Projector and method for controlling projector

• US 9,977,318 B2
• Filed: 01/18/2017
• Issued: 05/22/2018
• Est. Priority Date: 01/20/2016
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ozawa, Takaaki
• Primary Examiner(s): Chowdhury, Sultan
• Application Number:
  US15/408,765
• Publication Number:
  US 20170205698A1
• Time in Patent Office: 489 Days
• CPC Class Codes: G03B 21/005 Projectors using an electronic spatial light modulator but not peculiar thereto
• CPC Class Codes: G03B 21/2053 Intensity control of illuminating light controlled by video signal processing H04N5/74 or H04N9/31

Abstract

A projector includes a light source section that outputs first light, a power supply section that generates electric power in both a case where the power supply section is connected to a commercial AC power supply having first power supply voltage and a case where the power supply section is connected to a commercial AC power supply having second power supply voltage lower than the first power supply voltage, a light source drive section that controls the amount of first light, and a control section that allows execution of a function of controlling the amount of first light in the case where the power supply section is connected to the commercial AC power supply having first power supply voltage and restricts the execution of the function in the case where the power supply section is connected to the commercial AC power supply having second power supply voltage.

Claims

1. A projector comprising:

a projection section that includes a light source section that outputs first light and a light modulation section that outputs second light that is the first light modulated in accordance with image information, the projection section projecting the second light on a projection surface;

a power supply section that generates electric power that drives the projector and generates the electric power in both a case where the power supply section is connected to a first power supply having first power supply voltage and a case where the power supply section is connected to a second power supply having second power supply voltage lower than the first power supply voltage;

a light source drive section that controls an amount of the first light outputted from the light source section; and

a control section that allows execution of a function of controlling the amount of the first light from the light source section in the case where the power supply section is connected to the first power supply and restricts the execution of the function in the case where the power supply section is connected to the second power supply,

wherein the control section causes the projection section to project a displayed content indicating that selection of the function is not accepted in the case where the power supply section is connected to the second power supply.

2. The projector according to claim 1,

wherein the control section causes the projection section to project information representing that selection of the function is not accepted for a predetermined period after the projection section starts projection.

3. The projector according to claim 1,

wherein the control section causes the projection section to project a menu screen for operation of specifying whether or not the function is allowed to be executed, and

in the case where the power supply section is connected to the second power supply, the control section does not accept the operation that is performed on the menu screen and specifies whether or not the function is allowed to be executed.

4. The projector according to claim 3,

wherein the light source drive section

uses the function to control the amount of the first light to be the amount in a first state or the amount in a second state different from the first state,

controls the amount of the first light to be the amount in the first state or the second state set by operation performed on the menu screen in the case where the power supply section is connected to the first power supply, and

controls the amount of the first light to be the amount in the second state in the case where the power supply section is connected to the second power supply.

5. A method for controlling a projector including a projection section that includes a light source section that outputs first light and a light modulation section that outputs second light that is the first light modulated in accordance with image information, the projection section projecting the second light on a projection surface, and a power supply section that generates electric power that drives the projector and generates the electric power in both a case where the power supply section is connected to a first power supply having first power supply voltage and a case where the power supply section is connected to a second power supply having second power supply voltage lower than the first power supply voltage, the method comprising:

controlling an amount of the first light outputted from the light source section; and

allowing execution of a function of controlling the amount of the first light from the light source section in the case where the power supply section is connected to the first power supply and restricting the execution of the function in the case where the power supply section is connected to the second power supply,

wherein the projection section projects a displayed content indicating that selection of the function is not accepted in the case where the power supply section is connected to the second power supply.