BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a schematic configuration of an application of method in accordance with the present invention;
FIG. 2A shows a television with an auxiliary antenna used in the method of the present invention;
FIG. 2B is a perspective view of the auxiliary antenna in accordance with the present invention;
FIG. 3 is a block diagram of a first preferred embodiment of a wireless transmission device in accordance with the present invention;
FIG. 4 is a block diagram of a second preferred embodiment of a wireless transmission device in accordance with the present invention;
FIG. 5A is a block diagram of a third preferred embodiment of a wireless transmission device in accordance with the present invention;
FIG. 5B is a block diagram of a fourth preferred embodiment of a wireless transmission device of the present invention;
FIG. 6A is a block diagram of a fifth preferred embodiment of a wireless transmission device in accordance with the present invention; and
FIG. 6B is a block diagram of a sixth preferred embodiment of a wireless transmission device in accordance with the present invention.
DETAILED DESCRIPTION OF THE INVENTION
A wireless transmission method for electronic apparatuses to transmit audio and visual signals to a television of the present invention includes steps as follows.
With reference to FIG. 1, audio and visual signals that electronic apparatuses (10) such as a mobile phone, a digital camera, a videodisc player, a digital photo frame, a laptop or a desktop desire to play are modulated.
The modulated audio and visual signals are then transformed to television carrier signals via a low-power television signals wireless transmitter. A distance between the electronic apparatuses (10) and the television (20) is very short, thereby the television carrier signals are sent to a television (20).
The transmitted carrier signals go through the television (20) to a tuner (21) inside the television (20). The television (20) then can direct play the audio and visual signals of the electronic apparatuses (10) when the television (20) is tuned to a setting frequency of the present invention. In this way, the transmission method of the present invention does not need signal transmission lines between the electronic apparatuses and the television.
With reference to FIG. 2A and FIG. 2B, the method of the present invention can be implemented by further adding an auxiliary antenna (22) installed on an antenna input cable of a television (20). The auxiliary antenna (22) includes a cable configured with a metal extending part (221) having two sides that are in and out ends to be coupled to a television antenna. The perpendicular metal extending part (221) of the auxiliary antenna (22) forms as an indoor antenna, so as to increase reception strength of the television (20) for enhancing reception of the audio and visual signals sent by the present invention.
With further reference to FIG. 3, a first preferred embodiment of a wireless transmission device (30) for the electronic apparatus to transmit audio and visual signals to a television of the present invention is applied to electronic apparatus (10) such as a mobile phone, a digital camera, a videodisc player, or a digital photo frame. The wireless transmission device (30) is combined in the electronic apparatus (10). By installing the wireless transmission device (30) of the present invention to the electronic apparatuses (10), the audio and visual signals that the electronic apparatuses (10) desire to play are transmitted to a CRT television (20′) to play. The wireless transmission device (30) includes a modulation module (31) and a wireless transmission module (32) inside the wireless transmission device (30) and connected to the modulation module (31).
The modulation module (31) is used to transform the audio and visual signals of the electronic apparatus (10) to a format suitable to be transmitted by a transmission media. In this preferred embodiment, an analog modulator is used.
The wireless transmission module (32) is coupled to the modulation module (31) for transmitting the modulated audio and visual signals. In this preferred embodiment, an ultrahigh frequency (UHF) transmitter is used.
With reference to FIG. 4, a second preferred embodiment of a wireless transmission device (30a) of the present invention is approximately similar to the wireless transmission device in the first preferred embodiment. The difference is that the wireless transmission device (30a) is used to transmit audio and visual signals to be played to a digital transmitter of a digital television (20″). Hence the wireless transmission device (30a) adds an encoding module (33) and a converter module (34) in comparison with the wireless transmission device of the first preferred embodiment. The converter module (34) is coupled between the modulation module (31) and the encoding module (33).
The modulation module (31) uses an orthogonal frequency division multiplexing (OFDM) modulator. The encoding module (33) is used to convert the audio and visual signals to digital data. In this preferred embodiment, an Mpeg-2 (motion picture experts group) encoder is used. The converter module (34) is used to convert the digital data to a standard digital data of a digital television broadcast system. In this preferred embodiment, the digital data is converted to the standard digital data of a DVB-T (Digital Video Broadcasting-terrestrial).
With reference to FIG. 5A, a third preferred embodiment of a wireless transmission device (30b) of the present invention is approximately similar to the wireless transmission device in the first preferred embodiment. The wireless transmission device (30b) can be made to an independent product separated from the electronic apparatus (10).
The difference is that the wireless transmission device (30b) of this preferred embodiment adds a VGA connector interface (35) in comparison with the wireless transmission device of the first preferred embodiments, so as to construct an independent wireless transmitter. The VGA connector interface (35) is used for coupling with an analog signal output terminal of a laptop or desktop for example.
With reference to FIG. 5B, a fourth preferred embodiment of a wireless transmission device (30c) of the present invention is approximately similar to the wireless transmission device in the second preferred embodiment. The difference is that the wireless transmission device (30c) of this preferred embodiment adds a VGA connector interface (35) in comparison with the wireless transmission device of the second preferred embodiments, so as to construct an independent wireless transmitter. The VGA connector interface (35) is used for coupling with an analog signal output terminal of a laptop or desktop for example.
Furthermore, FIG. 5A and FIG. 5B respectively show an analog circuit and a digital circuit of the wireless transmission device 30 of the present invention.
With reference to FIG. 6A and FIG. 6B, a fifth and a sixth preferred embodiment of a wireless transmission device (30d, 30e) of the present invention is approximately similar to the wireless transmission device in the third and the fourth preferred embodiment. The difference is that the wireless transmission device (30d, 30e) of this preferred embodiment uses an USB or DVI connector interface (35a) instead of the VGA connector interface (35) for receiving USB type or DVI type audio and visual data. Since the USB type or DVI type audio and visual data is of digital data, in order to receive and send the digital data, the fifth and the sixth preferred embodiment is somewhat different from the third and the fourth preferred embodiment. In addition, since the fifth embodiment is applied to the CRT television and the USB type or DVI type audio and visual data is of digital data, the fifth embodiment further uses a decoding module (33a). The decoding module (33a) connected between the USB connector interface (35a) and the wireless transmission module (32) decodes the USB type audio and visual data.
It can be clearly understood from the above description that the wireless transmission method for the electronic apparatuses and device thereof of the present invention can apply to general electronic apparatuses to transmit the audio and visual signals to the television to play without using the conventional audio and video connectors. The low-power television signals wireless transmitter transforms the modulated audio and visual signals to the television carrier signals. Then the television carrier signals are sent to the television with the very short distance between the electronic apparatuses and the television. The transmitted carrier signals can go through the television to a tuner inside the television. The television then can direct play the audio and visual signals of the electronic apparatuses when the television is tuned to the setting frequency of the present invention. Moreover, the external connected auxiliary antenna installed on the television can enhance the reception of the audio and visual signals sent by the present invention. Therefore the present invention indeed includes features of good utility and unobviousness to meet the requirements of a patent.
While the invention has been described by way of example and in terms of a preferred embodiment, it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.
Patent Application
20080022326
