Abstract: A print control module for a thermal printer includes a housing, a transmission device, a first driving mechanism, a second driving mechanism, and a power switching mechanism all installed in the housing. The transmission device includes a motor, and a transmission gears set for transmitting power of the motor. When the motor rotates in a first direction, the power switching mechanism transfers power of the motor to the first driving mechanism, and when the motor rotates in a direction opposite to the first direction, the power switching mechanism fixes the first driving mechanism and transfers power of the motor to the second driving mechanism.

Abstract: A flat panel display mounting device for securing a flat panel display, such as an LCD or plasma television, to a support surface, such as a wall, is disclosed. The flat panel display mounting device comprises a plurality of members in the form of support panels pivotally connected together and a rotation control mechanism connected thereto so that the flat panel display mounted on the device can be rotated to a desired angle and the center of gravity of the flat panel display during rotation can be maintained as close to the support surface as possible, so as not to generate additional burden to the flat panel display mounting device.

Abstract: The present invention discloses a variable valve actuation mechanism, characterized in that movement of a sliding block is controlled for selectively receiving a driving force exerted from an actuating mechanism so as to control lift, such as higher or lower lift, of valves disposed in a combustion engine. With the design disclosed in the present invention, a conventional problem due to misalignment of the channel for locking pin sliding during changing lift of valve is capable of being solved. In the preferred embodiment of the present invention, actuating parts for controlling higher valve lift will not contact with the variable valve actuation mechanism while the valve is under lower lift so that the combustion engine will be operated in an appropriate rotation speed efficiently so as to reduce fuel consumption.

Abstract: A print control module for a thermal printer includes a housing, a transmission device, a first driving mechanism, a second driving mechanism, and a power switching mechanism all installed in the housing. The transmission device includes a motor, and a transmission gears set for transmitting power of the motor. When the motor rotates in a first direction, the power switching mechanism transfers power of the motor to the first driving mechanism, and when the motor rotates in a direction opposite to the first direction, the power switching mechanism fixes the first driving mechanism and transfers power of the motor to the second driving mechanism.

Abstract: An RF transceiver. The RF transceiver comprises a temperature sensor and a first variable gain amplifier (VGA). The temperature sensor has an input node receiving an input voltage from a base band processor and an output node providing an output voltage. The first VGA is coupled to the first temperature sensor wherein a gain thereof is controlled by the output voltage.

Abstract: A multiple-frequency antenna includes a circuit board of dielectric material having a first surface and a second surface which is spaced apart from and is substantially parallel to the first surface, a ground plane layer of electrically conductive material covering a portion of the first surface of the circuit board, and a feed-line of electrically conductive material disposed on the second surface of the circuit board so as to extend over the ground plane layer. A first radiating element of electrically conductive material is disposed on the circuit board and electrically connected to the feed-line. A second radiating element of electrically conductive material is disposed on the circuit board in close proximity to the first radiating element for coupling with the first radiating element, the coupling providing an electromagnetic feed to the second radiating element.

Abstract: A treadbase lifting mechanism is disclosed to include a framework with a treadbase above on it, a plank balanced on a fulcrum at the framework having one end pivoted to the an end of the treadbase, a driving mechanism, a sprocket pivotally mounted in the framework, and a chain meshed with the sprocket and connected between the driving mechanism and the other end of the plank for driving by the driving mechanism to turn the plank and to further lift the treadbase to the desired tilted position.

Abstract: A wireless transceiving module includes an antenna, a signal processing unit and a shielding case. The antenna is used for transceiving an RF signal, and has a signal point. The signal processing unit is coupled to the signal point for processing the RF signal, and has an RF circuit coupled to the antenna and a baseband circuit for converting a first baseband signal into a first RF signal and for converting a second RF signal into a second baseband signal. The shielding case is used for electromagnetically shielding the signal processing unit, and the shielding case acts as a ground plane for the antenna.

Abstract: A multiple-frequency antenna includes a circuit board of dielectric material having a first surface and a second surface which is spaced apart from and is substantially parallel to the first surface, a ground plane layer of electrically conductive material covering a portion of the first surface of the circuit board, and a feed-line of electrically conductive material disposed on the second surface of the circuit board so as to extend over the ground plane layer. A first radiating element of electrically conductive material is disposed on the circuit board and electrically connected to the feed-line. A second radiating element of electrically conductive material is disposed on the circuit board in close proximity to the first radiating element for coupling with the first radiating element, the coupling providing an electromagnetic feed to the second radiating element.

Abstract: The present invention discloses a printed antenna structure. The printed antenna structure comprises: a dielectric layer having opposed surfaces, a ground plane layer covered on the first surface of the dielectric layer, a feed-line extending over the second surface of the dielectric layer and connecting to a driving circuitry, a primary radiating element connected to the feed-line and not extending over to the ground plane layer, and a tuning element connected to the primary radiating element and not extending over to the ground plane layer for adjusting the radiating frequency. The timing element her comprises two stubs each having a free end spaced apart from each other and a fixed end connected to the primary radiating element so as to reduce the overall length of the printed antenna.

Abstract: A multiple-frequency antenna includes a circuit board of dielectric material having a first surface and a second surface which is spaced apart from and is substantially parallel to the first surface, a ground plane layer of electrically conductive material covering a portion of the first surface of the circuit board, and a feed-line of electrically conductive material disposed on the second surface of the circuit board so as to extend over the ground plane layer. A first radiating element of electrically conductive material is disposed on the circuit board and electrically connected to the feedline. A second radiating element of electrically conductive material is disposed on the circuit board in close proximity to the first radiating element for coupling with the first radiating element, the coupling providing an electromagnetic feed to the second radiating element.

Abstract: A multiple-frequency antenna includes a feed-line and a first radiating element electrically connected to the feed-line. A tuning element is electrically connected to the first radiating element. The tuning element contains at least two stubs, each stub having a fixed end connected to the first radiating element and a free end spaced apart from each other. The first radiating element and the tuning element serve to generate a first and a third operating frequency of the multiple-frequency antenna. The antenna also includes a second radiating element electrically connected to the feed-line, the second radiating element serving to generate a second operating frequency of the multiple-frequency antenna.

Abstract: A superheterodyne transceiver. In the superheterodyne transceiver of the present invention, a front end circuit has a differential pair to output a differential signal. A transformer has a primary side with a tap coupled to ground, two input terminals to receive the differential signal, and a secondary side with an output. A surface acoustic wave filter has an input terminal coupled to the output terminal of the secondary side of the transformer.

Abstract: The present invention discloses a printed antenna structure. The printed antenna structure comprises: a dielectric layer having opposed surfaces, a ground plane layer covered on the first surface of the dielectric layer, a feed-line extending over the second surface of the dielectric layer and connecting to a driving circuitry, a primary radiating element connected to the feed-line and not extending over to the ground plane layer, and a tuning element connected to the primary radiating element and not extending over to the ground plane layer for adjusting the radiating frequency. The timing element her comprises two stubs each having a free end spaced apart from each other and a fixed end connected to the primary radiating element so as to reduce the overall length of the printed antenna.