The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1999
Filed:
Dec. 30, 1996
Jae-Min Park, Seoul, KR;
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A tone generator includes a controller for generating a frequency control signal, an address control signal, a tone period control signal and an automatic tone period mode, a sinusoidal wave generator having a nonvolatile table of a sampled value of .pi./2 period for synthesizing two single frequencies generated by dividing temporally the sampling frequency output from the nonvolatile table and outputting a dual sinusoidal wave, a gain signal generator for generating a gain signal, a multiplier for multiplying the sinusoidal wave and the gain signal to output tone sampling data, a pulse code modulator for pulse-code-modulating the tone sampling data to output a pulse code modulation code, a serial converter for converting the pulse code modulation code into a serial bit, a tone period control signal generator having a tone period memory and a timer, for outputting a tone period control signal of the controller when the automatic tone period mode of the controller is not activated, and outputting a tone period control signal of the timer according to a counter value output from the tone period memory by the address control signal when the automatic tone period mode is activated, and a switch for switching and outputting a signal output from the serial converter according to the tone period control signal.