Title:
【発明の名称】光信号検出回路
Document Type and Number:
Japanese Patent JP2577929
Kind Code:
B2
Abstract:
An optical signal detecting circuit is configured so that its detection sensitivity for detecting an optical signal received by a light receiving element is set by selecting desired values of fixed current sources I and I' and a desired current division ratio of independent PNP multicollector transistors Q1 and Q2 and so that its optical signal detecting hysteresis range is set by selecting a desired current ratio of I and I' or a desired current division ratio of the independent PNP multicollector transistors Q1 and Q2.
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Inventors:
OKAGAKI HIROYUKI
Application Number:
JP21602587A
Publication Date:
February 05, 1997
Filing Date:
August 28, 1987
Export Citation:
Assignee:
CLARION CO LTD
International Classes:
H01L31/10; H03F3/08; H04B10/40; H04B10/50; H04B10/60; H04B10/67; H04B10/69; (IPC1-7): H01L31/10; H04B10/04; H04B10/06; H04B10/14; H04B10/26; H04B10/28
Domestic Patent References:
| JP6175143A | ||||
| JP61198788A | ||||
| JP63104384A |
Attorney, Agent or Firm:
Takesaburo Nagata