TWI269153B - Power management method of storage device and system thereof - Google Patents

Power management method of storage device and system thereof Download PDF

Info

Publication number
TWI269153B
TWI269153B TW94102944A TW94102944A TWI269153B TW I269153 B TWI269153 B TW I269153B TW 94102944 A TW94102944 A TW 94102944A TW 94102944 A TW94102944 A TW 94102944A TW I269153 B TWI269153 B TW I269153B
Authority
TW
Taiwan
Prior art keywords
power
storage device
power supply
time
module
Prior art date
Application number
TW94102944A
Other languages
Chinese (zh)
Other versions
TW200627136A (en
Inventor
Hong-Yang Li
Original Assignee
Mitac Int Corp
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 by Mitac Int Corp filed Critical Mitac Int Corp
Priority to TW94102944A priority Critical patent/TWI269153B/en
Publication of TW200627136A publication Critical patent/TW200627136A/en
Application granted granted Critical
Publication of TWI269153B publication Critical patent/TWI269153B/en

Links

Abstract

The present invention relates to a power management method of storage device and a system thereof for enabling a power management operation to be conducted when the battery supplies power to the storage device. The method of the invention comprises: detecting the capacity status of the battery power supply; adjusting the counting time of a counter in accordance with the capacity status; initiating the counter and making the storage device enter into a normal operation mode; determining whether the storage device accesses the data within the counting duration; when the counting time is reached, confirming that the storage device does not access the data and making the storage device enter into an idle operation mode; then, initiating the counting process of the counter; and making the storage device enter into a standby mode and stopping the power supply to the storage device after the counting time is reached.

Description

1269153 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種電源管理方法及其系統,特別是一種儲 存裝置之電源管理方法及其系統。 【先別技術】 iw著資訊產業的發展,人們透過資訊處理裝置與網際網路 =取各種所需資訊,其中可攜式資訊處理裝置因為具有攜帶 方便的優點,近年來受到使用者的青睞。 站賦貧訊處理裝置中,包含有筆記型電腦與個人數位 ☆且击Α)等等,其中個人數位助理較筆記型電腦輕便且攜帶 ί資料必備的工具之…而個人數位助理可 抵素^士 =子;卜揮發性0己憶體或揮發性記憶體中,若電池電力 揮f中的資料將會消失,故需特 的微型硬磾ί 則有人數位助理設計有CF介面 的問題,ϋ-方'sJlt述因電池電力耗盡而導致資料流失 資料存取作業時,需儲^置對應 料存取動作,且經過料八=貝寫碩馬達運轉’以進行相關資 電量較多的模組分別為^ 式資訊處理裝置中,耗 源使用情形,料延幕與硬碟’若能有效管理電 命。 冏式負讯處理裝置的使用時間及壽 統,=研置之電源管理方法及其系 【發明内容】 赛於以上的問題,本發 置之電源管理方法及其系松要目的在於提供一種儲存裝 調整進入待機運作模依f目前電源供應_型,對應 裝置的電源使用情形。、,曰’’错以有效管理可攜式資訊處理 5 1269153 理方法本發明所揭露之儲存裝置之電源管 源供應電源或外接電源);依據電 褒置是否進行龍存取動計時時間内檢測儲存 f並無進行資料存取動作,進人認儲存裝1269153 IX. Description of the Invention: [Technical Field] The present invention relates to a power management method and system thereof, and more particularly to a power management method and system for a storage device. [First-hand technology] Iw is the development of the information industry. People use information processing devices and the Internet to get all kinds of information. Among them, portable information processing devices have been favored by users in recent years because of their portability. The station is equipped with a notebook computer and personal digital ☆ and killed, etc., in which the personal digital assistant is lighter than the notebook computer and carries the necessary tools of the data... and the personal digital assistant can meet the ^ If the data in the battery power f will disappear, it is necessary to have a special micro-hard 磾 ί. - Fang's Jlt said that when the battery power is exhausted and the data is lost, the data access operation is required, and the corresponding material access operation is required to be stored, and the material is required to perform the operation of the motor. The group is respectively used in the information processing device, which consumes the source usage situation, and can be used to effectively manage the life of the screen and the hard disk. The use time and life system of the 负-type negative processing device, = the power management method of the research and its system [invention content] In the above problems, the power management method of the present invention and its system are aimed at providing a storage device The adjustment enters the standby operation mode according to the current power supply type, corresponding to the power usage of the device.曰 ' ' 以 以 有效 有效 有效 有效 有效 有效 有效 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' Storage f does not perform data access actions.

建作ϋ並停止對儲存裝置提供電源。$進入待A 〆、中當電源供應類型為電池電源日丰,丄 調整計時器的計時時間, 更依據電池剩餘電量 間均不相同,另外,電赠段),其對應的計時時 時,儲存裝置無^==&餘電量低於第三電量階段 理系統,係用^^所揭露之儲存裝置之電源管 業,包含His 電源管理作 及開關模組。 逼源狀怨偵測板組、計時器模組 電源供應模組,提供儲存装置彳例 源’而依據幢應_爾為 ς中電祿㈣貞測权組更與儲存裝置連接 二 貝料存取狀態’例,磁頭的讀寫動作等等。、、-裝置的 ^馳組偵測之名口果,调整計時時間,並產 關模組,以控制_模組動作(例,導通或斷^似叙開 開關模、组,接收計時器模組產生的控制 3作,使電源供應模組的電源通過或斷開’以驅動儲 藉由這種儲存裝置之電源管理方法及其系統,利用檢測電 6 !269153 應類型’對應調整進入待機模式的時間,以針對各種電源 /、〜的特性作最佳調配,並進行電源管理作業。 有關本發明的特徵與實作,茲配合圖示作最佳實施例詳細 况明如下。 【實施方式】 勹人^參照「第1圖」’係為本發明之電源管理系統方塊圖, 匕,有·電源供應模組1〇、電源狀態偵測模組n、 組12、開關模組13及儲存裝置14。 才為衩 ㈣i源供應· ig ’提供儲存裝置14(例,硬碟)運轉所需 冤’原、、’而據電源供應類型可區分為電池電源與外接電源。 、、/源狀態偵測模組11,與電源供應模組10連接,偵測雷 i、二ί型與電源電量狀態,並產生一偵測結果,其中電源狀 恶偵测模組11 f盘继;m 、圭& 电斤狀 資料存驗r 儲雜置14賴,以侧儲存裝置14的 科5取狀<%,例,麵的讀寫動作等等。Built and stopped supplying power to the storage device. $ enters to wait for A, and when the power supply type is battery power, the time of the timer is adjusted, and the battery is not the same according to the remaining battery power. In addition, the battery is provided with the corresponding timing and time. The device does not have ^==& the remaining power is lower than the third power stage system, and the power supply industry of the storage device disclosed by ^^ is included, including the His power management and switching module. Forced source resentment detection board group, timer module power supply module, providing storage device example source 'and according to the building should be _ er ς 电 电 电 (4) 贞 权 right group and storage device connected to the two shells Take the state 'example, read and write operations of the head, and so on. ,, - the name of the device's detection group, adjust the timing, and output the module to control the _module action (for example, turn on or off) like switch mode, group, receive timer mode The control generated by the group 3 makes the power supply of the power supply module pass or disconnect 'to drive the power management method and system of the storage device, and the detection type 6 269 153 should be typed correspondingly to enter the standby mode. The time is optimized for the characteristics of various power sources, and the power management operation is performed. The features and implementations of the present invention will be described in detail with reference to the preferred embodiments.勹人^ Refer to "Figure 1" as a block diagram of the power management system of the present invention, 匕, a power supply module 1 , a power state detection module n, a group 12, a switch module 13 and a storage device 14. Only for the 四 (4) i source supply · ig 'provide storage device 14 (for example, hard disk) operation required 冤 'original,' and according to the power supply type can be divided into battery power and external power supply., / / source state detection Test module 11, and power supply mode 10 connection, detecting the lightning i, two type and power state, and generating a detection result, wherein the power-like detection module 11 f is followed; m, gui & 14 is applied to the section 5 of the side storage device 14 <%, for example, the reading and writing operation of the surface, and the like.

整叶’與電源狀態細莫組11連接,具有可調 果°十:2=特性’依據電源狀態偵測模組11產生之偵測J 13 ^ m、、且動作(例,導通或斷開)。 連接=====錢及糊模組 =_供_㈣動置作u 放資料,s中儲4存C果組13連接,提供一儲存區域以存 工作電源約==電;為;:CT介面的微型硬碟,其 料存二 置μ可依據資T存取%1%%電進 = 二置作1 業4 :而儲存裝 7 1269153 待機運作模式,系統停止提彳妓仏 時-段預定__魏置14 u ’於計 時一段__伽她料_彳而需於計 睡眠運作模式’系統僅提供仏處 :、。 J),於t運作模式下,系統將限制儲ϊίί Γ4二ΐ中未 作,即儲存裝置14無法進行存取作業,mt丁存取動 與計,,之_意圖源電量 間為T1,當電池電量處計時時 ^電池電量處於第三電量階段時,時 時間τι大於計時時間T2大 二予=T3,而計時 2Β圖」,係為本發明之外接電另外’請參照「第 係示意圖,圖中的橫軸代表電源電量:二= 外接電源並無電量變化的問題,故計日夺器 請參照「第3圖」,係為本發明 T1。 1〇〇) ^ 疋_内檢測儲存裝置14是否進行存取動上二)2 定時間内,認儲存裝置14有存取動作時乍(回到步驟3預 於預定時間到達後,讀認儲存裝置14 I在 / =仍提供電源給儲存裝置14;啟_整1$ j 於待機運作模式下,系統停止對儲雜置M 斷是否喚醒系統(步驟1G7),例,透過任意鍵唤醒機制進行^ 1269153 確認〜 請參照「第4A圖」,係為本發明之雷 電源供電時之電源管理步麟糊,首先,確^ 為電池 類型為電池電源供電(步驟200),儲存f ^ =電源供應 作模式(步驟2〇1),並啟動計時器開=== 定進 =常運 2〇2),於預定時間内檢測儲存裝置 叙j(步驟 =預定時間内’確認儲存裝置14否有^ 統進下置來1;:ϊ;時,系 間(步驟施)’而電池電量可區分為三個十時時 69%〜30%,代表電池為第二電量階段,味(巧,電量為 ; mmtm 290/0^50/0, 严皆段’其計時器設定時間為計時時間T3,而時門ϋ 時間ΐι動時-段計時時間(例,計時 =;==;步驟-若一系統: 9 1269153 電源發明之電源供應類型為外接 預定時間丨⑽開料時—段預定時間(步驟规),於 步驟301。、 確^儲存装置14有存取動作時,回到 時:置14並無進行存取動作 統仍提供電源給儲於閒置運作模式下,系 進入待機運作十時時間到達後’儲_ ^ 則維持目前運作模式_j 2()7m^^喚醒系統, 時,則無睡眠運作模I )另外,於外接電源供電狀態 源供方法及其系統,利用檢測電 是電源供應ί=====式的等待時間,特別 機運作赋的__,叫效進入待 限定本發明,任域露如上,雜並非用以 範圍内’當可作些許之更動^ 本發明之精神和 圍須視本說明書所附之’α^=之專利保護範 【圖式簡單說明】 物―所界疋者為準。The whole leaf 'connects with the power state fine group 11 and has an adjustable factor of 10: 2 = characteristic 'detected according to the power state detecting module 11 J 13 ^ m, and the action (for example, turning on or off) ). Connection ===== money and paste module = _ for _ (four) move for u put data, s store 4 save C fruit group 13 connected, provide a storage area to save working power about == electricity; for; The micro-hard disk of the CT interface, the material storage two sets μ can be accessed according to the capital T%1%% electric input = two sets for 1 industry 4: and the storage device 7 1269153 standby operation mode, when the system stops lifting - The segment is scheduled __Wei 14 u 'in the time of a period of __ 伽 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ J), in the t mode of operation, the system will limit the storage ϊ ί ΐ ΐ ΐ ΐ ΐ ΐ ΐ , , , , , , , , 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存 储存When the battery level is timed ^When the battery power is in the third power stage, the time τι is greater than the time T2, the second time is =T3, and the time is 2", which is the external power supply for the invention. Please refer to the "System Diagram". The horizontal axis in the figure represents the power supply: 2 = There is no problem with the power supply change of the external power supply. Therefore, please refer to "3" for the ticker, which is T1 of the present invention. 1〇〇) ^ 检测 _ Detecting whether the storage device 14 is accessing or not. 2) When the storage device 14 has an access action within a certain period of time (return to step 3 after a predetermined time arrives, read and store The device 14 I still supplies power to the storage device 14 at /=; in the standby operation mode, the system stops whether the memory is awake or not (step 1G7), for example, through any key wake-up mechanism. ^ 1269153 Confirmation ~ Please refer to "Figure 4A" for the power management of the lightning power supply of the present invention. First, make sure that the battery type is the battery power supply (step 200), store f ^ = power supply Mode (step 2〇1), and start the timer on === set-in = regular transport 2〇2), detect the storage device in the predetermined time j (step = predetermined time 'confirm storage device 14 has ^ The system is set to 1;:ϊ; when, the system (steps)' and the battery power can be divided into three ten-hour time 69%~30%, which means the battery is the second power stage, taste (smart, electricity is ; mmtm 290/0^50/0, Strict section 'The timer setting time is the timing time T3, and the time threshold is ΐι movement time - segment timing time (example, timing =; ==; step - if a system: 9 1269153 power supply invention power supply type is external scheduled time 丨 (10) when opening material - segment scheduled time (step rule), in step 301. When the storage device 14 has an access action, when it returns, the device 14 does not perform the access operation, and the power supply is still stored in the idle operation mode, and the system enters the standby operation for ten hours after the arrival of the storage_^ At present, the operation mode _j 2()7m^^ wakes up the system, when there is no sleep operation mode I) In addition, in the external power supply state source supply method and system thereof, the detection power is the power supply ί===== The waiting time, the special machine operation assigned __, called the effect to be limited to the present invention, the domain is exposed as above, the miscellaneous is not used in the scope 'when a little change can be made ^ The spirit of the invention and the scope of the present invention Attached to the 'α^= patent protection model [simple description of the schema] The object - the boundary is subject to change.

Lk圖=本:月所提之系統方塊圖; 之關係示意圖/明所提之電池電源之電源電量與計時器時間 1269153 之關係示意圖,·χ θ之外接電源之魏電量與計時器時間 第3圖係為本發明所提之 電源 之電源 官理步驟流程圖;及 ^蝴生馬罨池電源時之 ίΓ步咖騎接電源時 【主要元件符號說明】 10 電源供應模組 11 電源狀態偵測模組 12 計時器模組 13 開關模組 !4 儲存裝置 Τ1 計時時間 Τ2計時時間 Τ3計時時間 依據電源供應類型調整計時器的計時時間 ,入正常運作模式並啟動計時器開始計時一段預 步驟100偵測電源供應類型 步驟101 步驟102 步驟103於預定時間内偵測儲存裝置是否進行存取 步驟104進入閒置運作模式 步驟105啟動調整後的計時器並開始計時 步驟106於計時時間到達後進入待機運作模式 步驟107是否喚醒系統 步驟108維持目前運作模式 步驟200確認電源供應類型為電池電源供電 步驟201進入正常運作模式 步驟202啟動計時器並計時一段預定時間 11 1269153Lk diagram = this: the system block diagram mentioned in the month; the relationship diagram / the relationship between the power supply of the battery power and the timer time 1269153, · χ θ external power supply and the timer time 3 The figure is a flow chart of the power supply principle of the power supply mentioned in the present invention; and when the power supply of the raw material of the horse is used, the main component symbol description 10 power supply module 11 power state detection mode Group 12 Timer Module 13 Switch Module! 4 Storage Device Τ 1 Timing Time Τ 2 Timing Time Τ 3 Timing Time Adjust the timer time according to the power supply type, enter the normal operation mode and start the timer to start a pre-step 100 detection. Power Supply Type Step 101 Step 102 Step 103: Detect whether the storage device performs access within a predetermined time. Step 104 Enter the idle operation mode. Step 105 starts the adjusted timer and starts the timing step 106. After the chrono time arrives, the standby operation mode is entered. 107 whether to wake up the system step 108 to maintain the current operating mode step 200 to confirm that the power supply type is a battery Power Supply Step 201 enters the normal operation mode. Step 202 starts the timer and counts for a predetermined period of time 11 1269153

步驟203 步驟204 步驟205 步驟206 步驟207 步驟208 步驟209 步驟210 步驟300 步驟301 步驟302 步驟303 步驟304 步驟305 步驟306 步驟307 步驟308 於預定時_侧贿裝置是 進入閒置運作模式 偵測電池剩餘電量 依據電池_電量調整計時器 啟動調整後的計時器並開始計時卞揭間 於計時時_達後進人待機運 是否喚醒系統 維持目前運作模式 確認電源供應_為外接電源供雷 進入正常運作模式 、电 啟動計時機继計時—段預定 於預定時間⑽_存裝置是ς 進入閒置運作模式 &占進仃存取 啟動計時器並開始計時 達後進人待機運 疋否唤醒系統 姨式 維持目前運作模式Step 203 Step 204 Step 205 Step 206 Step 207 Step 208 Step 209 Step 210 Step 300 Step 301 Step 302 Step 303 Step 304 Step 305 Step 306 Step 307 Step 308 At the time of the reservation, the bribe device is in the idle operation mode to detect the remaining battery. According to the battery _ power adjustment timer, the adjusted timer is started and the timing is started. When the time is up, the user will wake up the system and maintain the current operation mode to confirm the power supply. _ For the external power supply, the lightning supply enters the normal operation mode. The electric start timer is followed by the timing - the section is scheduled at the scheduled time (10) - the storage device is ς enters the idle operation mode & enters the 启动 access start timer and starts counting, after entering the standby operation, waking up the system, maintaining the current operating mode

1212

Claims (1)

1269153 申請專利範圍: Si:池電ί供1之電源電量狀態;. 使“存2d㈡m十時時間; 時該計時時間; 吊運作拉式,並啟動該計時器計 動作 乍於該計時時間内檢_儲存裝置是否進行—資料存取 啟動该計時器計時該計時時間;及 2· :以;裝置進入-待機運作模 量階段及-第三電量階段。a $電里階段、一第二電 3.如申請專利範圍第2項所述之電源 =對應之該計時時間大於該第二電量階段::口 4· 範圍第3項所述之電源管理方法’其中节第1 於該第三電量階段時,更使該健= 6·如申请專利範圍第5項所述之電 穿#所述^_理方法’其中於該儲存 该雜運作模式後,更透過—任意鍵喚醒機制^ 13 1269153 s f;f裝置回復至該正常運作模式。 ς該正常運作模式:並啟二 9. 電源管理系統,係於該儲存裝置使用-電、、也 电机、電時,進行一電源管理作 夏制東池 一電源供應模組,提供該館存 所 一電源狀態_模組,_^|置之電源; 類型與電源電量狀態,並產生!無組之電源供應 一計時器翻,具材稱—H果’ 電源狀態偵測模組之該伯測二^十寺二,,特性’依據該 —控制訊號;及 <制、、、。果·撕時時間,並產生 對應器模組產生之該控制訊號,以 存裝置_使魏源通過或斷開,以驅動該儲 10.如申請專利範圍第9項所述 ϊ依據一剩餘電量狀態可區分為中該ϊ池電 1階段及一第三電量階段。 弟電里卩自奴、一弟二電 11·=申請專利範圍第1〇項所述之 電量階段對應之該計時時間大於S理=,其中該第-電量階段。 、以第一電置階段及該第三 12. ίίίίίϊ圍第11項所述之電源管理系統,其”第- 對應之該計時時間大於該第:雷詈㈣、以第一 13. 如申請專利範圍第9項所述之電 源之剩餘電量低於該第三電量階“里更 電池電 一睡眠運作模式。 白仅^更使该儲存裝置進入 14.iiC圍第13項所述之電源管理系統’盆中π舞 眠運她式下,該儲存裝置無法進行該㈣存取&於顧 14 12691531269153 Patent application scope: Si: Pool power supply for 1 power supply status; Make "Save 2d (2) m ten hour time; Time the time; Lift operation pull, and start the timer action 乍 该 该 该_ Whether the storage device is performing - data access is initiated by the timer to time the time; and 2: :; the device enters the - standby mode of operation and the - third phase. a $ electrical phase, a second electrical 3 The power supply as described in item 2 of the patent application scope corresponds to the time period corresponding to the second power phase:: port 4· the power management method described in the third item, wherein the section 1 is in the third power phase At the same time, the health is further improved as described in the fifth paragraph of the patent application scope, wherein the storage method is further transparent, and the key is awakened by any key. ^ 13 1269153 sf The device returns to the normal operation mode. ς The normal operation mode: and the second power supply management system is based on the storage device using - electricity, motor, electricity, a power management for the summer system a power supply module Provide the power supply status of the library _ module, _^| set the power; type and power state, and generate! No group power supply a timer turn, the material is called - H fruit 'power status detection The module of the module is the second test, the characteristic 'according to the control signal; and < system,,,, fruit, tear time, and generate the control signal generated by the corresponding module to save the device _Weiyuan is passed or disconnected to drive the storage. 10. As described in item 9 of the patent application, the state of the remaining electricity can be divided into the first stage of the battery and the third stage of the electricity. The time period corresponding to the power phase described in item 1 of the patent application scope is greater than the S =, wherein the first power phase, the first electrical phase and the third 12. The power management system described in item 11 has a "correspondence" greater than the first: Thunder (4), with the first 13. The remaining power of the power source as described in claim 9 Below the third power level . ^ More only white mode so that the power storage means into the management system of the 14.iiC around the item 13 'dance her sleep operation π formula pots, the storage device can not be accessed (iv) the & 141,269,153 in GU 15.如申請專利範圍第9項所述之電源管理系統,其中於該儲存 裝置進入該待機運作模式後,更透過一任意鍵喚醒機制,使 該儲存裝置回復至該正常運作模式。 1515. The power management system of claim 9, wherein after the storage device enters the standby mode of operation, the storage device is returned to the normal operation mode by an arbitrary key wake-up mechanism. 15
TW94102944A 2005-01-31 2005-01-31 Power management method of storage device and system thereof TWI269153B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94102944A TWI269153B (en) 2005-01-31 2005-01-31 Power management method of storage device and system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94102944A TWI269153B (en) 2005-01-31 2005-01-31 Power management method of storage device and system thereof

Publications (2)

Publication Number Publication Date
TW200627136A TW200627136A (en) 2006-08-01
TWI269153B true TWI269153B (en) 2006-12-21

Family

ID=38291461

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94102944A TWI269153B (en) 2005-01-31 2005-01-31 Power management method of storage device and system thereof

Country Status (1)

Country Link
TW (1) TWI269153B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497270B (en) * 2009-07-28 2015-08-21 Avago Technologies General Ip Methods and apparatus for power allocation in a storage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497270B (en) * 2009-07-28 2015-08-21 Avago Technologies General Ip Methods and apparatus for power allocation in a storage system

Also Published As

Publication number Publication date
TW200627136A (en) 2006-08-01

Similar Documents

Publication Publication Date Title
TWI360045B (en) Method for switching automatically power state
CN101598969B (en) Platform power management based on latency guidance
US11714477B2 (en) Low-power ambient computing system with machine learning
TWI379655B (en) Digital photo frame with power saving function and related power saving method
CN107025906B (en) Method and product for extending period of speech recognition and information processing apparatus
TW406220B (en) Controlling a computer's power state
CN105912092B (en) Voice awakening method and speech recognition equipment in human-computer interaction
TWI464571B (en) A power saving electronic device for a computer motherboard in a standby dormant state and a computer motherboard
CN1442772B (en) Method for executing real-time application and implementing power saving
Zhong et al. Energy efficiency of handheld computer interfaces: limits, characterization and practice
TW200527193A (en) Low power media player for an electronic device
CN102725709A (en) Memory power reduction in a sleep state
TW200915195A (en) A handwriting record device
CN111562836B (en) Power saving method, device, equipment and storage medium applied to electronic equipment
TW201109909A (en) Power-saving management method for computer peripheral device and system thereof
US8659563B2 (en) Electronic device with a page turning function during a sleep mode of the electronic device
WO2018227472A1 (en) Screen wake-up method and apparatus, and terminal device
US20180283732A1 (en) Control device of water heating apparatus, water heating apparatus and control method thereof
CN109343696A (en) A kind of the comment method, apparatus and computer readable storage medium of e-book
CN104081314A (en) Implementing power off state in computing device
WO2022156600A1 (en) Buffer size adjustment method, apparatus, electronic device, and readable storage medium
US20120311361A1 (en) Predictive power state transitions for information handling devices
CN100399237C (en) Portable electronic device capable of auto switching electric source modes and switching method thereof
US20120042183A1 (en) Apparatus for adjusting computer power mode
CN103065654B (en) Mobile device chip and mobile device control method thereof

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees