×

Glasses apparatus and power supply apparatus

  • US 8,890,772 B2
  • Filed: 09/04/2012
  • Issued: 11/18/2014
  • Est. Priority Date: 01/19/2012
  • Status: Active Grant
First Claim
Patent Images

1. A glasses apparatus interlocking with a 3D display device, the glasses apparatus comprising:

  • a shutter glasses;

    a synchronous signal receiver which receives a synchronous signal from the 3D display device;

    a shutter glasses driver which drives the shutter glasses;

    a DC/DC converter which converts a DC voltage provided from a battery; and

    a controller which controls the DC/DC converter to apply the converted DC voltage to the shutter glasses driver through supplying of a PWM signal to the DC/DC converter, and controlling the shutter glasses driver, which is driven by the applied DC voltage, to turn on/off the shutter glasses according to the synchronous signal,wherein the controller comprises;

    a PWM signal generator which generates and provides the PWM signal to the DC/DC converter; and

    a comparator which receives a feedback of the DC voltage output from the DC/DC converter and compares the DC voltage with a preset voltage level,wherein the comparator outputs a LOW signal in response to the level of the output DC voltage of the DC/DC converter being equal to or higher than a first preset level, and outputs a HIGH signal in response to the level of the output DC voltage of the DC/DC converter being equal to or lower than a second preset level.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×