GB2270445A - Data saving arrangement in a battery-operated mobile phone - Google Patents
Data saving arrangement in a battery-operated mobile phone Download PDFInfo
- Publication number
- GB2270445A GB2270445A GB9318274A GB9318274A GB2270445A GB 2270445 A GB2270445 A GB 2270445A GB 9318274 A GB9318274 A GB 9318274A GB 9318274 A GB9318274 A GB 9318274A GB 2270445 A GB2270445 A GB 2270445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radio telephone
- battery pack
- mcu
- battery
- write operation
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1615—Switching on; Switching off, e.g. remotely
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Battery Mounting, Suspending (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A battery (2) operated mobile phone (1) has a switch (4) which detects a movement of the phone's battery pack (2). When the battery pack (2) of the mobile phone (1) is replaced, the switch (4) causes an interrupt to the MCU (5). The interrupt notifies the MCU (5) that the power supply will be cut off for the time during which the battery pack (2) is replaced. In this case necessary data can be stored to the EEPROM memory (6). <IMAGE>
Description
A battery-orerated radio teleDhone.
The present invention relates to a battery-operated radio telephone, and in particular to such a radio telephone having a switch that detects movement of the radio telephone's battery pack.
Radio telephones powered by battery have a problem in that important data can be lost from the telephone's memory when the battery pack is for some reason removed whilst the phone is switched on.
Important data can be retained in a number of ways. One way is to add a backup power supply to the radio telephone's memory (SRAM) containing the data to be stored. Such a backup power unit can supply current to the memory in the event that the battery pack is removed from the radio telephone. The problem with using a backup power unit is that its lifetime diminishes substantially if the radio telephone is kept without a battery or the battery is empty, such as, for example, when the radio telephone is kept in storage. Since radio telephones are becoming more compact, it is difficult to fit a battery into the set, even if the battery is small in size.
Another way of maintaining important data is to store it in an EEPROM memory. The EEPROM memory retains data even if the power supply to it is cut off. The problem with using an EEPROM memory is that each memory location accommodates only a limited number of write operations.
When important data are stored at relatively short intervals, this limited amount of write capacity is quickly exhausted. Furthermore, another problem is that the write operation itself takes about 10 ms and there must be an uninterrupted power supply while it is being performed.
According to the present invention there is provided a battery-operable radio telephone adapted to receive an insertable and removable battery pack, and comprising coupling means for electrically coupling an inserted battery pack to the radio telephone for supplying power to the radio telephone, and switch means responsive to movement of the inserted battery pack for sending a control signal to control circuitry of the radio telephone prior to the battery pack being disconnected from the coupling means.
This has the advantage that the control circuitry can perform a controlled power down of the radio telephone before the battery pack is electrically disconnected from the radio telephone.
In a preferred embodiment of the invention the control circuitry comprises a microprocessor control unit (MCU).
This has the advantage that the complex operation of the radio telephone can be controlled by circuitry of small size.
Typically, the movement of the inserted battery pack is due to removal of the battery pack from the radio telephone.
Preferably the MCU is operable to perform a write operation to an EEPROM memory on receipt of the control signal by the MCU which is a convenient way of storing important data that it is important not to lose.
Furthermore, the EEPROM is unlikely to have its write capacity exhausted quickly since removal of the battery pack whilst the radio telephone is on is unlikely to occur very often.
Advantageously, SIM card contacts of the radio telephone may be deactivated in a controlled manner in accordance with ISO 7816-3 thereby avoiding damage to the SIM card data.
Further advantages may be obtained if the switch means inhibits the execution of a write operation when capacitors on a power supply busbar are unable to supply current to the radio telephone for the time necessary to perform the write operation. This further ensures that no data is lost when the power supply is suddenly removed.
The battery pack may be insertable in and removable from the radio telephone in a hinge-like fashion such that the battery pack is tilted with respect to the radio telephone and has a first end mechanically and electrically coupled to the radio telephone and a second end disposed away from the radio telephone prior to the battery pack being fully inserted in the radio telephone and wherein the second end comprises a connector pin adapted to co-operate with a contact means disposed on the radio telephone such that the connector pin is contactable with the contact means after the first end is electrically coupled to the radio telephone and the connector pin is able to break contact with the contact means before the first end is electrically uncoupled from the radio telephone.
Embodiments of the invention are now described in detail, by way of example only, and with reference to the accompanying diagrams, in which:
Figure 1 shows the mechanical block diagram of a radio
telephone in accordance with the invention,
Figure 2 shows the electrical block diagram of a radio
telephone in accordance with the invention,
Figure 3 shows a radio telephone in accordance with
the invention and the emplacement of the
switch in the radio telephone,
Figure 4 shows the operation of the switch solution
for the radio telephone in accordance with
the invention,
Figures 5a and 5b
show the operation of an alternative
switch solution for a radio telephone in
accordance with the invention,
Figure 6 shows the operation flow chart for the
battery switch
Figure 1 shows the mechanical block diagram of a radio telephone in accordance with the invention.In radio telephone 1 the purpose of switch 4 is to indicate to the
MCU when battery pack 2 of the radio telephone 1 is moved and a cutoff in the power supply to battery connector 3 can be expected.
Figure 2 shows the electrical block diagram of a radio telephone in accordance with the invention. Battery switch 4 is installed in such a way that it generates an interrupt or control signal to MCU 5 before contact with battery connector 3 is broken. Accordingly, MCU 5 can still perform a write operation, which may comprise several bytes of data, to an EEPROM memory 6. The system is nevertheless designed in such a way that capacitors on the power supply busbar are capable of maintaining the minimum voltage necessary to perform the write operation.
A second task of switch 4 is to disable a write operation when the capacitors on the power supply busbar are incapable of supplying current to the radio telephone for the time of one write operation. Thus, the data in EEPROM memory 6 is not destroyed due to a power supply cutoff during a write.
Figure 3 shows the emplacement of switch 4 in radio telephone 1 in accordance with the invention. Battery switch 4 is installed in such a way that the slightest movement of replaceable battery pack 2 causes an interrupt or control signal to be sent to MCU 5. When a data item is to be stored and switch 4 detects a movement of battery pack 2, it is advantageous that switch 4 detects the movement before the contact of battery connector 3 is broken, battery pack 2 is removed and the power source is lost. In accordance with the invention, battery switch 4 is adapted to cooperate with battery pack 2, and battery connector 3 and the locking mechanism are so adapted, such that battery pack 2 is able to move without the connection between battery pack 2 and cellular phone 1 being lost before switch 4 has detected a movement of battery pack 2.
Figure 4 shows the operation of a switch of a radio telephone 1 in accordance with the invention. When battery pack 2 is removed from radio telephone 1, switch 4 sends an interrupt to MCU 5. MCU 5 can react to this interrupt in various ways. If battery pack 2 or the power supply system of radio telephone 1 are able to supply the required power to radio telephone 1 for the time needed to carry out one write operation, MCU 5 stores the data to
EEPROM memory 6, which is used in performing the write operation. Following this write, other write operations are not permitted before the state of switch 4 has changed, i.e., battery pack 2 has been replaced in cellular phone 1. If battery pack 2 or the power supply system of cellular phone 1 are not able to supply the power required to perform one write operation, no writes to EEPROM memory 6 are permitted at all.
Figures 5a and 5b show the operation of an alternative switch for a radio telephone 1 in accordance with the invention. Battery pack 2, which folds up in hinge-like fashion at one end, is equipped with a connector pin 7 mounted at the end opposite the hinge. When battery pack 2 is opened up (Fig. 5b), the contact of connector pin 7 is broken before that of power pins 8 at the hinge end. This function does not call for a separate pin, instead, the pin used can be a pin reserved for some other function, such as, for example, the pin reserved for the current circuit of the NTC resistor. When battery pack 2 is removed from cellular phone 1, connector pin 7 sends an interrupt to MCU 5, which reacts to the interrupt in the above-described manner.The switch presented here can be earthed at both ends, thereby reducing its radio frequency radiation. This serves to cut down radiation interference.
Finally, Figure 6 shows a flow chart indicating the operation of the switch and of the MCU. For example, the contacts for a SIM card can be deactivated, as controlled by MCU, in the order of standard ISO 7816-3, in order to avoid damage of the SIM card data.
The MCU may effect switch off of the current supply to the phone when appropriate final operations have been executed before the exchange of battery.
In view of the foregoing description it will be evident to a person skilled in the art that various modifications may be made within the scope of the invention.
The scope of the present disclosure includes any novel feature or combination of features disclosed therein either explicitly or implicitly or any generalisation thereof irrespective of whether or not it relates to the claimed invention or mitigates any or all of the problems addressed by the present invention. The applicant hereby gives notice that new claims may be formulated to such features during prosecution of this application or of any such further application derived therefrom.
Claims (11)
1. A battery-operable radio telephone adapted to receive
an insertable and removable battery pack, and
comprising coupling means for electrically coupling an
inserted battery pack to the radio telephone for
supplying power to the radio telephone, and switch
means responsive to movement of the inserted battery
pack for sending a control signal to control circuitry
of the radio telephone prior to the coupling means
being disconnected from the battery pack.
2. A radio telephone according to claim 1, wherein the
control circuitry comprises a microprocessor control
unit (MCU).
3. A radio telephone, according to claim 1 or claim 2,
wherein the movement of the inserted battery pack is
due to removal of the battery pack from the radio
telephone.
4. A radio telephone according to claim 3, wherein the
MCU is operable to perform a write operation to an
EEPROM memory on receipt of the control signal by the
MCU.
5. A radio telephone according to claim 4, wherein
capacitors on a power supply busbar are capable of
maintaining a minimum voltage necessary to perform the
write operation.
6. A radio telephone according to claim 4 or claim 5,
wherein further write operations are inhibited until
the switch means indicates that a battery pack has
been inserted in the radio telephone.
7. A radio telephone according to any preceding claim
further comprising SIM card contacts and wherein the
MCU deactivates the SIM card contacts of the radio
telephone upon receipt of the control signal.
8. A radio telephone according to any of claims 1 to 4 or
5, wherein the MCU switches off the power supply to
the radio telephone when the operations on receipt of
the control signal by the MCU have been executed.
9. A radio telephone according to any one of claims 1 to
4, wherein the switch means inhibits the execution of
a write operation when capacitors on a power supply
busbar are unable to supply current to the radio
telephone for the time necessary to perform the write
operation.
10. A radio telephone according to any one of the
preceding claims, wherein the battery pack is
insertable in and removable from the radio telephone
in a hinge-like fashion such that the battery pack is
tilted with respect to the radio telephone and has a
first end mechanically and electrically coupled to the
radio telephone and a second end disposed away from
the radio telephone prior to the battery pack being
fully inserted in the radio telephone and wherein the
second end comprises a connector pin adapted to co- operate with a contact means disposed on the radio
telephone such that the connector pin is contactable
with the contact means after the first end is
electrically coupled to the radio telephone and the
connector pin is able to break contact with the
contact means before the first end is electrically
uncoupled from the radio telephone.
11. A radio telephone according to claim 10, wherein the
connector pin is used for some other function such-as for the current circuit of an NTC resistor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI923979A FI923979A0 (en) | 1992-09-04 | 1992-09-04 | EN MED BATTERY FUNGERANDE MOBILTELEFON. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9318274D0 GB9318274D0 (en) | 1993-10-20 |
| GB2270445A true GB2270445A (en) | 1994-03-09 |
| GB2270445B GB2270445B (en) | 1996-06-26 |
Family
ID=8535820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9318274A Expired - Fee Related GB2270445B (en) | 1992-09-04 | 1993-09-03 | A battery-operated radio telephone |
Country Status (2)
| Country | Link |
|---|---|
| FI (1) | FI923979A0 (en) |
| GB (1) | GB2270445B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997013385A1 (en) * | 1995-10-04 | 1997-04-10 | Nokia Mobile Phones Limited | A method for maintaining a connection in a mobile communication system during a battery change in a mobile communication device |
| DE19628366C1 (en) * | 1996-07-13 | 1997-11-20 | Honeywell Ag | Voltage monitoring circuit for monitoring connection of battery to electronic equipment contg. microcontroller supplied from voltage supply via buffer capacitor |
| EP0849660A1 (en) * | 1996-12-19 | 1998-06-24 | Koninklijke Philips Electronics N.V. | Portable electronic apparatus with a device for detecting a variation in the supply voltage |
| EP1017148A1 (en) | 1998-12-29 | 2000-07-05 | Koninklijke Philips Electronics N.V. | Electrical device including a battery and method for detecting the disconnection of a battery |
| US6178523B1 (en) | 1998-06-12 | 2001-01-23 | Philips Consumer Communications Lp | Battery-operated device with power failure recovery |
| GB2370730A (en) * | 2000-10-04 | 2002-07-03 | Nec Corp | Portable telephone apparatus which protects the stored contents of an internal memory when a power supply is disconnected instantaneously |
| FR2923096A1 (en) * | 2007-10-30 | 2009-05-01 | Yves Faisandier | Rechargeable cell housing and autonomous electronic system associating device for e.g. autonomous electrocardiogram recorder, has trap taking closed-starting position to drive change of switch state to control exit point of consumption mode |
| CN102682830A (en) * | 2011-03-11 | 2012-09-19 | 索尼爱立信移动通讯有限公司 | Mobile terminal and write-protection method for memory card in mobile terminal |
| US20130009592A1 (en) * | 2011-07-08 | 2013-01-10 | Microsoft Corporation | Autonomous device battery exchange |
| KR20130026999A (en) * | 2011-09-06 | 2013-03-14 | 삼성전자주식회사 | Mobile terminal and file system management method thereof |
| EP2796947A1 (en) * | 2013-04-24 | 2014-10-29 | ETA SA Manufacture Horlogère Suisse | System for detecting the closure of the case of a portable object |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991002424A1 (en) * | 1989-08-03 | 1991-02-21 | Motorola, Inc. | Portable telephone with power source/mode change during calls |
| GB2240010A (en) * | 1989-12-28 | 1991-07-17 | Matsushita Electric Ind Co Ltd | Saving data during cellular telephone battery replacement |
-
1992
- 1992-09-04 FI FI923979A patent/FI923979A0/en not_active Application Discontinuation
-
1993
- 1993-09-03 GB GB9318274A patent/GB2270445B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991002424A1 (en) * | 1989-08-03 | 1991-02-21 | Motorola, Inc. | Portable telephone with power source/mode change during calls |
| GB2240010A (en) * | 1989-12-28 | 1991-07-17 | Matsushita Electric Ind Co Ltd | Saving data during cellular telephone battery replacement |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997013385A1 (en) * | 1995-10-04 | 1997-04-10 | Nokia Mobile Phones Limited | A method for maintaining a connection in a mobile communication system during a battery change in a mobile communication device |
| DE19628366C1 (en) * | 1996-07-13 | 1997-11-20 | Honeywell Ag | Voltage monitoring circuit for monitoring connection of battery to electronic equipment contg. microcontroller supplied from voltage supply via buffer capacitor |
| EP0849660A1 (en) * | 1996-12-19 | 1998-06-24 | Koninklijke Philips Electronics N.V. | Portable electronic apparatus with a device for detecting a variation in the supply voltage |
| US6178523B1 (en) | 1998-06-12 | 2001-01-23 | Philips Consumer Communications Lp | Battery-operated device with power failure recovery |
| EP1017148A1 (en) | 1998-12-29 | 2000-07-05 | Koninklijke Philips Electronics N.V. | Electrical device including a battery and method for detecting the disconnection of a battery |
| US6265849B1 (en) | 1998-12-29 | 2001-07-24 | U.S. Philips Corporation | Electrical apparatus comprising a battery and method of detecting the disconnection of a battery |
| GB2370730A (en) * | 2000-10-04 | 2002-07-03 | Nec Corp | Portable telephone apparatus which protects the stored contents of an internal memory when a power supply is disconnected instantaneously |
| GB2370730B (en) * | 2000-10-04 | 2005-03-30 | Nec Corp | Portable telephone apparatus |
| US7085594B2 (en) | 2000-10-04 | 2006-08-01 | Nec Corporation | Portable telephone apparatus |
| FR2923096A1 (en) * | 2007-10-30 | 2009-05-01 | Yves Faisandier | Rechargeable cell housing and autonomous electronic system associating device for e.g. autonomous electrocardiogram recorder, has trap taking closed-starting position to drive change of switch state to control exit point of consumption mode |
| CN102682830A (en) * | 2011-03-11 | 2012-09-19 | 索尼爱立信移动通讯有限公司 | Mobile terminal and write-protection method for memory card in mobile terminal |
| WO2012123792A1 (en) * | 2011-03-11 | 2012-09-20 | Sony Ericsson Mobile Communications Ab | Mobile terminal and method of write protection for memory card in the mobile terminal |
| US8731625B2 (en) | 2011-03-11 | 2014-05-20 | Sony Corporation | Mobile terminal and method of write protection for memory card in the mobile terminal |
| CN102682830B (en) * | 2011-03-11 | 2015-03-04 | 索尼爱立信移动通讯有限公司 | Mobile terminal and write-protection method for memory card in mobile terminal |
| US20130009592A1 (en) * | 2011-07-08 | 2013-01-10 | Microsoft Corporation | Autonomous device battery exchange |
| US20140223232A1 (en) * | 2011-09-06 | 2014-08-07 | Samsung Electronics Co., Ltd. | Mobile terminal and method for managing the file system thereof |
| EP2765710A2 (en) * | 2011-09-06 | 2014-08-13 | Samsung Electronics Co., Ltd. | Mobile terminal and method for managing the file system thereof |
| KR20130026999A (en) * | 2011-09-06 | 2013-03-14 | 삼성전자주식회사 | Mobile terminal and file system management method thereof |
| EP2765710A4 (en) * | 2011-09-06 | 2015-04-22 | Samsung Electronics Co Ltd | Mobile terminal and method for managing the file system thereof |
| US9342428B2 (en) | 2011-09-06 | 2016-05-17 | Samsung Electronics Co., Ltd. | Mobile terminal and method for managing the file system thereof |
| KR101941637B1 (en) * | 2011-09-06 | 2019-01-24 | 삼성전자 주식회사 | Mobile terminal and file system management method thereof |
| EP2796947A1 (en) * | 2013-04-24 | 2014-10-29 | ETA SA Manufacture Horlogère Suisse | System for detecting the closure of the case of a portable object |
| WO2014173760A2 (en) * | 2013-04-24 | 2014-10-30 | Eta Sa Manufacture Horlogère Suisse | System for detecting the closing of a box of a portable object |
| WO2014173760A3 (en) * | 2013-04-24 | 2014-12-18 | Eta Sa Manufacture Horlogère Suisse | System for detecting the closing of a box of a portable object |
| US9897978B2 (en) | 2013-04-24 | 2018-02-20 | Eta Sa Manufacture Horlogère Suisse | Case closure detection system for a portable object |
Also Published As
| Publication number | Publication date |
|---|---|
| FI923979A0 (en) | 1992-09-04 |
| GB9318274D0 (en) | 1993-10-20 |
| GB2270445B (en) | 1996-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |