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    • 4. 发明授权
    • Information processor and information processing method, display device, and program
    • 信息处理器和信息处理方法,显示设备和程序
    • US08451966B2
    • 2013-05-28
    • US12567837
    • 2009-09-28
    • Hidetoshi KawauchiToshiyuki MiyauchiTakashi YokokawaTakuya OkamotoHiroyuki Kamata
    • Hidetoshi KawauchiToshiyuki MiyauchiTakashi YokokawaTakuya OkamotoHiroyuki Kamata
    • H03D1/06H03K5/01H03K5/159
    • H04L25/0212H04L25/022H04L25/0232H04L27/2647H04L27/2665
    • Disclosed herein is an information processor, including: a receiving section configured to receive an OFDM signal transmitted in accordance with an OFDM system; a FFT arithmetically operating section configured to carry out FFT for a signal within a predetermined interval of the OFDM signal; a delay profile estimating section configured to estimate delay profiles from the OFDM signal received by the receiving section; an inter-symbol interference amount estimating section configured to estimate inter-symbol interference amounts for a plurality of candidates for the predetermined interval, respectively, by using the delay profiles estimated by the delay profile estimating section; and a searching section configured to search for the candidate having the minimum inter-symbol interference amount estimated by the inter-symbol interference amount estimating section from among the plurality of candidates in the predetermined interval, and supply data on the candidate thus searched for as the predetermined interval to the FFT arithmetically operating section.
    • 本文公开了一种信息处理器,包括:接收部分,被配置为接收根据OFDM系统传输的OFDM信号; FFT算术运算部,被配置为对所述OFDM信号的预定间隔内的信号进行FFT; 延迟分布估计部,被配置为从所述接收部接收到的OFDM信号估计延迟分布; 符号间干扰量估计部,被配置为通过使用由所述延迟分布估计部估计出的延迟分布,分别估计所述预定间隔的多个候选的符号间干扰量; 以及搜索部,被配置为从所述预定间隔中的所述多个候选中搜索具有由所述符号间干扰量估计部估计的最小符号间干扰量的候选,并且将所搜索的候选者的数据提供为 到FFT运算部分的预定间隔。
    • 5. 发明申请
    • INFORMATION PROCESSOR AND INFORMATION PROCESSING METHOD, DISPLAY DEVICE, AND PROGRAM
    • 信息处理器和信息处理方法,显示设备和程序
    • US20100080329A1
    • 2010-04-01
    • US12567837
    • 2009-09-28
    • Hidetoshi KawauchiToshiyuki MiyauchiTakashi YokokawaTakuya OkamotoHiroyuki Kamata
    • Hidetoshi KawauchiToshiyuki MiyauchiTakashi YokokawaTakuya OkamotoHiroyuki Kamata
    • H04B1/10
    • H04L25/0212H04L25/022H04L25/0232H04L27/2647H04L27/2665
    • Disclosed herein is an information processor, including: a receiving section configured to receive an OFDM signal transmitted in accordance with an OFDM system; a FFT arithmetically operating section configured to carry out FFT for a signal within a predetermined interval of the OFDM signal; a delay profile estimating section configured to estimate delay profiles from the OFDM signal received by the receiving section; an inter-symbol interference amount estimating section configured to estimate inter-symbol interference amounts for a plurality of candidates for the predetermined interval, respectively, by using the delay profiles estimated by the delay profile estimating section; and a searching section configured to search for the candidate having the minimum inter-symbol interference amount estimated by the inter-symbol interference amount estimating section from among the plurality of candidates in the predetermined interval, and supply data on the candidate thus searched for as the predetermined interval to the FFT arithmetically operating section.
    • 本文公开了一种信息处理器,包括:接收部分,被配置为接收根据OFDM系统传输的OFDM信号; FFT算术运算部,被配置为对所述OFDM信号的预定间隔内的信号进行FFT; 延迟分布估计部,被配置为从所述接收部接收到的OFDM信号估计延迟分布; 符号间干扰量估计部,被配置为通过使用由所述延迟分布估计部估计出的延迟分布,分别估计所述预定间隔的多个候选的符号间干扰量; 以及搜索部,被配置为从所述预定间隔中的所述多个候选中搜索具有由所述符号间干扰量估计部估计的最小符号间干扰量的候选,并且将所搜索的候选者的数据提供为 到FFT运算部分的预定间隔。
    • 7. 发明申请
    • RECEIVING DEVICE, RECEIVING METHOD, PROGRAM, AND RECEIVING SYSTEM
    • 接收设备,接收方法,程序和接收系统
    • US20140010332A1
    • 2014-01-09
    • US14006871
    • 2012-03-23
    • Takuya OkamotoHiroo TakahashiYuken Goto
    • Takuya OkamotoHiroo TakahashiYuken Goto
    • H04L27/26
    • H04L27/2666H03J7/02H04B1/28H04H20/77H04H40/27H04N5/4401H04N5/455
    • The present technology relates to a receiving device, a receiving method, a program, and a receiving system which may improve reception performance in the case of receiving a signal with a variable frequency band. A receiving device according to an embodiment of the present technology includes a demodulation unit configured to convert a received signal to a baseband signal in the case where a first frequency differs from a second frequency, wherein the first frequency is a center frequency in a band of the received signal, the second frequency is a center frequency in a band of a desired signal included in a part of the band of the received signal, and a DC component of the baseband signal is to be a frequency in the vicinity of the second frequency. The present technology may be applied to a receiver which receives an OFDM signal of DVB-C2.
    • 本技术涉及在接收具有可变频带的信号的情况下可以提高接收性能的接收装置,接收方法,程序和接收系统。 根据本技术的实施例的接收装置包括解调单元,被配置为在第一频率与第二频率不同的情况下将接收信号转换为基带信号,其中第一频率是频带中的中心频率 接收信号,第二频率是包括在接收信号的频带的一部分中的期望信号的频带中的中心频率,并且基带信号的直流分量将成为第二频率附近的频率 。 本技术可以应用于接收DVB-C2的OFDM信号的接收机。
    • 10. 发明授权
    • Receiving device, receiving method, program, and receiving system
    • 接收设备,接收方式,程序和接收系统
    • US09203678B2
    • 2015-12-01
    • US14006871
    • 2012-03-23
    • Takuya OkamotoHiroo TakahashiYuken Goto
    • Takuya OkamotoHiroo TakahashiYuken Goto
    • H04L27/26H04B1/28H03J7/02H04N5/44H04N5/455
    • H04L27/2666H03J7/02H04B1/28H04H20/77H04H40/27H04N5/4401H04N5/455
    • The present technology relates to a receiving device, a receiving method, a program, and a receiving system which may improve reception performance in the case of receiving a signal with a variable frequency band. A receiving device according to an embodiment of the present technology includes a demodulation unit configured to convert a received signal to a baseband signal in the case where a first frequency differs from a second frequency, wherein the first frequency is a center frequency in a band of the received signal, the second frequency is a center frequency in a band of a desired signal included in a part of the band of the received signal, and a DC component of the baseband signal is to be a frequency in the vicinity of the second frequency. The present technology may be applied to a receiver which receives an OFDM signal of DVB-C2.
    • 本技术涉及在接收具有可变频带的信号的情况下可以提高接收性能的接收装置,接收方法,程序和接收系统。 根据本技术的实施例的接收装置包括解调单元,被配置为在第一频率与第二频率不同的情况下将接收信号转换为基带信号,其中第一频率是频带中的中心频率 接收信号,第二频率是包括在接收信号的频带的一部分中的期望信号的频带中的中心频率,并且基带信号的直流分量将成为第二频率附近的频率 。 本技术可以应用于接收DVB-C2的OFDM信号的接收机。