428/31678
    • An optical recording medium has a multi-layer film including a reproducing layer and a recording holding layer, in which, while a readout light is radiated to the optical recording medium for transcribing signals magnetically recorded in the recording holding layer to the reproducing layer, the signals are converted by photomagnetic effects into optical signals which are read. Alternately, an optical recording medium has phase pits formed thereon in accordance with signals and changed in reflectance with temperature, in which, while a readout light beam is radiated to the optical recording medium and the reflectance is changed partially within a scanning spot the readout light beam, the phase pits are read. The track pitch p of pits RP of recording signals in a direction at right angles to the scanning direction of the laser light is set to not more than one-half the spot diameter of the laser light to raise the track density to improve the recording capacity of the recording medium.
    • PCT No.PCT / JP91 / 01436 Sec。 371日期:1992年10月6日 102(e)日期1992年10月6日PCT 1991年10月18日PCT PCT。 公开号WO92 / 15092 日期:1992年9月3日。光记录介质具有包括再现层和记录保持层的多层膜,其中,当将读出光照射到用于转录磁记录在记录保持中的信号的光记录介质 层到再现层,信号被光磁效应转换成被读取的光信号。 或者,光记录介质根据信号形成在其上的相位凹坑,并随着温度反射而变化,其中当将读出光束照射到光记录介质上并且反射率在扫描点内部分地改变时,读出光 光束,读取相位坑。 与激光的扫描方向成直角的记录信号的凹坑RP的轨道间距p被设定为不大于激光的光点直径的一半,以提高轨道密度以提高记录容量 的记录介质。