Abstract: The present disclosure, in some embodiments, relates to a method of forming an integrated chip. The method includes forming a first conductive structure over a substrate. A first intermediate sidewall spacer is formed to surround the first conductive structure. A masking material is formed over the substrate and around the first intermediate sidewall spacer. A part of the first intermediate sidewall spacer protrudes outward from the masking material. The part of the first intermediate sidewall spacer that protrudes outward from the masking material is etched to form a first sidewall spacer.

Abstract: A frequency tracking method applied to a positioning system is provided. The method includes receiving a baseband signal, the baseband signal includes a line of sight (LOS) signal and a multipath signal; generating a cost function according to equal step frequencies, the baseband signal and a signal average energy; and generating an estimated LOS frequency according to the cost function.

Abstract: A frequency tracking method applied to a positioning system is provided. The method includes receiving a baseband signal, the baseband signal includes a line of sight (LOS) signal and a multipath signal; generating a cost function according to equal step frequencies, the baseband signal and a signal average energy; and generating an estimated LOS frequency according to the cost function.

Abstract: A keyboard-video-mouse (KVM) switch system capable of detecting an interface of a computer and an interface adapter used therefor are provided. The KVM switch system includes a computer connector, a processor, and a detecting link. The computer connector is coupled to a computer. The processor is coupled to the computer connector with the detecting link connected therebetween. The processor outputs a first signal to the computer via the computer connector when the processor detects that the detecting link provides a first level and outputs a second signal when the interface adapter is connected between the computer connector and the computer, therefore, the processor detects that the detecting link and the computer provide a second level. The interface adapter has a PS/2 interface and a USB interface. A reserved pin of the PS/2 interface is connected to a power pin of the USB interface.