Invention Grant
- Patent Title: Projection display apparatus having stored information for authenticating light source
- Patent Title (中): 具有存储用于认证光源的信息的投影显示装置
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Application No.: US12499007Application Date: 2009-07-07
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Publication No.: US08523368B2Publication Date: 2013-09-03
- Inventor: Takeshi Fujisaki , Hiromitsu Okuno
- Applicant: Takeshi Fujisaki , Hiromitsu Okuno
- Applicant Address: JP Moriguchi-Shi, Osaka
- Assignee: SANYO Electric Co., Ltd.
- Current Assignee: SANYO Electric Co., Ltd.
- Current Assignee Address: JP Moriguchi-Shi, Osaka
- Agency: NDQ&M Watchstone LLP
- Priority: JP2008-178303 20080708
- Main IPC: G03B21/00
- IPC: G03B21/00 ; G03B21/14 ; G03B21/20 ; G03B21/22
Abstract:
A projection image display apparatus including a detachably attachable light source unit includes: a storage means provided to the light source unit and having previously stored therein information that the light source unit is a genuine product; a determination means making a comparison with the information in the storage means to determine whether the light source unit is the genuine product; and a light source control means controlling an output of the light source unit in accordance with a result from the determination means.
Public/Granted literature
- US20100007856A1 Projection Image Display Apparatus Public/Granted day:2010-01-14
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