DEVICE FOR INSPECTING BS COMMUNITY RECEPTION INSTALLATION

DEVICE FOR INSPECTING BS COMMUNITY RECEPTION INSTALLATION

PROBLEM TO BE SOLVED: To provide a device for inspecting a BS community reception installation by which the image quality of the reception installation is checked before start of a broadcast service and the reception of all broadcast waves with high quality can be enhanced. SOLUTION: This inspection...

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Hauptverfasser: MINAMI KEI, OBARA MASAHARU, ARATA HIROO, TAMARU OSAMI, NAKAMURA TAKAYUKI
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION
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creator MINAMI KEI
OBARA MASAHARU
ARATA HIROO
TAMARU OSAMI
NAKAMURA TAKAYUKI
description PROBLEM TO BE SOLVED: To provide a device for inspecting a BS community reception installation by which the image quality of the reception installation is checked before start of a broadcast service and the reception of all broadcast waves with high quality can be enhanced. SOLUTION: This inspection device is provided with pseudo random noise(PN) signal generators 5a-5d that intermittently generate a plurality of digital modulation signals with frequencies in the vicinity of the center frequency of a plurality of channels for BS digital broadcasting, in a BS-IF frequency band digital sections 7a-7d, a modulator 9, and a mixer 4 that mixes a plurality of the generated digital modulation signals with a plurality of analog broadcast wave signals in a plurality of channels for BS analog broadcasting and provides an output to the BS-IF community reception installation.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION
title DEVICE FOR INSPECTING BS COMMUNITY RECEPTION INSTALLATION
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