Abstract: An engine state detection device adapted to a vehicle engine is electrically connected to a battery module providing a power signal is disclosed. The device includes a windowed comparison circuit and a controller. The windowed comparison circuit is configured to receive the power signal and convert the power signal to one of a plurality of sets of subject signals according to one of a plurality of level profiles. Each of the plurality of level profiles is related to a respective one of the plurality sets of subject signals. The controller is configured to perform an algorithm on the set of subject signal converted from the power signal for generating a combination signal, and determine a state of the vehicle engine according to the set of subject signal converted and the combination signal. The level profile on which the windowed comparison circuit depends is determined by the controller.

Abstract: A navigation device with power saving mechanism and method thereof are provided. The navigation device includes a global positioning system (GPS) receiver, a first processing unit, a second processing unit and a sound playing unit. The GPS receiver produces a longitude-latitude information by receiving a satellite signal from the GPS. The first processing unit switches from a first mode to a second mode according to a control signal. Then, the first processing unit is disabled after switching. When the second processing unit is enabled, a direction information and a distance information are generated by comparing the longitude-latitude information with a destination information. The sound playing unit selects two frequencies among a plurality of navigation frequencies according to the direction information and the distance information, and plays the tone signals which are comprised of the two frequencies in sequence.

Abstract: A method for browsing video files is provided. By utilizing the method, the end user could preview cover pages and dynamic images of video files on a television monitor simultaneously, and perform a browsing operation and capture a currently displayed image picture to be a cover page of the currently displayed video file through a remote control. Thereby, the user convenience on browsing the video files is improved.

Abstract: A sorting method of multimedia files is disclosed. The method uses EXIF information parameters, image characteristic parameters and file property parameters to automatically sort massive multimedia files. In addition, a sorting mark containing a sorting name, a filename, a date parameter and a file location is displayed on the browsing frame, which is beneficial for a user to conveniently manage and browse the massive multimedia files.

Abstract: A navigation device with power saving mechanism and method thereof are provided. The navigation device includes a global positioning system (GPS) receiver, a first processing unit, a second processing unit and a sound playing unit. The GPS receiver produces a longitude-latitude information by receiving a satellite signal from the GPS. The first processing unit switches from a first mode to a second mode according to a control signal. Then, the first processing unit is disabled after switching. When the second processing unit is enabled, a direction information and a distance information are generated by comparing the longitude-latitude information with a destination information. The sound playing unit selects two frequencies among a plurality of navigation frequencies according to the direction information and the distance information, and plays the tone signals which are comprised of the two frequencies in sequence.