BRIEF DESCRIPTION OF THE APPENDED DRAWINGS
FIG. 1A is a function block diagram illustrating a displaying system 1 according to a preferred embodiment of the invention in which a signal S is inputted at a first bi-directional port 13 of the displaying system 1.
FIG. 1B is a function block diagram also illustrating the displaying system 1 according to the preferred embodiment of the invention in which the signal S is inputted at a second bi-directional port 14 of the displaying system 1.
FIG. 2 is a function block diagram illustrating a displaying system 1, according to another preferred embodiment of the invention, which further includes a signal adjusting device 16.
FIG. 3 is a flow chart showing a signal transmitting method according to a preferred embodiment of the invention.
FIG. 4 is a schematic diagram illustrating a practical application according to the displaying system of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1A and FIG. 1B, FIG. 1A and FIG. 1B are function block diagrams illustrating the displaying system 1 according to a preferred embodiment of the invention. FIG. 1A is a function block diagram in which a signal S is inputted at a first bi-directional port 13. FIG. 1B is a function block diagram in which a signal S is inputted at a second bi-directional port 14. The displaying system 1 includes the first bi-directional port 13, the second bi-directional port 14, a first switch device 11, a second switch device 12, and a signal processing device 15. The first switch device 11 has a first terminal 112 coupled to the first bi-directional 13, a second terminal 114 coupled to the second bi-directional 14, a third terminal 116, and a first control terminal, which is not shown in FIG. 1A and FIG. 1B. The connection between the first terminal 112 and the third terminal 116 or between the second terminal 114 and the third terminal 116 is enabled by controlling the first control terminal. The second switch device 12 has a fourth terminal 122 coupled to the first bi-directional port 13, a fifth terminal 124 coupled to the second bi-directional port 14, a sixth terminal 126 coupled to the third terminal 116 of the first switch device 11, and a second control terminal, which is not shown in FIG. 1A and FIG. 1B. The connection between the fourth terminal 122 and the sixth terminal 126 or between the fifth terminal 124 and the sixth terminal 126 is enabled by controlling the second control terminal. The signal processing device 15 is coupled to the third terminal 116. The signal processing device 15 processes the signal S for the displaying system 1 to display the signal S processed by the signal processing device 15.
As shown in FIG. 1A, when the signal S is inputted at the first bi-directional port 13, by controlling the first control terminal to enable the connection between the first terminal 112 and the third terminal 116 and controlling the second control terminal to enable the connection between the fifth terminal 124 and the sixth terminal 126, the signal S is transmitted through the first terminal 112 and the third terminal 116 to the signal processing device 15; furthermore, the signal S is transmitted through the first terminal 112, the third terminal 116, the sixth terminal 126, and the fifth terminal 124 to the second bi-directional port 14 to be outputted. As shown in FIG. 1B, when the signal S is inputted at the second bi-directional port 14, by controlling the first control terminal to enable the connection between the second terminal 114 and the third terminal 116 and controlling the second control terminal to enable the connection between the fourth terminal 122 and the sixth terminal 126, the signal S is transmitted through the second terminal 114 and the third terminal 116 to the signal processing device 15; furthermore, the signal S is transmitted through the second terminal 114, the third terminal 116, the sixth terminal 126, and the fourth terminal 122 to the first bi-directional port 13 to be outputted.
Referring to FIG. 2, FIG. 2 is a function block diagram illustrating a displaying system 1, according to another preferred embodiment of the invention. The displaying system 1 further includes a signal adjusting device 16, which has an input terminal 162 coupled to the third terminal 116 of the first switch 11 and an output terminal 164 coupled to the sixth terminal 126 of the second switch 12. The signal adjusting device 16 adjusts the signal S transmitted from the first bi-directional port 13 to the second bi-directional 14 or transmitted from the second bi-directional port 14 to the first bi-directional 13. The signal adjusting device 16 could enhance the decayed signal S or filter the noise within the signal S. When the signal S is inputted at the first bi-directional port 13 and outputted at the second bi-directional port 14, the signal S inputted at the first bi-directional port 13 is directly transmitted to the signal processing device 15. However, the signal S is first adjusted by the signal adjusting device 16 before being transmitted to the second bi-directional port 14, so as to solve the signal decay and other problems possibly induced during the transmission. Similarly, when the signal S is inputted at the second bi-directional port 14 and outputted at the first bi-directional port 13, the signal S inputted at the second bi-directional port 14 is directly transmitted to the signal processing device 15. However, the signal S is first adjusted by the signal adjusting device 16 before being transmitted to the first bi-directional port 13, so as to solve the signal decay and other problems possibly induced during the transmission.
Referring to FIG. 3 together with FIG. 1A and FIG. 1B, FIG. 3 is a flow chart showing a signal transmitting method according to a preferred embodiment of the invention. The signal transmitting method, according to the invention, transmits a signal S inputted at the first bi-directional port 13 of a displaying system 1 to a second bi-directional port 14 of the displaying system 1 or transmits the signal S inputted at the second bi-directional port 14 of the displaying system 1 to the first bi-directional port 13 of the displaying system 1. Meanwhile, the signal S is transmitted to a signal processing device 15 for the displaying system to display the signal S processed by the signal processing device 15. According to the above preferred embodiment, the signal transmitting method of the invention is described as follows.
According to the signal transmitting method, as shown in step S100 of FIG. 3, a first switch device 11 is provided first. The first switch device 11 has a first terminal 112 coupled to the first bi-directional port 13, a second terminal 114 coupled to the second bi-directional port 14, a third terminal 116 coupled to the signal processing device 15, and a first control terminal, which is not shown in FIG. 1A, FIG. 1B, and FIG. 2. The first control terminal is used to enable the connection between the first terminal 112 and the third terminal 116 or between the second terminal 114 and the third terminal 116. Furthermore, a second switch device 12 is also provided. The second switch device 12 has a fourth terminal 122 coupled to the first bi-directional port 13, a fifth terminal 124 coupled to the second bi-directional port 14, a sixth terminal 126 coupled to the third terminal 116 of the first switch device 11, and a second control terminal, which is not shown in FIG. 1A, FIG. 1B, and FIG. 2. The second control terminal is used to enable the connection between the fourth terminal 122 and the sixth terminal 126 or between the fifth terminal 124 and the sixth terminal 126, as shown in step S102 of FIG. 3.
According the signal transmitting method, the signal S can be inputted at the first bi-directional port 13 and transmitted to the second bi-directional port 14 to be outputted, or inputted at the second bi-directional port 14 and transmitted to the first bi-directional port 13 to be outputted, both of which make different switch paths, as shown in step S104 of FIG. 3. As shown in step S106a of FIG. 3, when the signal S is inputted at the first bi-directional device 13, by controlling the first control terminal to enable the connection between the first terminal 112 and the third terminal 116 and controlling the second control terminal to enable the connection between the fifth terminal 124 and the sixth terminal 126, the signal S is transmitted through the first terminal 112 and the third terminal 116 to the signal processing device 15; furthermore, the signal S is transmitted through the first terminal 112, the third terminal 116, the sixth terminal 126, and the fifth terminal 124 to the second bi-directional port 14 to be outputted, as shown in FIG. 1A. After the signal S is outputted at the second bi-directional port 14, the signal S may be further transmitted to other displaying systems.
Similarly, as shown in step S106b of FIG. 3, when the signal S is inputted at the second bi-directional port 14, by controlling the first control terminal to enable the connection between the second terminal 114 and the third terminal 116 and controlling the second control terminal to enable the connection between the fourth terminal 122 and the sixth terminal 126, the signal S is transmitted through the second terminal 114 and the third terminal 116 to the signal processing device 15; furthermore, the signal S is transmitted through the second terminal 114, the third terminal 116, the sixth terminal 126, and the fourth terminal 122 to the first bi-directional port 13 to be outputted, as shown in FIG. 1B. After the signal S is outputted at the first bi-directional port 13, the signal S may be further transmitted to other displaying systems.
In addition, the signal S, which is transmitted from the first bi-directional port 13 to the second bi-directional port 14 or from the second bi-directional port 14 to the first bi-directional port 13, could be adjusted to enhance the quality of the signal S, as shown in step S108 of FIG. 3. The adjustment of the signal could enhance the decayed signal S or filter the noise within the signal S.
Therefore, the signal S inputted at the first bi-directional port 13 is not only transmitted to the signal processing device 15 for displaying but also transmitted to the second bi-directional port 14 for other displaying systems as a signal source, so as to fulfill a signal-distributing function, and vice versa.
According to the preferred embodiment of the invention, the signal S could be a digital signal or an analog signal. The first bi-directional port 13 and the second bi-direction port 14 both comply with a DVI-I specification, a DVI-D specification, or a D-sub specification. Besides, when the first bi-directional port 13 and the second bi-directional port 14 are both inputted with signals, by controlling the first control terminal and the second control terminal, the second switch device 12 will be disabled, and the first switch device 11 will be treated as a general switch to select one of the signals.
Therefore, according to the displaying system of the invention, not only are the signal ports of the displaying system bi-directional, but the displaying system could also output an input signal to provide a distributor function by transmitting the input signal as described above. In actual application, stringing several displaying systems together according to the invention could arrive at the same effect as using a distributor according to the prior art, but the cost of the configuration and the difficulty of the management could be effectively reduced, as shown in FIG. 4.
With the recitations of the preferred embodiment above, the features and spirits of the invention will be hopefully well described. However, the scope of the invention is not restricted by the preferred embodiment disclosed above. The objective is that all alternative and equivalent arrangements are hopefully covered in the scope of the appended claims of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.
Patent Application
20070237165
