Abstract: A method for playing audio out of a video file includes the following steps. Open a video file stored in a storage unit. Decode the opened video file. Separate the video file into video data and audio data wherein the audio data comprises a plurality of pieces of music data. A starting position and an ending position of each piece of music data is established and recorded by reference to the spectral characteristics. All indexed passages of music data are then playable according to the recorded starting and ending positions. An electronic device using the same is also provided.

Abstract: A method for navigation is provided. The method includes the following steps. Generate a search request in response to manual operations and transmit the search request to a server. Receive a search result list including register users transmitted by the server. Select one or more register users in response to user selection operations. Generate a route inquire message and transmit the message to the server. Receive one or more replies, which transmitted by the electronic device of the selected register user and relayed by the server and display the one or more replies. An electronic device and a system for navigation are also provided.

Abstract: A method for testing an audio player device is provided. The method includes: transcribing sound signals of each of the audio files which are supposed to be supported by the audio player device as a sound file; determining the ID code of each of the sound files; and determining whether the ID code of each of the sound files has been listed on a predetermined audio format table by comparing the ID code of each of the sound files with the ID codes listed on the audio format table, thus to determine which of audio formats listed on the audio format table is supported by the audio player device according to the relationships of the ID codes and the audio formats recorded by the audio format table. A test device applying the method to testing audio player devices is also provided.

Abstract: An LED illuminating device includes a housing including a first open end and a second open end, and a base including an upper base fixed on the first open end and a bottom base held inside the housing. An LED substrate is mounted on the upper base and includes a number of LEDs. A number of first vents are defined in the upper base, and a number of second vents are defined on the second open end of the housing. A space is formed between the lateral wall of the bottom base and the inside wall of the housing, and communicates with the first vents and the second vents.

Abstract: An LED illuminating device comprises a housing with a base plate, a prism sheet and a circuit board. The prism sheet is mounted in the housing and comprises a number of V-shaped micro-grooves formed thereon along two directions intersecting with each other. A plurality of LED units are arranged in groups on the circuit board. Each LED illuminating group comprises three LED units. Each of the LED units emits light of a color different from those of the other two LED units. Four virtual mixed light sources are formed by the reflection of the prism sheet to the circuit board when the light emitted by a particular LED unit mixes with light emitted by adjacent LED units on the circuit board. Each of the virtual mixed light sources forms a desired color different from the colors of the light emitted from the LED units.

Abstract: An LED illuminating device comprises a housing with a base plate, a prism sheet and a circuit board. The prism sheet is mounted in the housing and comprises a number of V-shaped micro-grooves formed thereon along four directions intersecting with each other. The circuit board is fixed on the base plate, wherein a plurality of LED units is arranged on the circuit board. Each two adjacent LED units are spaced a preset distance and emit light of different colors. Eight virtual mixed light sources are formed by reflection of the prism sheet to the circuit board when the light emitted by one of the LED units mixes with light emitted from adjacent LED units on the circuit board. Each of the virtual mixed light sources has a color different from the colors of the light emitted from the LED units.

Abstract: A method for automatically testing display device. The method includes steps of: capturing an image; acquiring a horizontal strip of a to-be-tested image which includes at least a portion of each of the color interval column of the image; comparing a standard deviation A of RGB values of pixels in a vertical sample with a standard deviation B of RGB values of pixels an adjacent vertical sample to obtain samples of each color interval from many samples taken; taking pixels from many vertical samples of each color interval to calculate a mean value of the RGB values of each color interval respectively, determining a color corresponding to each of color intervals, and determining an interval sequence of the to-be-tested image and the code sequence of the color intervals; and determining an image format corresponding to the code sequence according to the image format table which records a plurality of image formats corresponding to the interval sequences of the color intervals of the images.

Abstract: A positioning measurement method is provided. The method includes the step of: capturing images of a standard object and to-be-measured objects; selecting one or more standard points from the image of the standard object; selecting a general location area and a standard area by taking each standard point as a reference point; generating a script for recording positions of each general location area and capturing a standard image in each standard area; storing the script into the data storage; determining the position of the general location area on the image of the to-be-measured object according to the position of general location area recorded in the script; and determining a measurement area, the image in the measurement area is most similar to the standard image within the general location area.

Abstract: A method for testing an audio player device is provided. The method includes: transcribing sound signals of each of the audio files which are supposed to be supported by the audio player device as a sound file; determining the ID code of each of the sound files; and determining whether the ID code of each of the sound files has been listed on a predetermined audio format table by comparing the ID code of each of the sound files with the ID codes listed on the audio format table, thus to determine which of audio formats listed on the audio format table is supported by the audio player device according to the relationships of the ID codes and the audio formats recorded by the audio format table. A test device applying the method to testing audio player devices is also provided.

Abstract: A method for automatically testing display device. The method includes steps of: capturing an image; acquiring a horizontal strip of a to-be-tested image which includes at least a portion of each of the color interval column of the image; comparing a standard deviation A of RGB values of pixels in a vertical sample with a standard deviation B of RGB values of pixels an adjacent vertical sample to obtain samples of each color interval from many samples taken; taking pixels from many vertical samples of each color interval to calculate a mean value of the RGB values of each color interval respectively, determining a color corresponding to each of color intervals, and determining an interval sequence of the to-be-tested image and the code sequence of the color intervals; and determining an image format corresponding to the code sequence according to the image format table which records a plurality of image formats corresponding to the interval sequences of the color intervals of the images.

Abstract: A positioning measurement method is provided. The method includes the step of: capturing images of a standard object and to-be-measured objects; selecting one or more standard points from the image of the standard object; selecting a general location area and a standard area by taking each standard point as a reference point; generating a script for recording positions of each general location area and capturing a standard image in each standard area; storing the script into the data storage; determining the position of the general location area on the image of the to-be-measured object according to the position of general location area recorded in the script; and determining a measurement area, the image in the measurement area is most similar to the standard image within the general location area.