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Agfa字体压缩技术的优点是能够减小字体占用的ROM和RAM空间，另外能够保证在压缩和解压缩后数据不丢失。如果采用字体压缩，Agfa压缩技术将字体压缩成TrueType格式，并另存为扩展名为“.ac3”的文件，那么CE在使用字体的时候首先寻找扩展名为“.ac3”的文件。如果不采用字体压缩，CE将使用非压缩字体，如扩展名为“.ttf”“.ttc”的文件。

[Source : MSDN] 

The following list shows the registry values that control system power state transitions for the sample Power Manager:

• ACUserIdle
• ACSystemIdle
• ACSuspend
• BattUserIdle
• BattSystemIdle
• BattSuspend
• BatteryPoll

These DWORD values are stored in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\Timeouts registry key. A value of 0 indicates that no time-out will occur. The sample implementation does not provide a method for bypassing OS power states; however, OEMs may choose to do so.

For the Power Manager to actively manage system power states, these settings need to be present in the registry. The actual decision to manage system power is based on the presence of ACUserIdle.

Note   To prevent conflicts between GWES and the Power Manager, you need to disable GWES power management as described previously. When the Power Manager is actively managing system power, it may restrict applications from entering arbitrary system power states.

You can reset the system state transition timers by creating a named auto-reset event called _T(« PowerManager/ReloadActivityTimeouts« ) and calling SetEvent on the handle of that event. This informs the Power Manager to read transition timer settings again from the Timeouts registry key.

Registry Settings

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlPowerTimeouts]

« ACUserIdle »=dword:3c; in seconds

« ACSystemIdle »=dword:12c; in seconds

« ACSuspend »=dword:0; in seconds

  »BattUserIdle »=dword:3c; in seconds

  »BattSystemIdle »=dword:b4; in seconds

  »BattSuspend »=dword:12c; in seconds

« BatteryPoll »=dword:1f4; battery polling interval, in milliseonds

[Source : Microsoft]

Microsoft Corporation

October 2002

Applies to:
    Microsoft® Windows® CE .NET 4.1 and later

Summary: Learn about the design tradeoffs involved in creating Windows CE .NET operating system (OS) solutions for hardware that implements one of many nonvolatile storage technologies. Different storage technologies, such as NAND and NOR flash memory, masked ROM, and electromechanical Advanced Technology Attachment (ATA) or Integrated Drive Electronics (IDE) storage, impose design constraints and create opportunities for the software environment. (30 printed pages)

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Source E-TEN 

The G500 is the first Pocket PC Phone from E-TEN to have fully integrated GPS capabilities. The G500′s embedded RoyalTek GPS module, featuring the SiRF Star III high sensitivity chipset and an innovative internal antenna design, means that PDA or phone owners who also regularly need to access GPS services, no longer have to carry additional accessories or even a separate GPS device when they travel. No other product makes it as easy or as convenient as the G500 to have the latest satellite navigation technology always on hand. The G500 is designed to be the perfect all-in-one handheld device. At only 119 x 62 x 23mm the G500 is comparable in size to traditional mobile phone handsets. In addition to GSM phone and GPS functions, the device also serves as a high-specification PDA running Windows Mobile 5.0. The device uses a Samsung S3C2440 processor operating at 400 MHz and includes 128MB of Flash ROM and 64MB SDRAM memory, which can be used to save applications and files. The device uses a replicable 1,440mAh Li-Ion battery, which offers on average 3.5-4 hours of talk-time or 10-15 hours of Pocket PC usage. Finally, the G500 also features a 1.3M pixel CMOS camera and built in microphone allowing users to capture digital images, voice recordings, and even movies.

 Site MIO: http://www.mio-tech.com.tw/products/gps/a201/default.htm

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