JPS6123746U - Selective call receiver display circuit - Google Patents
Selective call receiver display circuitInfo
- Publication number
- JPS6123746U JPS6123746U JP1984108792U JP10879284U JPS6123746U JP S6123746 U JPS6123746 U JP S6123746U JP 1984108792 U JP1984108792 U JP 1984108792U JP 10879284 U JP10879284 U JP 10879284U JP S6123746 U JPS6123746 U JP S6123746U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- circuit
- emitting element
- drive
- drive signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Audible And Visible Signals (AREA)
- Rectifiers (AREA)
- Circuits Of Receivers In General (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は一般的な選択呼出受信機の概略構成を示す回路
ブロック図、第２図は従来における表示回路の回路構成
図、第３図は本考案の一実施例における表示回路の回路
構成図、第４図は駆動信号の信号波形図である。
９・・・・・・発光ダイオード、２０・・・・・・ダイ
オード、３０・・・・・・増幅回路、４０・・・・・・
コンデンサ、ＶＣＣ・・・・・・電源電圧。FIG. 1 is a circuit block diagram showing the general configuration of a general selective call receiver, FIG. 2 is a circuit configuration diagram of a conventional display circuit, and FIG. 3 is a circuit configuration diagram of a display circuit according to an embodiment of the present invention. , FIG. 4 is a signal waveform diagram of the drive signal. 9... Light emitting diode, 20... Diode, 30... Amplifying circuit, 40...
Capacitor, VCC...Power supply voltage.
Claims (1)
呼出時に駆動回路よりの駆動信号に基づき上記発光素子
を間欠的に通電駆動することにより呼出し表示する選択
呼出受信機の表示回路において、前記電源電圧の出力端
と接地端との間に方向性素子および前記発光素子から成
る直列回路を順方向に接続するとともに、前記方向性素
子および前記発光素子の接続点と前記駆動回路との間に
コンデンサ回路を接続し、前記駆動回路から発生される
駆動信号のオフ期間に前記コンデンサ回路に前記電源電
圧を充電し；７駆動信号のオン期間にこの駆動信号電圧
と上記コンデンサの充電電圧との和に相当する電圧を前
記発光素子に印加して発光駆動するようにしたことを特
徴と丈る選択呼出受信機の表示回路。It has a light emitting element with a forward voltage drop higher than the power supply voltage,
In a display circuit of a selective call receiver that displays a call by intermittently energizing the light emitting element based on a drive signal from a drive circuit at the time of a call, a directional element is provided between the output terminal of the power supply voltage and the ground terminal. and a series circuit consisting of the light emitting elements is connected in the forward direction, and a capacitor circuit is connected between the connection point of the directional element and the light emitting element and the drive circuit, and a drive signal generated from the drive circuit is connected. Charge the capacitor circuit with the power supply voltage during the off period of 7; apply a voltage corresponding to the sum of this drive signal voltage and the charging voltage of the capacitor to the light emitting element during the on period of the 7 drive signal to drive the light emitting element. It features a selective call receiver display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984108792U JPS6123746U (en) | 1984-07-18 | 1984-07-18 | Selective call receiver display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984108792U JPS6123746U (en) | 1984-07-18 | 1984-07-18 | Selective call receiver display circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6123746U true JPS6123746U (en) | 1986-02-12 |
Family
ID=30667965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984108792U Pending JPS6123746U (en) | 1984-07-18 | 1984-07-18 | Selective call receiver display circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123746U (en) |
-
1984
- 1984-07-18 JP JP1984108792U patent/JPS6123746U/en active Pending
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