Waveform Shaping Device, Equalizer, Receiving System, Method Of Controlling Waveform Shaping Device, Control Program, And Computer-Readable Medium In Which Control Program Is Recorded

(2-1. Configuration Example 1 of Communication System)

[0084]FIG. 1 is a block diagram showing a configuration of a communication system 1000a including the waveform shaping device 100. As shown in FIG. 1, the communication system 1000a includes at least a transmitting system 600 and a receiving system 700a, and the transmitting system 600 and the receiving system 700a are communicably connected with each other via a communication path 900.

[0085]The transmitting system 600 transmits a signal indicative of various data such as video images and audios via the communication path 900 to the receiving system 700a, and includes functions normally provided at the transmission end, such as coding and modulation of signals etc. A signal transmitted from the transmitting system 600 is overlapped with a clock signal.

[0086]The receiving system 700a receives a signal from the transmitting system 600 via the communication path 900, and includes functions normally provided at the reception end, such a

(2-6. Configuration Example 2 of Communication System)

[0111]The receiving system 700a and the relay device 910a shown in FIG. 1 are designed such that the waveform shaping device 100 is positioned at a stage prior to the equalizer 800 and the output signal Sout from the waveform shaping device 100 is inputted to the equalizer 800.

[0112]Alternatively, the waveform shaping device 100 may be positioned at a stage posterior to the equalizer 800.

[0113]With reference to FIG. 5, the following explains a configuration of a communication system 1000b including the waveform shaping device 100. FIG. 5 is a block diagram showing the configuration of the communication system 1000b including the waveform shaping device 100. As shown in FIG. 5, the communication system 1000b includes a receiving system 700b instead of the receiving system 700a of the communication system 1000b.

[0114]Similarly with the receiving system 700a, the receiving system 700b receives a signal from the transmitting system 600

(3-5. Configuration Example 3 of Waveform Shaping Device)

[0182]The nonlinear process section 102a and the nonlinear process section 102b explained above include the sign converting section 41. Alternatively, the nonlinear process section of the present invention may be arranged not to include the sign converting section 41 as long as nonlinear operation carried out on the high-frequency signal S11 maintains plus and minus signs of the high-frequency signal S11.

[0183]With reference to FIG. 15, the following explains a configuration example of a waveform shaping device 100c which does not include the sign converting section 41. FIG. 15 is a block diagram showing a configuration of the waveform shaping device 100c.

[0184]As shown in FIG. 15, the waveform shaping device 100c includes a high-frequency component extracting section 11, a nonlinear process section 102c, and an addition section 15. The nonlinear process section 102c includes a nonlinear operation section (odd exponentiation ope