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Title:
MULTI-SYSTEM RECEIVER
Document Type and Number:
Japanese Patent JP2001285752
Kind Code:
A
Abstract:

To provide a receiver capable of smoothly changing over images at the time of automatically switching to a demodulation circuit corresponding to tuned modulated waves, seamlessly changing the channels of digital and analog broadcasting and switching an analog broadcasting program to a digital broadcasting program in the receiver for receiving the digital broadcasting and the analog broadcasting.

NTSC carrier wave components in intermediate frequency IF signals and VSB pilot signals are extracted and judged and changeover to the demodulation circuits 13 and 14 matched with received broadcasting waves is performed on the basis of a judgment result. Analog and digital simultaneous broadcasting programs are stored from EPG, the changeover to the analog broadcasting is preferentially performed in the case of a high-speed channel search, and in the case of simultaneous broadcasting, the analog broadcasting is displayed on a screen first and it is switched to the digital broadcasting program as soon as data decoding is ended.


Inventors:
NINOMIYA KUNIO
UEMURA TAKAMI
SATO HIROYUKI
Application Number:
JP2000000095335
Publication Date:
October 12, 2001
Filing Date:
March 30, 2000
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04J9/00; H04L27/00; H04L27/06; H04L27/38; H04N5/44; H04N5/455; H04N5/46; H04N7/08; H04N7/081; H04B1/40; (IPC1-7): H04N5/46; H04J9/00; H04L27/38; H04L27/06; H04N5/44; H04N5/455; H04N7/08; H04N7/081
Attorney, Agent or Firm:
Kenichi Hayase