Related Equipments for Digital TV (DTV)

This equipment is the multipath equalization equipment used for Digital Terrestrial Broadcasting relay station.

It's possible to reduce multipath interference of wave path and signal degradation by noise in the transit trunk which comes to a last-stage relay staion from a key station.

After reducing multipath interference by equalization, the signal point are optimized and it's sent by more than 40 dB of C/N which meets average link design.

Technical guidance of NHK was received and it was developed in conjunction with NHK Integrated Technology Inc.

This equipment is coupling loop interference canceller used for Digital Terrestrial Broadcasting SFN relay station.

Since a relay station of SFN send the same channel as a previous station, the transmission radio wave will feedback to a self reception antenna, cause oscillation and interference.

This equipment cancels the feedback wave electronically and enables broadcast wave relay of SFN.

It also corresponds to a various installation environments of a relay station, because it's possible to cancel a feedback wave accompanied by the long delay time.

Technical guidance of NHK was received and it was developed in conjunction with NHK Integrated Technology Inc.

This equipment reduces interference of a digital broadcasting wave and an analog broadcast wave of an identical channel at Digital Terrestrial Broadcasting relay station.

After reducing more multipath interference by synthesis and equalization,the signal points are optimized and it's sent by more than 40 dB of C/N which meets the average link design.

Technical guidance of NHK was received and it was developed in conjunction with NHK Integrated Technology Inc.

This equipment is the diversity receiver used for Digital Terrestrial Broadcasting relay station.

After compensating the distortion of the frequency response by multipath and compensating degradation of C/N of a received signal by diversity synthesis about the OFDM-IF signal input from 2 antennas, the signal points are optimized and it's sent by more than 40 dB of C/N which meets average link design.

Technical guidance of NHK was received and it was developed in conjunction with NHK Integrated Technology Inc.

This equipment is the IF signal change and the synthetic installation used for Digital Terrestrial Broadcasting relay station.

The delayed time difference in the output of 2 OFDM-IF input signals are adjusted so that it may become identical, and it's possible to do a change or synthetic processing at instance.

After compensating the distortion of the frequency response by multipath and compensating degradation of C/N of a received signal by diversity synthesis, the signal points are optimized and it's sent by more than 40 dB of C/N which meets average link design.

Technical guidance of NHK was received and it was developed in conjunction with NHK Integrated Technology Inc.