Abstract: An audio jack connector includes an insulating housing, a movable terminal, a fixed terminal, and a conductive ring. The insulating housing has a main body and a cylindrical sleeve, and defines an insertion hole therein for receiving an audio plug. A bottom of the insulating housing defines an opening across a junction of the main body and the sleeve and communicating with the insertion hole. The movable terminal has an elastic arm projected into the insertion hole from the opening. The fixed terminal has a contact arm attached to an outer periphery of the sleeve. The conductive ring encircles the sleeve with the contact arm against an inner side thereof. The movable terminal is electrically connected with the fixed terminal through the conductive ring when the audio plug is inserted into the insertion hole to push the elastic arm up to contact with the inner side of the conductive ring.

Abstract: A combination of connector assembly and two printed circuit boards includes a first printed circuit board defining a guiding gap at one edge thereof and a second printed circuit board, a receptacle connector including a receptacle insulating housing and a plurality of receptacle terminals, a plug connector including a plug insulating housing and a plurality of plug terminals. The receptacle insulating housing defines a plurality of assisting channels penetrating through a bottom surface of the receptacle insulating housing in order to communicate with the guiding gap of the first printed circuit board. Each of the receptacle terminals has a pair of contact portions face-to-face stretching into the corresponding assisting channel. Each of the plug terminals has a contact arm stretching out of the plug insulating housing so as to pass through the guiding gap to be electrically clamped by the contact portions of the corresponding receptacle terminals.

Abstract: A circuit board connector assembly includes two receptacle connectors each including a receptacle insulating housing and a plurality of receptacle terminals disposed in the receptacle insulating housing, and a plug connector disposed on the top of two adjacent receptacle connectors. Each of the receptacle terminals has a base board. Two opposite side edges of the base board extend towards a same direction to form a pair of clamping portions. The plug connector includes a plug insulating housing and a plurality of plug terminals integrated in the plug insulating housing. Each of the plug terminals has a connecting board molded in the plug insulating housing. Two opposite ends of the connecting board extend towards a same direction to form a pair of contact arms extending beyond a mating surface of the plug insulating housing to be electrically clamped by the corresponding two pairs of clamping portions of the two receptacle connectors.

Abstract: A flexible printed circuit board connector adapted for receiving a flexible printed circuit board has an insulating housing including two blocking walls, each defines a lateral side having a buckling cavity at a front thereof and a first and second locating cavities at a rear thereof. The buckling cavity includes a first buckling cavity and a second buckling cavity extending frontward from the first buckling cavity. The second locating cavity is located in front of and spaced from the first locating cavity. A cover defines two lateral plates respectively secured to the lateral sides, each has a locating portion and a buckling portion respectively protruded inwards from an inner side thereof. The locating portion is capable of being pivotally mounted in the first locating cavity, and then the locating portion and the buckling portion can be moved frontward to the second locating cavity and the second buckling cavity, respectively.

Abstract: A circuit board connector assembly adapted for connecting two printed circuit boards includes a receptacle connector having a receptacle insulating housing and two plug connectors each connected with the corresponding printed circuit boards and having a plug insulating housing. Two opposite ends of the plug insulating housing respectively define a holding cavity passing through a side surface thereof. The holding cavity is connected with the side surface by a slope. Two opposite ends of the receptacle insulating housing extend downward to respectively form two connecting arms spaced from each other. A free end of each of the connecting arms is bent inward to form a buckling portion. The printed circuit boards are electrically connected with each other by means of the plug connectors inserted into the receptacle connector. The buckling portions can be buckled into and slide out from the corresponding holding cavities along the corresponding slopes.

Abstract: A board-to-board connector assembly includes a receptacle connector and a plug connector. The receptacle connector includes a receptacle housing, a plurality of first terminals and at least one fixing member disposed in the receptacle housing respectively. Each of the first terminals has a crooked first resilient portion and a soldering portion protruded from a free end of the first resilient portion to further project under the receptacle housing. The fixing member has a pair of crooked second resilient portions and two soldering tails each protruded from a free end of the respective second resilient portion to further project under the receptacle housing. The plug connector includes a plug housing mated with the receptacle housing, and a plurality of second terminals disposed in the plug housing and electrically contacting the corresponding first terminals.

Abstract: A connector terminal mounted in a flexible printed circuit board connector for electrically connecting with the flexible printed circuit board includes a fixing portion of strip shape, a soldering portion connecting with one end of the fixing portion and a contacting portion extending upwards from the other end of the fixing portion to show an arc shape. The contacting portion has a retaining portion protruding from a peak thereof. The retaining portion includes a smooth contacting surface for contacting the flexible printed circuit board and an end surface defined at one end thereof. The contacting surface and the end surface define a sharp junction therebetween. A peak of the sharp junction is capable of interfering with the flexible printed circuit board.

Abstract: A flexible printed circuit board connector adapted for receiving a flexible printed circuit board has an insulating housing including two blocking walls, each defines a lateral side having a buckling cavity at a front thereof and a first and second locating cavities at a rear thereof. The buckling cavity includes a first buckling cavity and a second buckling cavity extending frontward from the first buckling cavity. The second locating cavity is located in front of and spaced from the first locating cavity. A cover defines two lateral plates respectively secured to the lateral sides, each has a locating portion and a buckling portion respectively protruded inwards from an inner side thereof. The locating portion is capable of being pivotally mounted in the first locating cavity, and then the locating portion and the buckling portion can be moved frontward to the second locating cavity and the second buckling cavity, respectively.

Abstract: A portable camera having a lens assembly switching mechanism is provided. The portable camera includes a camera main body, a camera module, a slab module and a coupling structure. The camera main body has a camera opening formed in a first surface thereof. The camera module is disposed within the camera main body and includes a lens assembly exposed through the camera opening. The slab module is used for carrying one or more selective lens assemblies with different shooting angles. The coupling structure is disposed between the first surface of camera main body and the camera module. The slab module is movable with respect to the coupling structure while the slab module is parallel with the first surface of the camera main body, so that one of the selective lens assemblies is aligned with the camera opening for providing an adjustable shooting angle.

Abstract: A portable camera device includes a first casing, a second casing and an extendable mechanism. The second casing contains a lens module and has a lower part connected to a first connecting position of the first casing such that the lens module is arranged above the first casing. The extendable mechanism has a rear end with a document holding structure for holding a document and a front end connected to a second connecting position of the first casing via a first pivotal mechanism. The extendable mechanism is selectively folded or unfolded with respect to the first casing when the extendable mechanism is rotated in various directions by adjusting the first pivotal mechanism. A relative spatial correlation between the lens module and the document is adjusted such that the lens module is focused on a selected area of the document for capturing an image of the document.

Abstract: A focus-quality judging method includes the following steps. Firstly, a comparing object including a target area is provided. A reference image pickup device is provided to shoot the comparing object to obtain a standard image including a standard target area image. Then, a first pixel number contained in the standard target area image is counted. The comparing object is shot by a test image pickup device to obtain a test image including a test target area image, wherein the test image has the same resolution as the standard image. Then, a second pixel number contained in the test target area image is counted. The first pixel number contained in the standard target area image is compared with the second pixel number contained in the test target area image. According to the comparing results, it is discriminated whether the test image pickup device performs an accurate focusing operation.

Abstract: A differential temperature sensor system and method of determining a temperature shift of an optical resonator and its surroundings are provided. The differential temperature sensor system includes a light generating device capable of generating a beam having a carrier frequency, a modulator capable of modulating the beam with a sideband frequency, and an optical resonator capable of supporting an ordinary mode and an extraordinary mode. The system includes an ordinary mode-lock setup capable of locking the carrier frequency of the beam to the ordinary mode of the optical resonator and an extraordinary mode-lock setup capable of locking the sideband frequency of the beam to the extraordinary mode of the optical resonator by providing a specific radio frequency to the modulator substantially corresponding to a frequency shift between the ordinary mode and the extraordinary mode of the optical resonator resulting from a temperature change of the optical resonator.

Abstract: A portable document holder for use with an electronic device includes a supporting body, a first retractable mechanism, a holder body and a second retractable mechanism. The first retractable mechanism is connected to the supporting body and movable forwardly or backwardly in a first horizontal direction. The holder body has a bottom pivotally coupled to the supporting body such that the holder body is rotatable in either a clockwise or anti-clockwise direction and a shooting angle is defined between the holder body and a lens module of the electronic device. The second retractable mechanism includes an extension arm coupled to an upper edge of the holder body and two extension arms disposed at bilateral sides of the holder body. A holding space of the holder body is expanded in a vertical direction and/or a second horizontal direction when the extension arms are extended.