Title:
VIDEO DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP3671620
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To instantly and surely find out whether a light source is abnormal or a power source is abnormal by allowing a control section to receive a power source abnormal signal from the power source, when the power source is abnormal, to receive a light source abnormal signal from the light source when the light source does not light, and to instruct them to an abnormality display part to display.
SOLUTION: A lamp power source 53 detects if a high voltage output is outputted when an output of high voltage should be given and transmits a lamp power source output abnormality detection signal ES to a control section 50 when the high voltage output is not outputted. A lamp 35 knows whether is lighting or not by detecting if a current flows through the lamp 35 and transmits a lamp non-lit detection signal EL, when the lamp is not lit. An abnormality display part 16 informs a user of abnormality information which is causing a lamp non-lighting or processing information on those through the control of the control section 50 when the lamp does not light.
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Inventors:
Nobuo Hasegawa
Kunio Hakamada
Genichiro Kuboji
Fukagawa Yuya
Kunio Hakamada
Genichiro Kuboji
Fukagawa Yuya
Application Number:
JP27455897A
Publication Date:
July 13, 2005
Filing Date:
October 07, 1997
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G03B21/00; G09G3/36; H04N5/74; (IPC1-7): H04N5/74; G03B21/00; G09G3/36
Domestic Patent References:
| JP3145288A | ||||
| JP4368926A | ||||
| JP59274558A |
Attorney, Agent or Firm:
Yoshitsuno Kakuda
Hironobu Isoyama
Hironobu Isoyama
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