PROJECTOR AND CONTROL METHOD THEREOF

• US 20080291404A1
• Filed: 02/26/2008
• Published: 11/27/2008
• Est. Priority Date: 03/09/2007
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nagumo, Hirobumi, SHIRASU, Toshiyuki
• Granted Patent: US 7,993,015 B2
• Time in Patent Office: Days
• US Class Current: 353/85
• CPC Class Codes: G03B 21/2086 Security or safety means in lamp houses
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor
• CPC Class Codes: H04N 9/315 Modulator illumination systems general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20
• CPC Class Codes: H04N 9/3191 Testing thereof testing of displays in general G09G3/006

Abstract

Disclosed herein is a projector that can be loaded with lamps of a plurality of kinds, each of a plurality of the lamps loadable into the projector being given a lamp serial code formed by arranging lamp information on the lamp and a check sum in predetermined order, the projector including: a control circuit for performing a clocking operation of a lamp timer for managing a use time of the lamp loaded in the projector; and a memory for storing information.

Claims

1. A projector that can be loaded with lamps of a plurality of kinds, each of a plurality of said lamps loadable into said projector being given a lamp serial code formed by arranging lamp information on the lamp and a check sum in predetermined order, said projector comprising:

a control circuit for performing a clocking operation of a lamp timer for managing a use time of said lamp loaded in said projector; and

a memory for storing information;

wherein when said lamp loaded in said projector is replaced with a predetermined lamp, said control circuit receives input of said lamp serial code attached to the predetermined lamp,

by checking a part corresponding to said check sum in information input as said lamp serial code, said control circuit determines whether the input information is a valid said lamp serial code,

when said control circuit determines that the input information is a valid said lamp serial code, said control circuit resets said lamp timer, and resumes the clocking operation of said lamp timer, and

said control circuit stores, in said memory, contents of said lamp serial code and a clocked time of said lamp timer as log history data for said predetermined lamp with which replacement has been made.

2. The projector according to claim 1,

wherein said control circuit further performs control to display an image based on said log history data stored in said memory.

3. The projector according to claim 1,

wherein when said control circuit determines that the input said information is invalid information other than said lamp serial code, said control circuit further prohibits resetting of said lamp timer and prohibits storing of said log history data in said memory.

4. A control method of a projector that can be loaded with lamps of a plurality of kinds, each of a plurality of said lamps loadable into said projector being given a lamp serial code formed by arranging lamp information on the lamp and a check sum in predetermined order, said projector including a control circuit for performing a clocking operation of a lamp timer for managing a use time of said lamp loaded in said projector, and a memory for storing information, said control method comprising:

when said lamp loaded in said projector is replaced with a predetermined lamp, said control circuit receiving input of said lamp serial code attached to the predetermined lamp;

by checking a part corresponding to said check sum in information input as said lamp serial code, said control circuit determining whether the input information is a valid said lamp serial code;

when said control circuit determines that the input information is a valid said lamp serial code, said control circuit resetting said lamp timer, and resuming the clocking operation of said lamp timer; and

said control circuit storing, in said memory, contents of said lamp serial code and a clocked time of said lamp timer as log history data for said predetermined lamp with which replacement has been made.