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Title:
TRANSMITTER FOR DIGITAL SIGNAL
Document Type and Number:
Japanese Patent JP3400350
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To prevent other equipments arranged near a coaxial cable from being affected by the deterioration of an SN ratio and malfunction due to the radiation of the high frequency components of a signal to the outside of the cable.
SOLUTION: A digital signal of 10 bits and 36 MHz outputted from a camera 1 is converted into an NRZ(non-return to zero) signal of 360 Mbps by a parallel/ serial(P/S) conversion circuit 3, the NRZ signal is converted into a scrambled NRZI signal by a scrambling circuit 4, the NRZI signal is inputted to a low pass filter 6 having a block area pole at 540 MHz through a cable driver 5, and the filtered signal is inputted to a waveform equalizer 8 through a coaxial cable 7. An output signal front the equalizer 8 is converted into the original NRZ signal by a descrambling circuit 9, the NRZ signal is converted into the original digital signal of 10 bits and 36 MHz by an S/P conversion circuit 10 and the digital signal is inputted to a VTR 13.


Inventors:
Toshiyuki Yasui
Nobuaki Wada
Application Number:
JP14595498A
Publication Date:
April 28, 2003
Filing Date:
May 27, 1998
Export Citation:
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Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04L25/03; H04B3/50; H04L25/49; (IPC1-7): H04L25/03; H04B3/50; H04L25/49
Domestic Patent References:
JP884124A
Attorney, Agent or Firm:
Masamichi Matsuda