Patent Application
20140153738
This application claims the priority benefit of Chinese Patent Application Filing Serial Number CN 201220656627.9, the disclosure of which is herein incorporated by reference in its entirety.
The present disclosure relates to the art of electronic devices and, particularly to a wireless induction system for producing audio according to induced wireless electromagnetic signal.
With the rapid development of technologies, the design of electronic devices, such as computer, cellular phones, PDAs (personal digital assistants), and so on, is being driven by the marketplace towards providing more and more multimedia functions.
The foregoing electronic devices generally include an audio module. The audio module is typically accommodated within the electronic device. If or when the audio module becomes dysfunctional, the electronic device must be discarded or need to be disassembled to replace the audio module. This may be expensive. Typically, it is unavoidable that the electronic devices have a proper wire cable for transmitting or receiving electrical signals. In order to obtain or amplify loud sound generated or produced by the electronic device, the audio module is electrically connected with an exterior audio speaker via the cable. In some other instances, the audio module is positioned on a dock with a plurality of conductive points thereof electrically connected with the dock for transmitting the audio signals to the dock and playing sounds by the speakers built in the dock. However, it is inconvenient to use a long cable that may tangle together or to use a short cable that does not fit the actual need.
Therefore, it is desirable to provide an improved wireless induction system which can overcome the above-mentioned problems.
Many aspects of the embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Reference will now be made to describe the exemplary embodiments of the present disclosure in detail.
Referring to
The second device 200 is preferably placed within a reception range of the electromagnetic signal that will be receiving the electromagnetic signal.
Generally, the second device 200 includes a receiving unit 21 having a second induction coil 210, a first processor 22 and a loudspeaker 23. The second induction coil 210 is adapted to induce corresponding to the electromagnetic signal from the first device 100 and generate an audio signal. The first processor 22 is electrically connected between the receiving unit 21 and the loudspeaker 23, configured for processing the audio signal received and transmitted by the second induction coil 210. Optionally, the first processor 22 includes a frequency divider 221 and an amplifier 222 coupler to the frequency divider 221. The amplifier 222 is an electronic amplifier that amplifies low-power audio signals to a level suitable for driving the loudspeaker 23, which is a typical audio playback chain.
Referring to
The second device 200′ includes a receiving unit 21′ having a second induction coil 210′, a second processor 22′ and a loudspeaker 23′. In the embodiment, the second processor 22′ has an amplifier 222′. While the second device 200′ approaches to the first induction coil 131, the second induction coil 210′ detects and induces a current corresponding to the electromagnetic waves. The second processor 22′ processes the induced current and amplifies it for transmitting to the loudspeaker 23′.
In the present disclosure, when the speaker 14′ of the first device becomes dysfunctional, a user can easily provides one second device close to approach the first device within the reception range of the electromagnetic signal. An electromagnetic signal will be generated by the first induction coil of the first device. A current is induced in the second induction coil of the second device corresponding to the electromagnetic signal. The processor processes the induced current and converts it into audio signals. The audio signals are receiver by the loudspeaker of the second device as so to produce a sound. It is very convenient.
In each of the embodiments described above, a frequency divider is used, either used in the first device, or used in the second device. It is, however, an optional component to precisely transfer audible signals. In alternative instances, the first device may comprise a frequency divider for dividing the audible signals from the signal source into audio signal branches with different frequency ranges. Each of the audio signal branches is transmitted to the second device by a corresponding induction coil in the first device. Accordingly, the second device comprises a plurality of second induction coils for receiving corresponding audio signal branch, and for transmitting the audio signal branches to corresponding loudspeakers.
Alternatively, the frequency divider may be built in the second device. While the second induction coil in the second device receives the audible signals from the first device, the frequency divider in the second device divides the signals into audio signal branches with different frequency ranges. Apparently, the second device should comprise a plurality of loudspeakers corresponding to the different audio signal branches.
While the present invention has been described with reference to specific embodiments, the description of the invention is illustrative and is not to be construed as limiting the invention. Various of modifications to the present invention can be made to the exemplary embodiments by those skilled in the art without departing from the true spirit and scope of the invention as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201220656627.9 | Dec 2012 | CN | national |
