Title:
ＦＭ中継装置
Document Type and Number:
Japanese Patent JP7113438
Kind Code:
B2
Abstract:
To provide a technique for suppressing interference waves of the same frequency represented by wraparound waves in a relay station of an FM broadcasting system that forms a single frequency network.SOLUTION: Receiving units (3A and 3B) receive broadcasting waves for FM synchronous broadcasting with two reception antennas (2A and 2B). A signal synthesizing unit (40) synthesizes two received signals obtained by the two reception antennas so that phases of interference wave components which are signal components based on interference waves are reversed-phases with each other and signal strengths of the interference wave components are the same. A signal reproduction unit (41) generates a transmission signal by demodulating the synthesized signal from the signal synthesizing unit and re-modulating the demodulated signal.SELECTED DRAWING: Figure 2
Inventors:
Kenji Kono
Makoto Kaijima
Toshiyuki Mineyoshi
Hiroshi Okubo
▲恵▼良 勝治
Shozo Iwaki
Yamane Minoru
Daiichiro Ueda
Makoto Kaijima
Toshiyuki Mineyoshi
Hiroshi Okubo
▲恵▼良 勝治
Shozo Iwaki
Yamane Minoru
Daiichiro Ueda
Application Number:
JP2020157757A
Publication Date:
August 05, 2022
Filing Date:
September 18, 2020
Export Citation:
Assignee:
Nippon Communication Equipment Co., Ltd.
Yamaguchi Broadcasting Co., Ltd.
Nhk Technologies Co., Ltd.
Yamaguchi Broadcasting Co., Ltd.
Nhk Technologies Co., Ltd.
International Classes:
H04B7/15; H04B1/10; H04B7/005; H04B7/0408
Domestic Patent References:
| JP5218991A | ||||
| JP11298421A | ||||
| JP2001007750A | ||||
| JP2014112817A |
Foreign References:
| WO2001099308A1 |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation
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