WO2006067833A1 - カードデバイス - Google Patents
カードデバイス Download PDFInfo
- Publication number
- WO2006067833A1 WO2006067833A1 PCT/JP2004/019058 JP2004019058W WO2006067833A1 WO 2006067833 A1 WO2006067833 A1 WO 2006067833A1 JP 2004019058 W JP2004019058 W JP 2004019058W WO 2006067833 A1 WO2006067833 A1 WO 2006067833A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- internal
- state
- voltage
- regulator
- internal circuit
- 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.)
- Ceased
Links
Classifications
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3275—Power saving in memory, e.g. RAM, cache
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
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- 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
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
-
- 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
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Definitions
- the present invention relates to a technique effective when applied to a card device such as a memory card, an IC card, or a multi-function card having a multi-function represented by an IC card function and a memory card function.
- Patent Documents 1 and 2 describe IC cards and memory cards that support dual voltage as an external power source. In these, when either 3.3V or 5V is supplied from the outside, if it is 5V, it will be stepped down to 3.3V by the regulator, and if 3.3V, it will be supplied to the internal circuit as it is Is done.
- Patent Document 1 Japanese Patent Laid-Open No. 6-333103
- Patent Document 2 JP-A-9-231339
- the present inventor has studied a reduction in power consumption of a card device.
- the card controller's power controller is not processing commands from the host, the card controller's microcomputer can be put to sleep to reduce power consumption in standby mode (low power consumption mode).
- the microcomputer is in the sleep state S. Since the regulator inside the card controller is constantly operating, it consumes that much power. Since the power consumption of the series regulator occupies most of the power consumption in the standby state, the present inventors have found that the continuous operation of the series regulator hinders the reduction of power consumption. It was.
- One typical object of the present invention is to reduce the power consumption of a card device in a low power consumption state.
- the card device has a regulator, a first internal circuit, and a second internal circuit, and the regulator reduces the internal voltage generated by reducing the external voltage when the external voltage is a high voltage.
- the external voltage is low, the external voltage is supplied to the second internal circuit as it is and supplied to the first internal circuit.
- a transition is made to the low power consumption state.
- the card device shifts to the low power consumption state, the card device stops the operation of the regulator and suppresses the supply of the internal voltage to the second internal circuit.
- the first internal circuit when returning from the low power consumption state to the operation state, resumes the operation of the regulator to the second internal circuit. Allows supply of internal voltage. At least in this range, the first internal circuit only needs to operate, so this consumes very little power. In addition, since the first internal circuit is required to have a withstand voltage with respect to the high external voltage, the logic scale is normally expected to be reduced. The power consumption of the circuit is low.
- the regulator includes a voltage detection circuit for determining whether or not an external voltage is a high voltage, and a step for reducing the external voltage.
- a reference voltage generation circuit that generates a reference voltage to be stopped, and the operation stop of the regulator when transitioning to the low power consumption state is an operation stop of the voltage detection circuit and the reference voltage generation circuit.
- the second internal circuit has a microphone computer, and the transition to the low power consumption state is performed by the microcomputer.
- the transition to the sleep state is a trigger.
- the first internal circuit operates the regulator in response to a command input, and restarts the supply of the internal voltage to the second internal circuit.
- the microcomputer performs a power-on reset process by detecting the supply of operating power in the sleep state.
- the first internal circuit has a save memory area, and the microcomputer saves internal information necessary for returning to the internal state to the save memory area when the microcomputer transits to the sleep state.
- the microcomputer restores necessary internal information held in the save storage area in a power-on reset process. The time required for the transition from the sleep state to the operation state can be shortened.
- the external voltage supplied from the outside is a high voltage
- the external voltage is stepped down by a regulator to generate an internal voltage and supply it to the internal circuit.
- the external voltage is supplied to the internal circuit as an internal voltage as it is, and transitions to a low power consumption state when no command is input for a certain period.
- this card device transitions from the operating state to the low power consumption state, it stops the regulator operation, stops the power supply to a part of the internal circuit, and supplies the external voltage to the other part of the internal circuit. Is directly supplied as an internal voltage.
- a microcomputer that is put into a sleep state in a part of an internal circuit in which power supply is stopped when transitioning from an operation state to a low power consumption state.
- the other part of the internal circuit has a save storage area, and the microcomputer saves internal information necessary for returning to the internal state to the save storage area when the microcomputer transits to the sleep state.
- the microcomputer restores necessary internal information held in the save storage area in the power-on reset process.
- FIG. 1 is a block diagram of a memory card as an example of a card device.
- FIG. 2 is a circuit diagram illustrating the configuration of a regulator.
- FIG. 3 is an operation timing chart showing the transition from the active state to the standby state of the memory card and the transition from the standby state to the active state.
- FIG. 4 is a flowchart showing a transition of the memory card from the active state to the standby state and from the standby state to the active state.
- FIG. 5 is an operation explanatory diagram of the memory card according to the flowchart of FIG. 4.
- FIG. 1 shows a memory card as an example of a card device.
- the memory card (MCRD) 1 shown in FIG. 1 is composed of a non-volatile memory for storing data from the host (HST) 2 such as a flash memory (FLSH) 3 and a controller (CTRL) 4.
- the flash memory 3 has a large number of non-volatile memory transistors that store information according to a difference in threshold voltage.
- the flash memory 3 can be programmed to increase the threshold voltage by selectively injecting electrons into the charge storage region of the non-volatile memory transistor. Then, it is possible to electrically perform erasure that lowers the threshold voltage by selectively moving electrons from the charge storage region in the emission direction.
- the controller 4 performs interface control with the host 2, hard disk compatible file memory control for the flash memory 3, and operation mode control of the memory card 1.
- the controller 4 includes a regulator (RGL) 5, a starting circuit (STR) 6, and a logic unit (LOG) 7.
- RNL regulator
- STR starting circuit
- LOG logic unit
- the regulator 5 may be a switching regulator or a series regulator. Since the switching regulator has the capacity to have a capacitive component and a reactance component, the circuit scale becomes relatively large, but the voltage generation efficiency is relatively high. On the other hand, the series regulator consists of only semiconductor elements, so the circuit scale is relatively small, but the voltage generation efficiency is relatively low. Especially in series regulators, the internal leakage current is relatively large. Therefore, when the output power consumption is small, such as during standby operation, the internal leakage current is dominant in the current consumed by the regulator.
- the interface control and mode control are performed by the activation circuit 6 and the logic unit 7, and the hard disk compatible file memory control for the flash memory 2 is performed by the logic unit 7.
- the mouthpiece unit 7 includes a microcomputer (MCU) 8 that controls the entire controller 4 and a logic circuit (not shown).
- the start circuit 6 has a save register (REG) 9, a command decoder (CDEC) 10, and a logic circuit not shown.
- Start circuit 6 is host 2 Input clock CLK and command CMD to input / output data DAT to / from host 2.
- the activation circuit 6 detects the presence or absence of a command supplied from the host 2 by the command decoder 10.
- the startup circuit 6 passes a command to the logic unit 7 at a predetermined timing according to the operation mode of the memory card 1, outputs a clock CLK to the logic unit 7, and transfers data to and from the logic unit 7. .
- the regulator 5 supplies an internal voltage of 1.8V generated by stepping down the external voltage VCC when the external voltage VCC is a high voltage (eg, 3.3V) to the logic unit 7, and the external voltage VCC is low.
- the voltage is a voltage (eg, 1.8 V)
- the external voltage is supplied as it is to the logic unit 7 as an internal voltage.
- the starting circuit 6 is supplied with an external voltage VCC as an operating power source. Therefore, the starting circuit 6 is constituted by a transistor having a withstand voltage of 3.3V, and the gate portion 7 is different from that of a transistor having a withstand voltage of 1.8V.
- the logic unit 7 processes a command from the host 2. When command processing is complete, it waits for a new command. When the command decoder 10 detects that no command is input for a certain period of time, the command decoder 10 instructs the microcomputer 8 to enter the sleep mode. As a result, the logic unit 7 together with the microcomputer 8 performs processing for transition to the sleep mode. As one of the processes for transitioning to the sleep mode, a save operation for saving the internal state of the microcomputer 8 or the other internal state of the logic unit to the register 9 is performed. The saved internal state is used when returning from the sleep state to the operating state (active state). When the processing for transition to the sleep mode is completed, the logic unit 7 issues a standby request to the start circuit 6 with the signal STBREQ.
- the activation circuit 6 asserts the standby signal CSTB to the regulator 5 and the logic unit 7.
- the regulator 5 stops its operation and suppresses the supply of the internal voltage to the logic unit 7 so that the standby state of the memory card 1 is achieved.
- the operating power supply of the flash memory 3 is 3.3V.
- the external voltage VCC is 3.3V
- the voltage is boosted by the built-in charge pump circuit when it is 1.8V.
- the microcomputer 8 enters the sleep state, it is confirmed that the flash memory 3 is in the standby state. Flash memory 3 standby state In this state, the operation of the built-in charge pump circuit is stopped or the charge pump operating frequency is lowered. In any case, low power consumption is considered in the flash memory 3 as well.
- the start-up circuit 6 is still operable in the standby state, and when the supply of the command CMD or the supply of the command CMD synchronized with the clock CLK is detected, the standby signal CSTB to the regulator 5 and the logic unit 7 To negate. As a result, the regulator 5 is operated, and the supply of the internal voltage to the logic unit 7 is resumed.
- Microcomputer 8 detects the supply of the internal voltage and starts the power-on reset process. In the power-on reset process of the microcomputer 8, if significant saved data is stored in the register 9, the saved data is returned to the microcomputer 8 or the logic unit 7 as internal state data.
- the memory card 1 becomes active. In the active state, the startup circuit 6 supplies the command supplied immediately before the transition to the active state to the logic unit 7 so that the command processing by the logic unit 7 can be resumed.
- FIG. 2 shows the configuration of a series regulator as an example of the configuration of the regulator 5.
- the regulator 5 includes a PNP transistor 20, an operational amplifier 21, a reference voltage generation circuit (VRFG) 22, a selector (SELa) 23, a selector (SELb) 24, and a voltage detection circuit (VDTC) 25.
- VRFG reference voltage generation circuit
- SELa selector
- VDTC voltage detection circuit
- the voltage detection circuit 25 determines whether the external voltage VCC is a high voltage force such as 3.3V or a low voltage such as 1.8V, and outputs a determination signal DCS.
- An external voltage VCC is supplied to the emitter of the PNP transistor 20, and an internal voltage Vout is output from the collector.
- the collector of the PNP transistor 20 is connected to the inverting input terminal (one) of the operational amplifier 21, and the reference voltage Vref is applied to its non-inverting input terminal (+).
- the reference voltage Vref is generated by the reference voltage generation circuit 22.
- the reference voltage generation circuit 22 is generated based on the threshold voltage difference between the p-channel MOS transistor and the n-channel MOS transistor.
- the reference voltage Vref is set to 1.8 V, for example.
- the selector 23 selects and outputs the output of the operational amplifier 21 or the circuit ground voltage GND (or common potential) according to the judgment signal DCS.
- the ground potential or common potential of this circuit is the memory card and host This is the potential connected to the supply voltage ground (Supply voltage ground).
- the judgment signal DCS means high voltage input
- the judgment signal DCS means low voltage
- select the ground voltage GND By connecting the output of the operational amplifier 21 to the base of the PNP transistor 20 via the selector 24, the conductance of the PNP transistor 20 is controlled by negative feedback, and the voltage is stepped down to the external voltage VCC.
- the internal voltage Vout is formed.
- the step-down operation by the PNP transistor 20 is not performed, and the external voltage VCC of 1.8V is output as it is as the internal voltage Vout. Is done.
- the selector 24 outputs the output of the selector 23 or the external voltage VCC according to the standby signal CSTB.
- the selector 24 selects the output of the preceding selector 23, and the step-down operation is controlled according to the detection signal DCS as described above.
- the selector 24 selects the external power supply VCC, which cuts off the PNP transistor 20 and suppresses the supply of the internal voltage Vout to the logic section 7. Is done. As a result, the power supply to the logic unit 7 is cut off and all operations are stopped. Further, the voltage detection circuit 25 and the reference voltage generation circuit 22 are instructed in the standby mode by the assertion of the standby signal CSTB, and stop their operations. As a result, the operation of the regulator 5 is also stopped, and there is no power consumption by the regulator 5 in the standby state.
- FIG. 3 shows operation timings indicating the transition from the active state to the standby state and the transition from the standby state to the active state of the memory card.
- the logic unit 7 processes a command from the host 2. When the command processing is completed (tO), it waits for a new command input. When the microcomputer 8 detects that the command processing has been completed by the microcomputer 8 and the command decoder 10 has not input a command for a certain period of time, the logic unit 7 instructs the microcomputer 8 to enter the sleep mode by a signal SLP (tl). As a result, the logic unit 7 together with the microphone computer 8 performs processing for transition to the sleep mode. As one of the processes for transitioning to the sleep mode, a saving operation for saving the internal state of the microcomputer 8 or the other internal state of the logic unit to the register 9 is performed. Do.
- the logic unit 7 issues a standby request to the startup circuit 6 with the signal STBREQ (t2).
- the activation circuit 6 asserts the standby signal CSTB to the regulator 5 and the logic unit 7 (t3).
- the regulator 5 stops its operation and suppresses the supply of the internal voltage to the logic unit 7 so that the standby state of the memory card 1 is achieved.
- the start-up circuit 6 is still operable in the standby state, and when the supply of the command CMD synchronized with the clock CLK is detected, the standby signal CSTB to the regulator 5 and the logic unit 7 is negated (t4).
- the regulator 5 is operated, and the supply of the internal voltage to the logic unit 7 is resumed.
- the microcomputer 8 detects the supply of the internal voltage and starts the power-on reset process. In the power-on reset process of the microcomputer 8, if significant saved data is stored in the register 9, the saved data is returned to the microphone computer 8 or the logic unit 7 as internal state data.
- the memory card 1 becomes active and the signal STBREQ is negated (t5).
- the startup circuit 6 supplies the command supplied immediately before the transition to the active state to the logic unit 7 so that the command processing by the logic unit 7 can be resumed.
- FIG. 4 shows a flowchart showing the transition from the active state to the standby state of the memory card and the transition from the standby state to the active state.
- Figure 5 shows the operation of the memory card according to the flow chart of Figure 4.
- the logic unit 7 When a command is input from the host 2 (CMD-IN), the logic unit 7 starts the command processing (CMD_PRC). Waiting for the completion of the command processing (CMD-FNS), when the command decoder 10 detects that there is no command input for a certain period of time, the logic unit 7 instructs the microphone computer 8 to enter the sleep mode. As a result, the logic unit 7 together with the microcomputer 8 performs processing for transition to the sleep mode. When the process for transition to the sleep mode is completed, the logic unit 7 issues a standby request to the start circuit 6 with the signal STBREQ (STR-REQ). As a result, the activation circuit 6 asserts the standby signal CSTB to the regulator 5 and the logic unit 7 (STB_AST).
- the operation of the regulator 5 is stopped (REG-STOP), and the logic unit 7 is counteracted.
- the internal voltage supply is suppressed and the operation is stopped (LOG—STOP), and the memory card 1 standby state is achieved.
- the start-up circuit 6 is still operable in the standby state, and when the supply of the command CMD synchronized with the clock CLK is detected (CMD-DTC), the standby signal CSTB to the regulator 5 and the logic unit 7 is negated (STB_NGT). .
- the startup circuit 6 may send a response to the command CMD to the host before the startup of the regulator 5 and the logic unit 7 is completed.
- the regulator 5 is operated (REG-STR), the operation of the logic unit 7 is started (LOG-STR), and command processing (CMD-PRC) is enabled.
- the startup circuit 6 has a register 9 as a save storage area, and the microcomputer 8 stores internal information necessary for returning to the internal state when the microcomputer 8 transits to the sleep state. Therefore, when the standby state is released, the microcomputer 8 can restore the internal state immediately before the standby using the internal information held by the register 9 in the part-on reset process. Therefore, it is possible to shorten the time required for the transition from the sleep state to the operation state.
- the configuration of the regulator is not limited to that shown in FIG. 2, and can be changed as appropriate.
- External voltage is not limited to that shown in FIG. 2, and can be changed as appropriate.
- the step-down voltage is not limited to 1.8V and can be changed as appropriate.
- the memory card 1 detects that there is no command input from the outside for a certain period of time, and instructs the microcomputer 8 to enter the sleep mode.
- the memory card 1 performs logic according to the command that instructs the sleep mode from the outside.
- the unit 7 may instruct the microcomputer 8 to enter the sleep mode and may issue a standby request to the start circuit 6 with the signal STBREQ.
- the present invention can also be applied to a flash memory that is not only applicable to a memory card controller.
- the controller detects that there is no command from the host for a certain period and transitions to the low power consumption state.However, the flash memory detects that there is no controller power access for a certain period and transitions to the low power consumption state. If the regulator inside the flash memory stops the operation of the charge pump, etc.
- the present invention is not limited to a memory card such as a flash memory card, but an IC card equipped with an IC card microphone computer, a microcomputer for the IC card, a controller for the memory card, and a non-volatile memory. Can be widely applied to function cards.
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Sources (AREA)
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- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004800446765A CN101088099B (zh) | 2004-12-21 | 2004-12-21 | 卡设备 |
| PCT/JP2004/019058 WO2006067833A1 (ja) | 2004-12-21 | 2004-12-21 | カードデバイス |
| JP2006548632A JP4674868B2 (ja) | 2004-12-21 | 2004-12-21 | カードデバイス |
| US10/561,521 US7286435B2 (en) | 2004-12-21 | 2004-12-21 | Memory card device having low consumed power in the consumed power state |
| TW094145271A TWI402852B (zh) | 2004-12-21 | 2005-12-20 | 卡片裝置 |
| US11/856,204 US20080010478A1 (en) | 2004-12-21 | 2007-09-17 | Card device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/019058 WO2006067833A1 (ja) | 2004-12-21 | 2004-12-21 | カードデバイス |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/856,204 Continuation US20080010478A1 (en) | 2004-12-21 | 2007-09-17 | Card device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006067833A1 true WO2006067833A1 (ja) | 2006-06-29 |
Family
ID=36601446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/019058 Ceased WO2006067833A1 (ja) | 2004-12-21 | 2004-12-21 | カードデバイス |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US7286435B2 (ja) |
| JP (1) | JP4674868B2 (ja) |
| CN (1) | CN101088099B (ja) |
| TW (1) | TWI402852B (ja) |
| WO (1) | WO2006067833A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070174641A1 (en) * | 2006-01-25 | 2007-07-26 | Cornwell Michael J | Adjusting power supplies for data storage devices |
| US7702935B2 (en) * | 2006-01-25 | 2010-04-20 | Apple Inc. | Reporting flash memory operating voltages |
| US7861122B2 (en) * | 2006-01-27 | 2010-12-28 | Apple Inc. | Monitoring health of non-volatile memory |
| TWI317866B (en) * | 2006-05-18 | 2009-12-01 | Qisda Corp | Electronic device with standby function, standby power supply system and method thereof |
| US20080288712A1 (en) | 2007-04-25 | 2008-11-20 | Cornwell Michael J | Accessing metadata with an external host |
| US7913032B1 (en) | 2007-04-25 | 2011-03-22 | Apple Inc. | Initiating memory wear leveling |
| US7895457B2 (en) * | 2007-08-20 | 2011-02-22 | Supertalent Electronics, Inc. | Memory card with power saving |
| US8161304B2 (en) * | 2009-01-20 | 2012-04-17 | Microsoft Corporation | Power management for large memory subsystems |
| KR101663228B1 (ko) | 2010-09-30 | 2016-10-06 | 삼성전자주식회사 | 전원 관리 방법 및 장치 |
| US20130132740A1 (en) * | 2011-11-23 | 2013-05-23 | O2Micro, Inc. | Power Control for Memory Devices |
| US20130151755A1 (en) * | 2011-12-12 | 2013-06-13 | Reuven Elhamias | Non-Volatile Storage Systems with Go To Sleep Adaption |
| KR20140122567A (ko) * | 2013-04-10 | 2014-10-20 | 에스케이하이닉스 주식회사 | 파워 온 리셋 회로를 포함하는 반도체 장치 |
| US9704593B2 (en) * | 2014-10-30 | 2017-07-11 | Kabushiki Kaisha Toshiba | Data storage device including nonvolatile memory in which on/off state of power source voltage is controlled |
| US11645425B2 (en) * | 2019-07-03 | 2023-05-09 | Beyond Semiconductor, d.o.o. | Systems and methods for data-driven secure and safe computing |
| US12197608B2 (en) | 2021-05-10 | 2025-01-14 | Beyond Semiconductor, d.o.o. | Inter system policy federation in a data-driven secure and safe computing environment |
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| JP3923715B2 (ja) * | 2000-09-29 | 2007-06-06 | 株式会社東芝 | メモリカード |
| US6434044B1 (en) * | 2001-02-16 | 2002-08-13 | Sandisk Corporation | Method and system for generation and distribution of supply voltages in memory systems |
| JP4034947B2 (ja) * | 2001-05-31 | 2008-01-16 | 株式会社ルネサステクノロジ | 不揮発性記憶システム |
| JP2004280378A (ja) * | 2003-03-14 | 2004-10-07 | Handotai Rikougaku Kenkyu Center:Kk | 半導体装置 |
-
2004
- 2004-12-21 WO PCT/JP2004/019058 patent/WO2006067833A1/ja not_active Ceased
- 2004-12-21 US US10/561,521 patent/US7286435B2/en not_active Expired - Fee Related
- 2004-12-21 CN CN2004800446765A patent/CN101088099B/zh not_active Expired - Fee Related
- 2004-12-21 JP JP2006548632A patent/JP4674868B2/ja not_active Expired - Fee Related
-
2005
- 2005-12-20 TW TW094145271A patent/TWI402852B/zh not_active IP Right Cessation
-
2007
- 2007-09-17 US US11/856,204 patent/US20080010478A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02196390A (ja) * | 1989-01-26 | 1990-08-02 | Hitachi Maxell Ltd | Icカード |
| JPH09231339A (ja) * | 1996-02-27 | 1997-09-05 | Mitsubishi Electric Corp | メモリカード |
| JP2003345671A (ja) * | 2002-05-29 | 2003-12-05 | Matsushita Electric Ind Co Ltd | メモリ混載半導体集積回路 |
| JP2004064328A (ja) * | 2002-07-26 | 2004-02-26 | Denso Wave Inc | 電源電池内蔵型非接触データキャリア及びこれを用いた移動体識別システム |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101088099A (zh) | 2007-12-12 |
| CN101088099B (zh) | 2010-05-05 |
| US7286435B2 (en) | 2007-10-23 |
| TW200636739A (en) | 2006-10-16 |
| JP4674868B2 (ja) | 2011-04-20 |
| TWI402852B (zh) | 2013-07-21 |
| US20080010478A1 (en) | 2008-01-10 |
| US20070108293A1 (en) | 2007-05-17 |
| JPWO2006067833A1 (ja) | 2008-06-12 |
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