RECEIVER FOR DIGITAL BROADCASTING

Title:

RECEIVER FOR DIGITAL BROADCASTING

Document Type and Number:

Japanese Patent JP2002027006

Kind Code:

A

Abstract:

To maintain stable and suitable receiving characteristics regardless of a ratio between the carrier wave power and noise power of a received signal and further to maintain stable and suitable receiving characteristics, by setting the operating condition of a digital demodulating part while following up a fluctuation, even in the state where the ratio between the carrier wave power and noise power of the received signal fluctuates.

This device is provided with a decision circuit 104 having a function for estimating the ratio between the carrier wave power and the noise power and outputting a signal corresponding to this ratio when performing the digital demodulation of a digital broadcasting signal received in a digital modulated signal processing system 10. In a microcontroller 31 for control, this signal corresponding to the ratio of the carrier wave power and the noise power is received and a digital demodulating part 102 is controlled into optimal state corresponding to the ratio between the carrier wave power and noise power of the received signal.

Inventors:

ADACHI SATOSHI
NODA MASAKI
YOKOUCHI KATSUMASA

Application Number:

JP2000210684A

Publication Date:

January 25, 2002

Filing Date:

July 06, 2000

Export Citation:

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Assignee:

HITACHI LTD
HITACHI MEDIA ELECTRON KK

International Classes:

H04B1/06; H04L27/22; H04N5/44; H04N7/20; H04N17/00; (IPC1-7): H04L27/22; H04B1/06; H04N5/44; H04N7/20; H04N17/00

Attorney, Agent or Firm:

Sakuta Yasuo

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