US 10,095,096 B2Granted

Projector, light source controller, and light source control method

AssigneeCoretronic Corporation

InventorsJian-Jiun Wu, Liang-Chieh Weng, Mu-Ting Lin

Life of this patent

Estimating the term…

Loading patent…

Abstract

A projector, a light source controller, and a light source control method are provided. The projector includes a light source, a wavelength conversion device, and a light source controller. The light source is adapted to provide a light beam. The wavelength conversion device is adapted to convert a wavelength of the light beam into a plurality of converted wavelengths. The light source controller includes a controller and a selector. The controller is adapted to receive a synchronization signal, and generate an enable signal and a plurality of indication signals according to the synchronization signal. The enable signal has a plurality of pulses, and there is an interval time between adjacent two pulses. The selector is adapted to select one of the control voltages according to the enable signal and the indication signals to generate a light source control signal.

Claims36

Dependent claims

A projector, comprising:

a first light source, adapted to provide a first light beam;
a wavelength conversion device, adapted to convert a wavelength of the first light beam into a plurality of converted wavelengths;
and
a first light source controller, coupled to the first light source, and adapted to drive the first light source, wherein the first light source controller comprising:
a first controller, adapted to receive a synchronization signal, and adapted to generate a first enable signal and a plurality of first indication signals corresponding to the first enable signal according to the synchronization signal, wherein the synchronization signal has a working period, the first enable signal has a plurality of first pulses, and there is a first interval time between adjacent two first pulses;
and
a first selector, coupled to the first controller, and adapted to receive a plurality of first control voltages, the first enable signal, and the first indication signals, and adapted to select one of the first control voltages according to the first enable signal and the first indication signals to generate a first light source control signal, wherein the first light source control signal is adapted to control a light-emitting intensity of the first light beam.

4 more elements

A light source controller, comprising:

a controller, adapted to receive a synchronization signal, and adapted to generate an enable signal and a plurality of indication signals corresponding to the enable signal according to the synchronization signal, wherein the synchronization signal has a working period, the enable signal has a plurality of pulses, and there is an interval time between adjacent two pulses;
and
a selector, coupled to the controller, and adapted to receive a plurality of control voltages, the enable signal, and the indication signals, and adapted to select one of the control voltages according to the enable signal and the indication signals to generate a light source control signal, wherein the light source control signal is adapted to control a light-emitting intensity of a light source.

A light source control method, adapted to a projector, comprising:

providing a first controller to receive a synchronization signal, wherein the synchronization signal has a working period;
generating a first enable signal and a plurality of first indication signals corresponding to the first enable signal by the first controller according to the synchronization signal, wherein the first enable signal has a plurality of first pulses, and there is a first interval time between adjacent two first pulses;
and
providing a first selector to receive a plurality of first control voltages, the first enable signal, and the first indication signals, and selecting one of the first control voltages according to the first enable signal and the first indication signals to generate a first light source control signal, wherein the first light source control signal is adapted to control an intensity of a first light beam.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/916,217Filed 8 Mar 2018
Priority: CN 2017 1 014034010 Mar 2017
Published: US 2018/0259838 A113 Sep 2018
Granted: 9 Oct 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G03B 21/2053
Lamp housings: intensity control of illuminating light
G03B 33/08
Colour photography, other than mere exposure or projection of a colour film: sequential recording or projection
G03B 21/204
LED or laser light sources: using secondary light emission, e.g. luminescence or fluorescence
G03B
Apparatus or arrangements for taking photographs or for projecting or viewing them