JPH01142029U - - Google Patents
Info
- Publication number
- JPH01142029U JPH01142029U JP3699488U JP3699488U JPH01142029U JP H01142029 U JPH01142029 U JP H01142029U JP 3699488 U JP3699488 U JP 3699488U JP 3699488 U JP3699488 U JP 3699488U JP H01142029 U JPH01142029 U JP H01142029U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- memory
- power supply
- detecting
- auxiliary power
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Power Sources (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
第１図は本考案の一実施例の構成を示すブロツ
ク図、第２図は電池交換操作検出機構の一例を示
す要部拡大断面図、第３図は電池交換操作検出機
構の他の例を示す要部拡大断面図、第４図及び第
５図は従来の回路の構成を示すブロツク図である
。
１……電池、２……電圧検出回路、１２……コ
ンデンサ、２１……スイツチ、２４……フリツプ
フロツプ。
Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view of essential parts showing an example of a battery replacement operation detection mechanism, and Fig. 3 shows another example of the battery replacement operation detection mechanism. FIGS. 4 and 5 are block diagrams showing the configuration of a conventional circuit. 1...Battery, 2...Voltage detection circuit, 12...Capacitor, 21...Switch, 24...Flip-flop.
Claims (1)
源を有する電子機器において、 電池電圧を検出する電圧検出手段と、 電池交換の操作を検出するスイツチ手段と、 前記手段のいずれか一方の検出結果に応じて、
前記電池から補助電源に切り換えてメモリのバツ
クアツプを行う電源切り換え手段とを備えること
を特徴とするメモリ保護装置。[Scope of Claim for Utility Model Registration] In an electronic device having an auxiliary power source for backing up memory when replacing a battery, voltage detection means for detecting battery voltage, switch means for detecting an operation for battery replacement, and any one of the above means. Depending on the detection results of
A memory protection device comprising: power supply switching means for switching from the battery to an auxiliary power supply to back up the memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3699488U JPH01142029U (en) | 1988-03-19 | 1988-03-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3699488U JPH01142029U (en) | 1988-03-19 | 1988-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01142029U true JPH01142029U (en) | 1989-09-28 |
Family
ID=31263581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3699488U Pending JPH01142029U (en) | 1988-03-19 | 1988-03-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01142029U (en) |
-
1988
- 1988-03-19 JP JP3699488U patent/JPH01142029U/ja active Pending
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