# US 2013/0155210 A1 · Shutter Glasses, Three-Dimensional Video System and Shutter Glasses Control Method

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- Number: US 2013/0155210 A1
- Document ID: US20130155210A1
- Status: Published application
- Kind: A1
- Application number: 13/412,576
- Filed: 2012-03-05
- Published: 2013-06-20
- Earliest claimed: 2011-12-20
- Inventors: Yuan-Lang Ma
- Web page: https://patentgrep.com/patent/US20130155210A1

## CPC

- H04N 13/398: Synchronisation thereof; Control thereof
- H04N 13/341: using temporal multiplexing
- H04N 2213/008: Aspects relating to glasses for viewing stereoscopic images
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Shutter glasses for a three-dimensional video system includes a first lens, a second lens, a lens control module coupled to the first lens and the second lens for alternately blocking the first lens and the second lens according to a synchronization signal, an image capturing device for capturing a plurality of images including a synchronization image outputted from a display of the three-dimensional video system, and a timing generating module coupled to the image capturing device for generating the synchronization signal according to the synchronization image.

## Claims

### Claim 1

A shutter glasses for a three-dimensional video system, comprising:
a first lens;
a second lens;
a lens control module, coupled to the first lens and the second lens, for alternately blocking the first lens and the second lens according to a synchronization signal;
an image capturing device, for capturing a plurality of images including a synchronization image outputted from a display of the three-dimensional video system; and
a timing generating module, coupled to the image capturing device, for generating the synchronization signal according to the synchronization image.

### Claim 2 (depends on 1)

The shutter glasses of claim 1, wherein the timing generating module comprises:
an oscillator, for generating a clock signal; and
a calibrating unit, coupled to the image capturing device and the oscillator, for adjusting the clock signal according to the synchronization image, making frequency and phase of the clock signal be identical to the synchronization image, to generate the synchronization signal.

### Claim 3 (depends on 2)

The shutter glasses of claim 2, wherein the calibrating unit comprises:
a comparing unit, for comparing frequency and phase of the clock signal and the synchronization image, to generate a comparison result; and
an adjusting unit, for adjusting the clock signal according to the comparison result, making frequency and phase of the clock signal be identical to the synchronization image, to generate the synchronization signal.

### Claim 4 (depends on 1)

The shutter glasses of claim 1, wherein the synchronization image is set in front of the plurality of images.

### Claim 5

A three-dimensional video system for displaying three-dimensional images, comprising:
a display;
an image display control unit, coupled to the display, for controlling the display to generate a plurality of images including a synchronization image; and
shutter glasses, comprising:
a first lens;
a second lens;
a lens control module, coupled to the first lens and the second lens, for alternately blocking the first lens and the second lens according to a synchronization signal;
an image capturing device, for capturing the synchronization image outputted from the display; and
a timing generating module, coupled to the image capturing device, for generating the synchronization signal according to the synchronization image.

### Claim 6 (depends on 5)

The three-dimensional video system of claim 5, wherein the timing generating module comprises:
an oscillator, for generating a clock signal; and
a calibrating unit, coupled to the image capturing device and the oscillator, for adjusting the clock signal according to the synchronization image, making frequency and phase of the clock signal be identical to the synchronization image, to generate the synchronization signal.

### Claim 7 (depends on 6)

The three-dimensional video system of claim 6, wherein the calibrating unit comprises:
a comparing unit, for comparing frequency and phase of the clock signal and the synchronization image, to generate a comparison result; and
an adjusting unit, for adjusting the clock signal according to the comparison result, making frequency and phase of the clock signal be identical to the synchronization image, to generate the synchronization signal.

### Claim 8 (depends on 5)

The three-dimensional video system of claim 5, wherein the synchronization image is set in front of the plurality of images.

### Claim 9

A shutter glasses control method for a three-dimensional video system, comprising:
outputting a plurality of images including a synchronization image from a display of the three-dimensional video system;
generating a synchronization signal according to the synchronization image; and
alternately blocking a first lens and a second lens of shutter glasses according to the synchronization signal.

### Claim 10 (depends on 9)

The shutter glasses control method of claim 9, wherein the step of generating the synchronization signal according to the synchronization image comprises:
generating a clock signal; and
adjusting the clock signal according to the synchronization image, making frequency and phase of the clock signal be identical to the synchronization image, to generate the synchronization signal.

### Claim 11 (depends on 10)

The shutter glasses control method of claim 10, wherein the step of adjusting the clock signal according to the synchronization image comprises:
comparing frequency and phase of the clock signal and the synchronization image, to generate a comparison result; and
adjusting the clock signal according to the comparison result, making frequency and phase of the clock signal be identical to the synchronization image, to generate the synchronization signal.

### Claim 12 (depends on 9)

The shutter glasses control method of claim 9, wherein the synchronization image is set in front of the plurality of images.