Patent ID: 7269022
Filing Date: 2007-09-11
Classification: G06K,H01R

Abstract:
1. An interface signal framework, comprising: a power supply (V a signal group, further comprising a D+ and a D− signals; a ground signal (Power GND); a power indicating signal connected to both a first power indicator on an exterior surface of a USB device and a second power indicator on an exterior surface of a USB host, wherein both the first power indicator and the second power indicator indicates to a user a status of power of the device: and a device work signal group, for indicating the working status of the device; wherein, the D+ and D− signals are data signal in accordance with the standard USB interface specification and the device work signal group is connected with a controller to response a read or write status of the controller where a read or write command is from the USB host, wherein the device work signal group further comprises a read/write or transmitting work signal for indicating a work status of the device.