Title:
ケーブル通信装置およびケーブル通信方法
Document Type and Number:
Japanese Patent JP5150146
Kind Code:
B2
Abstract:
A STB 1 of this CATV system includes a diplexer 11, a signal level adjusting unit 30, a splitter 12, a tuner 2, a demodulating unit 3, a memory 17, and a CPU 19. The CPU 19 finds a correct reception level of a downstream signal by arithmetically operating a level correction value which is found based on a detected level adjustment state (state of switches) of the signal level adjusting unit 30 and a reception level after AGC which is found from signal intensity outputted from the demodulating unit 3, and notifies the found reception level to a CATV center station 40 by means of an upstream signal.
Inventors:
Yuya Kudo
Masami Osawa
Masami Osawa
Application Number:
JP2007160278A
Publication Date:
February 20, 2013
Filing Date:
June 18, 2007
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04N7/16; H04B1/16; H04H20/78; H04N7/10; H04N21/442; H04N21/6583
Domestic Patent References:
| JP2005006216A | ||||
| JP1126885A |
Foreign References:
| WO2005067174A1 |
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office
Saichi Suyama
Yukio Kawahara
Satoshi Yamashita
Hideaki Suyama
Saichi Suyama
Yukio Kawahara
Satoshi Yamashita
Hideaki Suyama