专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US06643347B2 Clock signal generation apparatus 有权
标题翻译：时钟信号发生装置
公开(公告)号：US06643347B2
公开(公告)日：2003-11-04
申请号：US10025583
申请日：2001-12-26
申请人： Takeo Ohishi
发明人： Takeo Ohishi
IPC分类号： H04L700
CPC分类号： H04N21/6336 , H03L7/095 , H03L7/146 , H03L7/181 , H04N21/4135 , H04N21/4305 , H04N21/6112
摘要： A clock signal generation apparatus includes a first device for extracting reference information from an input digital signal. A first oscillator generates a reference clock signal having a frequency depending on a control signal. A second oscillator generates a basic signal having a fixed frequency. A first circuit loop operates for generating a first error signal in response to the reference clock signal and the extracted reference information, and for feeding the first error signal in response to the reference clock signal and the control signal. A second device operates for enabling one of the first circuit loop and the second circuit loop and disabling the other.
摘要翻译：时钟信号发生装置包括用于从输入数字信号中提取参考信息的第一装置。第一振荡器产生具有取决于控制信号的频率的参考时钟信号。第二振荡器产生具有固定频率的基本信号。第一电路环路用于响应于参考时钟信号和所提取的参考信息产生第一误差信号，并且响应于参考时钟信号和控制信号馈送第一误差信号。第二设备用于启用第一电路回路和第二回路回路中的一个并禁用另一个回路。

42. 发明授权

US06487720B1 Apparatus for receiving digital broadcast signal and apparatus for recording and reproducing digital broadcast information included in the digital broadcast signal 有权
标题翻译：用于接收数字广播信号的装置和用于记录和再现包括在数字广播信号中的数字广播信息的装置
公开(公告)号：US06487720B1
公开(公告)日：2002-11-26
申请号：US09181514
申请日：1998-10-28
申请人： Takeo Ohishi
发明人： Takeo Ohishi
IPC分类号： H04N710
CPC分类号： H04H40/18 , H04H60/15 , H04H60/16 , H04H60/27 , H04N7/165
摘要： When a received broadcast signal is received in a digital broadcast signal receiving apparatus, an entitlement management message EMM representing broadcast-watching enabling information is extracted from the received digital broadcast signal in an EMM extracting unit regardless of any operation. An extracted digital broadcast signal already descrambled in a preceding step is recorded in a recording unit. When a user selects a reproducing operation in a current step, particular digital broadcast information indicating a particular television program is extracted from the extracted digital broadcast signal in a packet extracting unit. Therefore, the particular television program can be reproduced. When a user selects a receiving operation in the current step, pieces of digital broadcast information indicating television programs are extracted from the received digital broadcast signal in the packet extracting unit and are descrambled according to the message EMM, and the pieces of digital broadcast information are recorded as an extracted digital broadcast signal of the current step in the recording unit. Accordingly, because the message EMM is extracted regardless of any operation, the pieces of digital broadcast information indicating television programs can be reliably extracted from the digital broadcast signal in the receiving operation.
摘要翻译：当在数字广播信号接收装置中接收到广播信号时，无论任何操作如何，在EMM提取单元中从接收到的数字广播信号中提取表示广播观看启用信息的授权管理消息EMM。已经在先前步骤中解扰的提取的数字广播信号被记录在记录单元中。当用户在当前步骤中选择再现操作时，在分组提取单元中从提取的数字广播信号中提取指示特定电视节目的特定数字广播信息。因此，可以再现特定的电视节目。当用户在当前步骤中选择接收操作时，在分组提取单元中从接收到的数字广播信号中提取指示电视节目的数字广播信息，并根据消息EMM被解扰，并且数字广播信息是被记录为记录单元中当前步骤的提取的数字广播信号。因此，由于无论任何操作都提取消息EMM，因此在接收操作中可以从数字广播信号中可靠地提取指示电视节目的数字广播信息。

43. 发明授权

US5909257A Apparatus and method of receiving broadcasted digital signal 失效
标题翻译：接收广播数字信号的装置和方法
公开(公告)号：US5909257A
公开(公告)日：1999-06-01
申请号：US810994
申请日：1997-02-27
申请人： Takeo Ohishi , Tomoyuki Shindo , Yutaka Tanaka
发明人： Takeo Ohishi , Tomoyuki Shindo , Yutaka Tanaka
IPC分类号： H04N5/44 , H04N5/775 , H04N9/804 , H04N21/434 , H04N5/76
CPC分类号： H04N9/8042 , H04N21/4135 , H04N21/4344 , H04N21/4345 , H04N21/4382 , H04N5/4401 , H04N21/4325 , H04N21/4334 , H04N5/775
摘要： A digital TV broadcasting signal is demodulated to obtain a bit stream containing at least a first packet of a first program specific information concerning all TV programs conveyed by the digital TV broadcasting signal and first packets of the TV programs themselves. Selection data is entered for selecting at least one of the TV programs. In response to the selection data, only second packets are selected from among the first packets. The second packets contain only data of the selected TV program. The second packets are decoded. Further, the first packet and the second packets are output without decoding and accepted. The first program specific information is modified into a second program specific information concerning the selected at least one of the TV programs. The modification is executed after the first packet and the second packets are output. Or, the modification is executed before the first packet and the second packets are accepted.
摘要翻译：解调数字电视广播信号以获得包含关于由数字TV广播信号传送的所有电视节目和电视节目本身的第一分组的至少第一节目特定信息的第一分组的比特流。输入选择数据以选择至少一个电视节目。响应于选择数据，仅从第一分组中选择第二分组。第二个数据包仅包含所选电视节目的数据。第二个数据包被解码。此外，第一分组和第二分组被输出而不进行解码并被接受。第一节目特定信息被修改为关于所选择的至少一个电视节目的第二节目特定信息。在第一分组和第二分组被输出之后执行修改。或者，在第一分组和第二分组被接受之前执行修改。

44. 发明授权

US5633635A Method of processing code for error checking and code processing circuit 失效
标题翻译：处理代码错误检查和代码处理电路的方法
公开(公告)号：US5633635A
公开(公告)日：1997-05-27
申请号：US310766
申请日：1994-09-27
申请人： Takeo Ohishi , Seiji Higurashi
发明人： Takeo Ohishi , Seiji Higurashi
IPC分类号： G11B20/18 , H03M13/00 , H03M13/35 , H04L1/00
CPC分类号： H04L1/0066 , G11B20/1833 , H03M13/00 , H03M13/35 , H04L1/0041 , H04L1/0057
摘要： A method of generating codes for error checking from a first and second types of data trains, first type of data trains having m symbols, second type of data trains having n symbols, m and n being natural numbers and m
摘要翻译：一种用于从第一和第二类型的数据列生成用于错误检查的代码的方法，具有m个符号的第一类型的数据串，具有n个符号的第二类型的数据串，m和n是自然数，m

45. 发明授权

US5500679A Method and apparatus for deriving a video signal corresponding to a standard definition signal from a high definition signal 失效
标题翻译：用于从高清晰度信号导出与标准清晰度信号对应的视频信号的方法和装置
公开(公告)号：US5500679A
公开(公告)日：1996-03-19
申请号：US314518
申请日：1994-09-28
申请人： Seiji Higurashi , Yasuhiko Teranishi , Yasuaki Yamada , Takeo Ohishi
发明人： Seiji Higurashi , Yasuhiko Teranishi , Yasuaki Yamada , Takeo Ohishi
IPC分类号： H04N7/015 , H04N7/46 , H04N7/01
CPC分类号： H04N19/59 , H04N19/63 , H04N19/30
摘要： A standard definition (SD) corresponding image is derived from a high definition (HD) image by performing a vertical line sub-sampling for every field with a ratio of an N:1, where N is an odd number greater than 1. One of the simple sub-sampling methods, the pyramidal coding method and the sub-band coding method may be used. For first fields, every third line is derived. For the remaining fields, every third line positioned at the center of the lines derived from the first field is derived by taking positional relation thereof on a reproduced image screen into consideration. As a result, it is possible to obtain an SD corresponding image having an unbroken interlace structure.
摘要翻译：通过对N = 1的比例为N的每个场进行垂直线次采样从高分辨率（HD）图像导出标准清晰度（SD）对应图像，其中N是大于1的奇数。可以使用简单的子采样方法，金字塔编码方法和子带编码方法。对于第一个字段，每三行都派生出来。对于剩余的场，考虑到在再现的图像屏幕上的位置关系，导出位于从第一场导出的线的中心的每三行。结果，可以获得具有不间断隔行扫描结构的SD对应图像。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式