Projector and control method thereof

• US 8,016,433 B2
• Filed: 02/22/2008
• Issued: 09/13/2011
• Est. Priority Date: 03/09/2007
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Ishida, Tessho, Oka, Daizo, Shirasu, Toshiyuki, Nagumo, Hirobumi
• Primary Examiner(s): Ko; Tony
• Assistant Examiner(s): Reilly-Diakun; Jori S
• Application Number:
  US12/035,835
• Publication Number:
  US 20080297736A1
• Time in Patent Office: 1,299 Days
• Field of Search: 353 30- 31, 353/69, 353/72, 353 85- 87, 353/122, 315/291, 315293-294
• US Class Current: 353/85
• CPC Class Codes: G03B 21/20 Lamp housings
• CPC Class Codes: G03B 21/2026 Gas discharge type light sources, e.g. arcs
• CPC Class Codes: G03B 21/206 Control of light source other than position or intensity

Abstract

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 including at least a minimum wattage and a maximum wattage of the lamp and a check sum in predetermined order, the projector including: a lamp power supply for driving the lamp loaded in the projector, the lamp power supply being provided in advance with a plurality of mode ranges each as a range from a minimum wattage to a maximum wattage of output of the lamp power supply, and one predetermined mode range of the plurality of mode ranges being freely set in the lamp power supply; and a control circuit for controlling the lamp power supply.

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 including at least a minimum wattage and a maximum wattage of the lamp and a check sum in predetermined order, said projector comprising:

a lamp power supply for driving a lamp loaded in said projector, said lamp power supply being provided in advance with a plurality of mode ranges each as a range from a minimum wattage to a maximum wattage of output of said lamp power supply, and one predetermined mode range of said plurality of mode ranges being freely set in said lamp power supply; and

a control circuit for controlling said lamp power supply and checking an accuracy of said lamp serial code using said check sum;

wherein said control circuit identifies a range from the minimum wattage to the maximum wattage included in said lamp serial code given to said lamp loaded in said projector as a code range, and compares the code range with said predetermined mode range set in said lamp power supply,

said control circuit determines another range that is not below said minimum wattage nor exceeding said maximum wattage included in said lamp serial code as a lamp driving controlling range within which the driving of said lamp power supply is controlled on a basis of a result of comparison of said code range with said mode range, and

said control circuit controls the driving of said lamp power supply within the determined lamp driving controlling range.

2. The projector according to claim 1,

wherein said control circuit determines a range in which said code different mode range or said plurality of mode ranges and said mode range overlap each other as said lamp driving controlling range.

3. 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 including at least a minimum wattage and a maximum wattage of the lamp and a check sum in predetermined order, said projector including a lamp power supply for driving said lamp loaded in said projector, said lamp power supply being provided in advance with a plurality of mode ranges each as a range from a minimum wattage to a maximum wattage of output of said lamp power supply, and one predetermined mode range of said plurality of mode ranges being freely set in said lamp power supply, and a control circuit for controlling said lamp power supply, said control method comprising:

said control circuit checking an accuracy of said lamp serial code using said check sum;

said control circuit identifying a range from the minimum wattage to the maximum wattage included in said lamp serial code given to said lamp loaded in said projector as a code range, and comparing the code range with said predetermined mode range set in said lamp power supply;

said control circuit determining another range that is not below said minimum wattage nor exceeding said maximum wattage included in said lamp serial code as a lamp driving controlling range within which the driving of said lamp power supply is controlled on a basis of a result of comparison of said code range with said mode range; and

said control circuit controlling the driving of said lamp power supply within the determined lamp driving controlling range.