Abstract: An antenna includes a base plate, a grounding component, a feed-in conductor, a first controlling unit and a second controlling unit. The base plate includes a first surface and a second surface. The grounding component is provided on the first surface and includes a first part, a second part and a notch formed between the first part and the second part. The feed-in conductor is provided on the second surface and includes a first conducting part. The first conducting part extends across the notch, and is coupled to the first part. The first controlling unit is provided on the second surface and includes a first wire. The first wire extends across the notch, and is coupled to the first part. The second controlling unit is provided on the second surface and includes a second wire. The second wire extends across the notch, and is coupled to the first part.

Abstract: An electronic system and device utilizing the same. The external device type is determined and provided corresponding function according to electrical parameter of the external device.

Abstract: The apparatus of interruptible analog input of the present invention includes: a plurality of resistors; a electronic signal detecting circuit used to detect the terminal electronic signal generated by the plurality of resistors and then generate a real-time signal when the terminal electronic signal changes; a analog-to-digital converter used to convert the terminal electronic signal into a digital format whenever the terminal electronic signal changes. The method of interruptible analog input of the present invention includes: detecting whether the terminal electronic signal of a plurality of resistors changes, if not, then executing the current proceeding process, else, determining whether interrupting the current proceeding process or not; if determining to interrupt, converting the changed terminal electronic signal into a digital format; finding the pressed key of a keyboard corresponding to the digital format via a lookup table and then executing the corresponding function of the pressed key.

Abstract: A secondary communication module of a wireless communication device with a first protocol is provided. The secondary communication module is detachably installed on the wireless communication device, which includes a housing, a battery installed inside the housing for providing power to the wireless communication device, a radio frequency (RF) circuit installed inside the housing for converting RF signals, and baseband signals in order to provide a second protocol, which different from the first protocol, and a baseband circuit connected to the RF circuit for processing the baseband signals.