Abstract: A remote control positioning system adopting radio frequency (RF) positioning technology and displaying positioning information of the remote control on a display is provided. When a user is searching for the remote control, the remote control positioning system can be used to obtain the positioning information from a screen of the display, and the user can rapidly determine a position of the remote control according to environment images captured by an image capturing module. Thus, the time for searching by the user is saved, and an effect of precise tracking is realized as well.

Abstract: A remote control device having a tracking unit is provided. The remote control device has an audio code receiver therein and cooperated with a transmitter. When the device being used by a user, the transmitter generates an audio signal to the corresponding audio code receiver in the remote control device, so that the remote control device will generate a sound; therefore, the user can easy find the remote control device. The transmitter includes a sound signal generating unit, a sound processor, a control interface, and a speaker. The audio code receiver includes a sound controller, a signal frequency and timing detector, a received signal processor, and a sound sensor and a sound generating unit, and so on. By way of using the remote control device which includes several difference audio code receivers, the user can easily find the remote control device.

Abstract: A compact pen has a top barrel, a controlling device securely mounted inside the top barrel, and a bottom barrel telescopically connected with the top barrel by means of threading engagement between the controlling device and the bottom barrel. An ink container having a tip is disposed inside the top barrel and the bottom barrel and further extends into the controlling device, whereby the tip is able to retract into the bottom barrel when not in use and the length of the compact pen is short in order to be conveniently carried around.