Abstract: Provided are a method and apparatus for generating a synchronization signal. The method includes generating a square wave signal based on a sensing signal, which shows a motion of a scanner, and a specified threshold signal, generating a reference signal having a phase locked reference frequency, based on the generated square wave signal, and generating a synchronization signal synchronized with the motion of the scanner, based on the generated reference signal. By outputting an image signal according to the generated synchronization signal, the motion of the scanner and the image signal can be synchronized.

Abstract: A sensing apparatus includes a fluxgate module which outputs an analog signal corresponding to terrestrial magnetism using a fluxgate having a magnetic substance core and a driving coil, and an analog-to-digital (A/D) converter which converts an analog signal output from the fluxgate module into a digital signal. The fluxgate module includes first and second current amplifiers for exciting the magnetic substance core by applying pulses to first and second ends of the driving coil, and a pulse restricting part for driving the first and second current amplifiers to apply the pulses and for stopping driving the first and second current amplifiers when converting the analog signal into the digital signal is completed.

Abstract: An apparatus for driving a laser diode (LD) used in an image display. The apparatus includes a signal converter which converts an input image signal into a digital image signal; first through Nth (where N is a positive integer greater than or equal to “1”) current output devices which output currents; a current output device selector which selects the first through Kth (where K is greater than or equal to “1” and smaller than or equal to N) current output devices among the first through Nth current output devices, so as to output a current corresponding to the digital image signal; and an LD unit which emits laser beams corresponding to the currents output from the first through Kth current output devices.

Abstract: A sensing apparatus includes a fluxgate module which outputs an analog signal corresponding to terrestrial magnetism using a fluxgate having a magnetic substance core and a driving coil, and an analog-to-digital (A/D) converter which converts an analog signal output from the fluxgate module into a digital signal. The fluxgate module includes first and second current amplifiers for exciting the magnetic substance core by applying pulses to first and second ends of the driving coil, and a pulse restricting part for driving the first and second current amplifiers to apply the pulses and for stopping driving the first and second current amplifiers when converting the analog signal into the digital signal is completed.

Abstract: In a sensing apparatus, and a control method of a sensing apparatus, the sensing apparatus includes a fluxgate including a driving coil for exciting a magnetic substance core with a current, first and second current amplifiers for applying the current to first and second ends of the driving coil, a pulse generator for generating a pulse to turn on/off the first and second current amplifiers, and a pulse controller for outputting a control signal allowing the pulse to be applied to the first and second current amplifiers, the pulse controller outputting the control signal at a start of a sensing cycle, the fluxgate generating an analog signal due to the excited magnetic substance, and an A/D converter for converting the analog signal from the fluxgate into a digital signal, wherein the pulse controller stops outputting the control signal when the A/D converter outputs the digital signal to the pulse controller.

Abstract: A sensing apparatus having a fluxgate and a control method capable of reducing current applied to drive the fluxgate are disclosed, the sensing apparatus including a driving coil for exciting a magnetic substance core with current, a current amplifier for applying the current to first and second ends of the driving coil, a fluxgate having a pulse generator for generating a pulse to turn on/off the current amplifier, an A/D converter for converting an analog signal from the fluxgate into a digital signal, and a pulse controller for outputting a control signal allowing the pulse to be applied to the current amplifier until it is determined that the conversion of the analog signal into the digital signal by the A/D converter is completed.