Circuit board for mobile communication terminal having ultrasonic wave speaker system
OwnerKyungmin Nainventor
Life of this patent
Estimating the term…
Abstract
Disclosed is a mobile communication terminal board having an ultrasonic speaker system which can be used without any separate additional device during a viewing of a sky-wave broadcast or during a video calling and which can be free from an echo phenomenon. The mobile communication terminal board includes a baseband chip for processing audio data, an ultrasonic drive chip for receiving and modulating a signal output from the baseband chip to an ultrasonic band signal, and an ultrasonic speaker for outputting the ultrasonic signal output from the ultrasonic drive chip to an outside.
Claims13
A mobile communication terminal board comprising:
- a baseband chip for processing audio data;
- an ultrasonic drive chip for receiving and modulating a signal output from the baseband chip to an ultrasonic band signal;
- and
- an ultrasonic speaker for outputting the ultrasonic signal output from the ultrasonic drive chip to an outside.
A mobile communication terminal board comprising:
- an ultrasonic speaker for outputting a signal modulated to an ultrasonic band;
- and
- a baseband chip, integratedly provided with an ultrasonic drive chip for driving the ultrasonic speaker, for processing audio data.
Dependencies are inferred from the claim text.