|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||372/031 ; 372/029 ; 372/038|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 35 인용 특허 : 2|
A laser diode 11 performs switching operation with a high speed in response to a digital-modulated electric signal inputted in differential input terminals 10a and 10b. At this time, a voltage detecting portion 14 detects a terminal voltage of the laser diode 11. A peak detecting portion 15 detects a peak value of output of the voltage detecting portion 14. A current control portion 16 controls a drive current of the laser diode 11 in accordance with an output of the peak detecting portion 15. The current control portion 16 includes a reference voltage g...
[ What is claimed is:] [1.] A light emitting device drive circuit for stably driving a light emitting device which performs switching operations in response to a digital-modulated electric signal, said light emitting device drive circuit comprising:a voltage detecting portion operable to detect a terminal voltage of the light emitting device;a peak detecting portion operable to detect a peak value of an output of said voltage detecting portion;a reference voltage generating portion comprising a plurality of reference voltage generating sources which gene...