Abstract: A printed circuit board (PCB) assembly provides a two layer capacitive trackpad sensor in which an EMI ground grid is interposed among the sensor's capacitive elements on each of its layers. The EMI grid on each of the two layers is electrically coupled via, typically, vias. The described arrangement of sensor elements (capacitor plates) and EMI ground grid traces may be incorporated into a PCB having additional layers (e.g., a four, six or eight layer PCB). If used in this manner, additional vias are provided on the PCB which permit electrical coupling between these “additional layers” and which are electrically isolated from, and shielded by, the EMI ground grid.

Abstract: An apparatus for interfacing with a control system, and in particular a home automation system. In one embodiment, the apparatus comprises an integrated LCD touch screen and motion sensor. The motion sensor is used to illuminate a backlight to the touch screen when a person approaches the apparatus. The sensitivity of the motion sensor may be adjusted through a graphical user interface displayed on the touch screen. In addition, the backlighting may be adjusted so that the illumination is at a specific level with the screen is on, i.e., when the motion sensor has been tripped, and a specific level when the screen is off. The apparatus may further comprise an IR receiver for receiving commands via a remote. In addition, the apparatus may be powered from a local bus or an external power supply. The apparatus may comprise a communications port for receiving customized pages from a computer.

Abstract: A data record method using a touch panel is disclosed. The touch panel can be separated from a computer. The computer and the touch panel store data having plural records respectively. The method includes the steps: (A) determining if the touch panel is connected with the computer at work; (B) executing a synchronization procedure for data synchronization between the computer and the touch panel when connecting; and (C) displaying data stored in the touch panel when not connecting.