A choke signal-adjusting device, and more particularly, a signal-adjusting device capable of increasing the high-frequency signal transmission quality, comprises a circuit board disposed in a connector, a plurality of transmission circuits being disposed on the circuit board, one side of the transmission circuit being taken as a signal input terminal, and another thereof being taken as an input terminal; it is characterized in that: a plurality of chokes are correspondingly disposed in series in the middle of the plurality of transmission circuits; whereby, the balance transmission signals of unequal time duration to signals of equal time duration so as to increase the signal transmission quality effectively.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a choke signal-adjusting device, the structure design thereof is compact and practical, capable of adjusting balance transmission signals of unequal time duration into signals of equal time duration so as to increase the transmission quality.

2. Description of Related Art

The use range of a connector is very large; it is an important bridge for connecting circuits and signals, and an important element for maintaining the normal and stable function of an electronic product. Accompanying the continuous development of electronic products toward lightness, thinness, shortness and smallness, the process capability of an internal system becomes stronger. Recently, structures of new systems such as DVD, HDTV, videophone, video conference, and the like have mostly adopted a complete digitization method to process voice and image information in order to offer users with better quality. The speed of the digital signals transmitted by them is accelerated continuously (the signals may be not compressed). Relatively, it causes the planning and design of the connector to be developed toward “fine interval spacing” and “high frequency”.

However, the high-speed transmission will yield matching impedance, crosstalk, transmission delay, signal attenuation, electromagnetic interference, and the like; they cause the image signals or the voice signals easily to yield noise or disconnection while being played; the result is that the listening and viewing quality is reduced substantially. Further, the important data is easy to be lost during the network communication. These problems must be solved effectively so that the quality of the connector can be increased to match the market requirement.

The circuit board disposed in the internal part of a conventional cable connector only has a general simply-planned transmission circuit as shown inFIG. 1. There is no pre-disposed good signal-adjusting device therein such that the unequal time duration shown in the test result asFIG. 2shows easily happens between two adjacent pins when it is used on high-frequency balance transmission to influence the signal transmission effect seriously; this is the main deficit.

SUMMARY OF THE INVENTION

For improving the conventional connector structure, the present invention proposes a choke signal-adjusting device; the structure design thereof is compact and practical, capable of adjusting balance transmission signals of unequal time duration into signals of equal time duration so as to increase the transmission quality.

For achieving the object mentioned above, the present invention proposes a choke signal-adjusting device, and more particularly, a signal-adjusting device capable of increasing the high-frequency signal transmission quality, comprises a circuit board disposed in a connector, a plurality of transmission circuits being disposed on the circuit board, one side of the transmission circuit being taken as a signal input terminal, and another thereof being taken as an input terminal; it is characterized in that: a plurality of chokes are correspondingly disposed in series in the middle of the plurality of transmission circuits; whereby, the balance transmission signals of unequal time duration to signals of equal time duration so as to increase the signal transmission quality effectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer toFIGS. 3 to 9. A choke signal-adjusting device10according to the present invention includes a circuit board20, and a plurality of transmission circuits21are disposed on the circuit board20, where one side of the transmission circuits21is taken as a signal input terminal22and another side thereof is taken as a signal output terminal23; it is characterized in that a plurality of chokes30are correspondingly disposed in series in the middle of the plurality of transmission circuits21. The plurality of chokes30may be made from common chokes while being put into practice asFIGS. 3 and 4show; the common choke is made by disposing two cross-coupling chokes30in a housing31and projecting four pins32out of the housing31to allow them to be respectively crossed over a preserved position of the two adjacent transmission circuits21.

Please refer toFIGS. 3,4and5. The choke signal-adjusting device10may be assembled onto a cable connector40directly while being manufactured, and a circuit board20is buried into the cable connector40to allow an output terminal23of the transmission circuit21to be electrically connected to an output terminal41of the connector40and an input terminal22at another side of the transmission circuit21to be electrically connected to a cable42. The circuit board20is positioned inside the cable connector40, and an outer cover43made from a plastic material is disposed outside the cable connector40. Further, at least one output terminal44is disposed on one end of the outer cover43.

Furthermore, the choke signal-adjusting device10, asFIGS. 6 and 7show, may also be disposed on a connector adapter50, and the circuit board20is buried into the connector adapter50to allow the output terminal23of the transmission circuit21to be electrically connected to an output terminal51of the connector adapter50, and the input terminal22of the transmission circuit21to be electrically connected to an input terminal52of the connector adapter50.

While being assembled, the connector adapter50includes the aforementioned inbuilt circuit board20, an outer cover53made from a plastic material and at least one output terminal54and input terminal55.

Wherein, the output terminal54and the input terminal55at the two ends of the connector adapter50may be set to the same type, for example, the both are the same male type (or the same female type) shown inFIG. 6, or the both are different types (one is a male type and another one is a female type) shown inFIG. 7, thereby being convenient for a user to do selections for different types of insertion uses, and allowing a general cable connector to have the functions of the signal-adjusting device10of the present invention through the connector adapter50.

Whereby, asFIGS. 3 to 8show, while being put into practice, the output terminal54or44of the connector adapter50or the cable connector40made from the signal-adjusting device10of the present invention may be utilized to connect with a general display device such as liquid crystal television (not shown in the figures) or a signal duplicator such as audio/video facility (not shown in the figures). Whereby, an unequal time duration state happening in the conventional structure originally can be adjusted to an equal time duration state during a high-frequency balance signal transmission because the choke30is correspondingly disposed in series between each two adjacent transmission circuits21disposed on the inbuilt circuit board20of the present invention. The best signal adjustment effect shown inFIG. 9can be obtained after a test.

Thus, it can proves that the signal-adjusting device10of the present invention can have a very good signal adjustment function and is capable of increasing the signal transmission quality effectively to avoid noise or disconnection generated when image signals or voice signals are played in a high-frequency transmission, or important data loss during a network communication.

Conclusively, the structure of the present invention is compact and practical and the functions thereof.