JPH0450957U - - Google Patents
Info
- Publication number
- JPH0450957U JPH0450957U JP9438090U JP9438090U JPH0450957U JP H0450957 U JPH0450957 U JP H0450957U JP 9438090 U JP9438090 U JP 9438090U JP 9438090 U JP9438090 U JP 9438090U JP H0450957 U JPH0450957 U JP H0450957U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor memory
- memory circuit
- power supply
- circuit
- level
- 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
- 239000004065 semiconductor Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を示す図、第２図は
第２リセツト回路の特性を示す図である。
１……ダイオードブリツジ、６……システム制
御回路、１８……留守番電話機能制御回路、２１
……第２半導体記憶回路、２９……バツクアツプ
用電源、３０……電源回路、３２……第２リセツ
ト回路、３３……スイツチ回路。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing the characteristics of the second reset circuit. 1... Diode bridge, 6... System control circuit, 18... Answering machine function control circuit, 21
... second semiconductor memory circuit, 29 ... backup power supply, 30 ... power supply circuit, 32 ... second reset circuit, 33 ... switch circuit.
Claims (1)
情報を記憶する半導体記憶回路と、停電時に前記
半導体記憶回路に記憶された情報を保持するため
前記半導体記憶回路に電源を供給するバツクアツ
プ用電源と、前記バツクアツプ用電源のレベルを
判定し、前記レベルが所定レベル以下になつたと
き、制御信号を発生するリセツト回路と、前記バ
ツクアツプ用電源と半導体記憶回路との間に配置
され、前記リセツト回路からの制御信号に基づき
前記半導体記憶回路への電源供給を遮断するスイ
ツチ回路とを具備した電話装置。 (2) 前記電話装置が商用電源供給時、留守番電
話機能を達成するようになされており、前記半導
体記憶回路に応答メツセージ及び当該留守番電話
機能を達成する情報が記憶されていることを特徴
とする請求項１記載の電話装置。[Claims for Utility Model Registration] (1) A semiconductor memory circuit that stores information regarding the functions achieved when commercial power is supplied, and a power supply to the semiconductor memory circuit to retain the information stored in the semiconductor memory circuit during a power outage. between the backup power supply and the semiconductor memory circuit; a reset circuit that determines the level of the backup power supply and generates a control signal when the level falls below a predetermined level; a switch circuit arranged to cut off power supply to the semiconductor memory circuit based on a control signal from the reset circuit. (2) The telephone device is configured to perform an answering machine function when commercial power is supplied, and the semiconductor memory circuit stores a response message and information for achieving the answering machine function. The telephone device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9438090U JPH0450957U (en) | 1990-09-06 | 1990-09-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9438090U JPH0450957U (en) | 1990-09-06 | 1990-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0450957U true JPH0450957U (en) | 1992-04-28 |
Family
ID=31832276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9438090U Pending JPH0450957U (en) | 1990-09-06 | 1990-09-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450957U (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62109148A (en) * | 1985-11-08 | 1987-05-20 | Sharp Corp | Memory back-up system |
| JPS62138943A (en) * | 1985-12-12 | 1987-06-22 | Mitsubishi Electric Corp | Storage device |
| JPS6326747A (en) * | 1986-07-21 | 1988-02-04 | Oki Electric Ind Co Ltd | Malfunction preventing device for memory incorporated device |
| JPH01185137A (en) * | 1988-01-11 | 1989-07-24 | Canon Inc | Power failure detection |
| JPH01253354A (en) * | 1988-03-31 | 1989-10-09 | Matsushita Electric Ind Co Ltd | Power unit for automatic answering telephone system and the like |
| JPH0220946A (en) * | 1988-07-08 | 1990-01-24 | Nec Corp | Telephone set |
| JPH0223760A (en) * | 1988-07-13 | 1990-01-25 | Toshiba Corp | Telephone system |
-
1990
- 1990-09-06 JP JP9438090U patent/JPH0450957U/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62109148A (en) * | 1985-11-08 | 1987-05-20 | Sharp Corp | Memory back-up system |
| JPS62138943A (en) * | 1985-12-12 | 1987-06-22 | Mitsubishi Electric Corp | Storage device |
| JPS6326747A (en) * | 1986-07-21 | 1988-02-04 | Oki Electric Ind Co Ltd | Malfunction preventing device for memory incorporated device |
| JPH01185137A (en) * | 1988-01-11 | 1989-07-24 | Canon Inc | Power failure detection |
| JPH01253354A (en) * | 1988-03-31 | 1989-10-09 | Matsushita Electric Ind Co Ltd | Power unit for automatic answering telephone system and the like |
| JPH0220946A (en) * | 1988-07-08 | 1990-01-24 | Nec Corp | Telephone set |
| JPH0223760A (en) * | 1988-07-13 | 1990-01-25 | Toshiba Corp | Telephone system |
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