Title:
TUNER FOR DEMODULATING SIGNAL CONTAINING GUARD PERIOD INTERVAL, DIGITAL DEMODULATOR, TUNER CONTROL METHOD, DIGITAL DEMODULATOR CONTROL METHOD, TUNER CONTROL PROGRAM, DIGITAL DEMODULATOR CONTROL PROGRAM, AND RECORDING MEDIUM WITH THE PROGRAM STORED
Document Type and Number:
Japanese Patent JP2007074235
Kind Code:
A
Abstract:
To execute optimal power control according to the state of a signal, while maintaining reliability in the data that are acquired from a signal containing guard period interval.
The signal containing the guard period interval includes symbols 52a, 52b, where guard period interval 54a and sub-guard period interval 53b, each having the same waveform mutually and standing adjacent in a row. In a digital demodulating device, having a tuner or demodulator for demodulating these signals, the power consumption of the tuner or the demodulator is reduced during a period that stride the boundary between the two symbols 52a, 52b that adjoin mutually.
Inventors:
UMIKI NOBUYOSHI
Application Number:
JP2005257914A
Publication Date:
March 22, 2007
Filing Date:
September 06, 2005
Export Citation:
Assignee:
SHARP KK
International Classes:
H04J11/00
Attorney, Agent or Firm:
Yoshiyuki Kaji
Makoto Suhara
Makoto Suhara