JPH02119730U - - Google Patents

Info

Publication number
JPH02119730U
JPH02119730U JP2663489U JP2663489U JPH02119730U JP H02119730 U JPH02119730 U JP H02119730U JP 2663489 U JP2663489 U JP 2663489U JP 2663489 U JP2663489 U JP 2663489U JP H02119730 U JPH02119730 U JP H02119730U
Authority
JP
Japan
Prior art keywords
ram
data
identification codes
turned
key switch
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
Application number
JP2663489U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2663489U priority Critical patent/JPH02119730U/ja
Publication of JPH02119730U publication Critical patent/JPH02119730U/ja
Pending legal-status Critical Current

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  • Power Sources (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案のクレーム対応図、第２図は本
考案の一実施例を示す構成図、第３図及び第４図
は同上のフローチヤート、第５図はバツクアツプ
装置の一例を示す回路図である。 １１……ＣＰＵ、１２……ＲＡＭ、１３……エ
ンジンキースイツチ、１４……ＣＰＵ側電源、１
５……バツクアツプ電源。 Fig. 1 is a diagram corresponding to claims of the present invention, Fig. 2 is a block diagram showing an embodiment of the invention, Figs. 3 and 4 are flowcharts of the same, and Fig. 5 is a circuit showing an example of a backup device. It is a diagram. 11...CPU, 12...RAM, 13...Engine key switch, 14...CPU side power supply, 1
5...Backup power supply.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複数のプログラムを記憶するプログラム記憶手
段を備えると共に、データ書込み手段により、Ｒ
ＡＭに所定データを書込み、エンジンキースイツ
チのオフ中にＲＡＭのデータをバツクアツプ電源
により記憶保持させるようにしたＲＡＭデータの
バツクアツプ装置において、前記プログラム記憶
手段の各プログラムに識別符号を夫々付すると共
に、エンジンキースイツチのオフ時に前記各識別
符号を前記ＲＡＭに記憶させる符号書込み手段と
、エンジンキースイツチオン時にＲＡＭに記憶さ
れている識別符号を読出す読出手段と、読出され
た識別符号とプログラム記憶手段からの識別符号
とを比較する比較手段と、それらの識別符号が異
なるときに前記ＲＡＭの全てのデータをクリアす
るクリア手段と、を備えたことを特徴とするＲＡ
Ｍデータのバツクアツプ装置。 It is equipped with a program storage means for storing a plurality of programs, and also has a data writing means.
In a RAM data backup device that writes predetermined data into an AM and stores and holds the data in the RAM using a backup power source while the engine key switch is turned off, each program in the program storage means is provided with an identification code, and code writing means for storing each of the identification codes in the RAM when the engine key switch is turned off; reading means for reading out the identification codes stored in the RAM when the engine key switch is turned on; and read-out identification codes and program storage means. and a clearing means for clearing all data in the RAM when the identification codes are different.
M data backup device.
JP2663489U 1989-03-10 1989-03-10 Pending JPH02119730U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2663489U JPH02119730U (en) 1989-03-10 1989-03-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2663489U JPH02119730U (en) 1989-03-10 1989-03-10

Publications (1)

Publication Number Publication Date
JPH02119730U true JPH02119730U (en) 1990-09-27

Family

ID=31248441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2663489U Pending JPH02119730U (en) 1989-03-10 1989-03-10

Country Status (1)

Country Link
JP (1) JPH02119730U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103556A (en) * 1980-12-19 1982-06-28 Fujitsu Ltd Input data processor
JPS6349861A (en) * 1986-08-19 1988-03-02 Fujitsu Ltd Method for processing battery fault

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103556A (en) * 1980-12-19 1982-06-28 Fujitsu Ltd Input data processor
JPS6349861A (en) * 1986-08-19 1988-03-02 Fujitsu Ltd Method for processing battery fault

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