JPS61169443U

JPS61169443U -

Info

Publication number: JPS61169443U
Application number: JP4974085U
Authority: JP
Priority date: 1985-04-03
Filing date: 1985-04-03
Publication date: 1986-10-21

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例による全体の回路
ブロツク図、第２図は表示部、第３図は電圧―周
波数変換回路、第４図は降圧回路、第５図はデー
タ写し込み用電池が存在するときのカメラ本体側
の電池の装着或いは取り外しにより割込のフロー
チヤート、第６図は巻上のサブルーチンを示すフ
ローチヤート、第７図はＢＣカウント１，２のサ
ブルーチンを示すフローチヤート及びタイマーに
よる割込のフローチヤート、第８図及び第９図は
測光スイツチのＯＮ或いは裏蓋の開閉スイツチの
ＯＮ，ＯＦＦによる割込のフローチヤート、第１
０図はカメラ本体側の電池とデータ写し込み用電
池の両方が装着されていない状態で、どちらか一
方が装着されたことによる割込のフローチヤート
である。ＢＢＡ……電源電池、ＤＢＡ……バツクアツプ
電池、ＭＣ……マイクロコンピユータ。 Fig. 1 is an overall circuit block diagram according to an embodiment of the present invention, Fig. 2 is a display section, Fig. 3 is a voltage-frequency conversion circuit, Fig. 4 is a step-down circuit, and Fig. 5 is for data imprinting. Flowchart of interruption due to attachment or removal of battery on the camera body side when a battery is present, Figure 6 is a flowchart showing the winding subroutine, Figure 7 is a flowchart showing the BC count 1, 2 subroutine. 8 and 9 are flowcharts of interruptions caused by turning on the photometry switch or turning on and off the opening/closing switch on the back cover.
Figure 0 is a flowchart of an interruption caused by the attachment of either the camera body battery or the data imprinting battery when both are not attached. BBA...power battery, DBA...backup battery, MC...microcomputer.

Claims

[Claims for Utility Model Registration] (1) A power supply battery, a backup battery, a battery, and an operation mode that is powered by both of these batteries, has a data storage section, and has a high current consumption, and a stop mode that has a low current consumption. a microcomputer having a microcomputer, a discriminating means for discriminating whether or not a power battery is attached and outputting a discriminating signal, and an external circuit operating under control from the microcomputer;
and prohibiting means for prohibiting the operation of the microcomputer that operates the external circuit when the discriminating means outputs a discrimination signal indicating that the power battery is not installed. Electronic equipment with backup batteries. (2) The microcomputer is an electronic device having a power supply battery and a backup battery according to claim 1 of the utility model registration claim, which has the discrimination means and prohibition means. (3) An electronic device having a power supply battery and a backup battery according to claim 1 or 2 of the utility model registration claim, wherein the backup battery is a battery for data backup of a camera. (4) When the above discrimination means outputs a discrimination signal indicating that the power battery is not installed, the operation of the microcomputer that operates the external circuit is stopped by putting the microcomputer in stop mode. An electronic device having a power supply battery and a backup battery according to claim 1, wherein the microcomputer does not accept interrupts from the outside.