Abstract: An operating method for an electrical device is provided. The electrical device has a display screen. The operating method includes the following steps. First, at least one sound track is provided, wherein the at least one sound track is individually associated with at least one sound source. Then, a user interface (UI) is displayed on the display screen, wherein the UI displays the at least one sound track and at least one indicator corresponding to the at least one sound track, so that the at least one sound track can be edited through the UI. The at least one indicator is configured to indicate the at least one sound source individually.

Abstract: The invention discloses a method, an electronic apparatus, and a computer readable medium for retrieving a map. The method includes the following steps. Firstly, a picture of a printed map is obtained. A block area surrounded by a road outline in the picture is defined. A map service is queried to find an electronic map having a map area corresponding to the block area according to contents of the printed map. A plurality of 3-D models of a plurality of buildings located in the map area is retrieved. The 3-D models are mapped on the picture.

Abstract: A method for recognizing a printed map and an electronic apparatus using the same are provided. The method comprises the following steps. First, a picture of the printed map is obtained, and a block area surrounded by a road outline in the picture is defined. Next, at least one road name related to the road outline is recognized, and a map service is queried with the at least one recognized road name to find an electronic map having a map area corresponded to the block area in the map service. Afterwards, the block area in the picture is mapped to the map area in the map service.

Abstract: A head light or a fog light for automobiles and automobiles includes a housing provided therein with an optically reflecting surface and a heat-dissipating member that is formed with LED grooves for receiving LEDs therein. The LEDs are installed for an angle to enable the light of the LEDs to be directly irradiated on the optically reflecting surface in a certain angle and simultaneously, the light will be reflected by the optically reflecting surface and cast out through the transparent front lampshade. Thus, the light produced by the LEDs can be utilized to a maximum extent, able to enhance lighting effect of the LEDs.

Abstract: A head light or a fog light for automobiles and automobiles includes a housing provided therein with an optically reflecting surface and a heat-dissipating member that is formed with LED grooves for receiving LEDs therein. The LEDs are installed for an angle to enable the light of the LEDs to be directly irradiated on the optically reflecting surface in a certain angle and simultaneously, the light will be reflected by the optically reflecting surface and cast out through the transparent front lampshade. Thus, the light produced by the LEDs can be utilized to a maximum extent, able to enhance lighting effect of the LEDs.