numeric Display 15-3fReserved40Medical Instruments 41-7FReserved80-83Monitor pages84-87Power pages88-8BReserved8CBar Code Scanner page8DScale ic Stripe Reading (MSR)Devices8FReserved Point of Sale pages90Camera Control Page91Arcade Page92-FEFFReservedFF00-FFFFVendor-defined关于Usage Page的每一个有效定义项,都有一个相应的下一级定义,如Usage Page的数据项数值为1,则设备定义为Generic Desktop Controls,关于该类设备的具体功能可以在HID Usage Tables中查到具体的定义。下表是HID Usage Tables中对Generic Desktop Controls设备的功能定义。表8-7 Generic Desktop Controls用法定义Usage IDUsage NameUsage Type参阅HID Usage Tables中的相关章节00Undefined01PointerCP4.102MouseCA03Reserved04JoystickCA4.105Game PadCA06KeyboardCA07KeypadCA08Multi-axis ControllerCA09Tablet PC System ControlsCA0A-2FReserved30XDV4.231YDV32ZDV33RxDV34RyDV35RzDV36SliderDV4.337DialDV38WheelDV39Hat switchDV3ACounted BufferCL4.6
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