1. Field of the Invention
The present invention relates to a multimedia device for generating different media files, and more particularly to a multimedia device that generates media files, each of which has a specific geographic information and a method of playing the media files with the geographic information.
2. Description of Related Art
As the electrical technology develops quickly, many electrical devices are made in small scale for portable. In addition, the semiconductor technology and data compressing technology quickly develop as well, so the more electrical devices are further made in small size.
In addition, many conventional analog electronic devices have been replaced by digital electronic devices. For example, a conventional camera uses films to extract and keep picture but the films do not recycle. The digital camera uses memory card to store the picture. Since the memory card provides large data capacity, the digital camera also has a taking video capability.
Based on the foregoing description, it is possible to integrate various functions in a digital device, such as an audio recording function and/or audio and video recording and playing function. Therefore, if the digital device has more functions, a value of the digital device is higher.
The main objective of the present invention is to provide a multimedia device that generates media files and each of which has its geographic information. The present invention is also to provide a method of playing media file with geographic information.
Since the multimedia device has a globe positioning system (GPS) receiving unit, the corresponding geographic information is obtained and then the media data and the corresponding geographic information are processed to one media file. Therefore, the playing method uses the geographic information of the media files from the multimedia device to manage and play the media files having same geographic information.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The media signal extracting unit (11) is used to extract analog media signal including audio signal and/or video signal and then converts the analog media signal to media data. In the first embodiment, the media signal extracting unit (11) has a microphone (111) and an analog to digital converter (ADC) (112) electronically connected to the microphone (111) and converting the audio signal from the microphone to digital audio signal. With further reference to
The GPS receiving unit (14) is used to receive satellite signals including geographical information. The GPS receiving unit (14) outputs the geographical coordinates and times. The geographical information at least has geographical coordinate and time.
The digital processing unit (15) is electronically connected to the ADC (112) of the media signal extracting unit (11) and the GPS receiving unit (14) to obtain the media data and the geographical information. The digital processing unit (15) processes the media data and the corresponding geographical information and then generates a media file. Therefore, the media file has the media data and the geographical information.
The memory unit (16) is electronically connected to the digital processing unit (15) to store the media data and the geographical coordinates and times of the geographical information. The geographical coordinates and times may be stored in a property column of the corresponding digital file.
The media file output unit (12) is electronically connected to the digital processing unit (15) to output the media file. The media file may be a digital audio format (ex: xxx.mp3), a digital image format (ex: xxx.jpg) or a digital audio and video format (ex: xxx.avi). The media file output unit (12) may be a computer connector (such as an USB port, an RJ45 or RS-232) or a wireless computer connector (such as an IR communicating port, a bluetooth communicating port).
The media file playing unit (17) is electronically connected to the digital processing unit (15), so the digital processing unit (15) controls the media file playing unit (17) to play the media files. In the first embodiment, the media file playing unit (17) has a speaker (171) and a digital to analog converter (DAC) (172) electronically connected between the speaker (171) and the digital processing unit (15). Therefore, the first embodiment of the multimedia device is used as a MP3 player. With further reference to
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(a) determining whether the media signal extracting unit outputs the media data (40), wherein if a determined result is negative, the step (a) is executed continually until the media data is output, but if the determined result is positive, go to a next step;
(b) obtaining a present geographical information including geographical coordinate and a present time from the GPS receiving unit (41); and
(c) storing the present geographical information coordinate, the present time and the media data in the corresponding addresses of the memory unit (42).
In the step (c), the present geographical coordinate and the present time may be stored in a property column of the media data, so another specific file format is not required to package the present geographical coordinate and the present time. Therefore, the computer downloads the media files and the corresponding the geographical coordinates and the times at the same time.
Based on the foregoing description, the present invention provides a multimedia device to generate media files with the corresponding geographical coordinates and times. Further, the playing method in accordance with the present invention uses the media files with the corresponding geographical coordinates and times to manage media files effectively and play media files in sequence according to the same geographical coordinate. Therefore, the user easily to recollect the past happened at a specific site.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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097109048 | Mar 2008 | TW | national |