Method for adjusting contrast ratio of projector and projector
The invention provides a method for adjusting a contrast ratio of a projector. The method comprises the following steps that: an all-white image or an all-black image is input into the projector, and is projected on a projection plane by the projector to form an all-white picture or an all-black pic...
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| creator | CONG ZHIJIE |
| description | The invention provides a method for adjusting a contrast ratio of a projector. The method comprises the following steps that: an all-white image or an all-black image is input into the projector, and is projected on a projection plane by the projector to form an all-white picture or an all-black picture; a sensing unit senses the picture on the projection plane and transmits the sensed picture to a mainboard; and the mainboard controls a light source group to switch modes according to the picture on the projection plane, wherein when the projection plane is the all-white picture, the mainboard controls the light source group to be switched to a brightness mode, and a brightness value of the projection plane is a first brightness value, and when the projection plane is the all-black picture, the mainboard controls the light source group to be switched to a color mode, a brightness value of the projection plane is a fourth brightness value, and a ratio of the first brightness value to the fourth brightness valu |
| format | Patent |
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The method comprises the following steps that: an all-white image or an all-black image is input into the projector, and is projected on a projection plane by the projector to form an all-white picture or an all-black picture; a sensing unit senses the picture on the projection plane and transmits the sensed picture to a mainboard; and the mainboard controls a light source group to switch modes according to the picture on the projection plane, wherein when the projection plane is the all-white picture, the mainboard controls the light source group to be switched to a brightness mode, and a brightness value of the projection plane is a first brightness value, and when the projection plane is the all-black picture, the mainboard controls the light source group to be switched to a color mode, a brightness value of the projection plane is a fourth brightness value, and a ratio of the first brightness value to the fourth brightness valu</description><language>chi ; eng</language><subject>ACCESSORIES THEREFOR ; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES ; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ; CINEMATOGRAPHY ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRIC HEATING ; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; ELECTROGRAPHY ; HOLOGRAPHY ; PHOTOGRAPHY ; PHYSICS ; PICTORIAL COMMUNICATION, e.g. TELEVISION</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120801&DB=EPODOC&CC=CN&NR=102621785A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120801&DB=EPODOC&CC=CN&NR=102621785A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CONG ZHIJIE</creatorcontrib><title>Method for adjusting contrast ratio of projector and projector</title><description>The invention provides a method for adjusting a contrast ratio of a projector. 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The method comprises the following steps that: an all-white image or an all-black image is input into the projector, and is projected on a projection plane by the projector to form an all-white picture or an all-black picture; a sensing unit senses the picture on the projection plane and transmits the sensed picture to a mainboard; and the mainboard controls a light source group to switch modes according to the picture on the projection plane, wherein when the projection plane is the all-white picture, the mainboard controls the light source group to be switched to a brightness mode, and a brightness value of the projection plane is a first brightness value, and when the projection plane is the all-black picture, the mainboard controls the light source group to be switched to a color mode, a brightness value of the projection plane is a fourth brightness value, and a ratio of the first brightness value to the fourth brightness valu</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION |
| title | Method for adjusting contrast ratio of projector and projector |
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