Abstract: A battery cover assembly includes a battery cover (3) defining a pair of guide rails (326) therein, a connecting member (2), a housing (1) defining a receiving slot (164) and a battery-receiving compartment (194), a plurality of springs (5, 7), a plurality of sheaths (6), and an antenna rod (4). The connecting member is engaged with the sheaths and is loosely received in the guide rails along a lateral direction. The antenna rod inserts into the receiving slot through the connecting member, the sheaths, and the springs such that the battery cover can rotate about the antenna rod. When the battery cover is rotated downwardly to the housing, a force is required to press the battery cover down upon the housing, and then inwardly along a direction toward the antenna rod until locking projections (302) on the cover catch in troughs (182) defined in the housing.

Abstract: A hinge assembly (10) includes a shaft (20), a follower (22), a cam (30), a washer (50), a lubrication mass forming means, and an urging means. The shaft has a securing portion (21) formed at one end thereof. The follower connects with the shaft. The cam essentially is in the shape of a cylinder, and includes a cam surface (32) and defines a cam hole (31) extending therethrough. The cam hole receives the shaft therethrough. The washer defines a center hole (52), and is located around the shaft. The lubrication mass forming means is disposed between the washer and the cam. One end of the urging means abuts the shaft, and an opposite end of the urging means biases the washer. The cam surface of the cam is rotatably and movably engaged with the follower under force of the urging means.

Abstract: A hinge assembly includes a shaft (10), a follower (12), a cam (20), at least one rolling member (40), and a spring (50). The follower is connected with the shaft. One of the shaft and the follower has a securing portion (11). The cam is essentially in the shape of a cylinder. The cam has a cam surface (24) and has a cam hole (22) extending therethrough. The cam hole receives the shaft there through. Each rolling member is disposed between the follower and the cam. The first end of the urging means abuts the shaft, while an opposite second end of the urging means biases the cam. The cam surface of the cam is rotatably and movably engaged with each rolling member under the force of the spring.

Abstract: A hinge mechanism includes a shaft (1), at least one cam follower (12), a cam (2), a washer (3) and an elastic member (4). Each cam follower has a projection (120) connected to the shaft. The cam has a cam surface (24) defined thereon. The shaft runs through the cam, the washer and the elastic member, in turn. The cam surface of the cam faces the projection of each cam follower, and the cam abuts the cam follower, due to the spring force generated by the elastic member. The washer and the cam are magnetic, the facing portions thereof having the same polarity. As a result of the repulsive magnetic force between the cam and washer, the hinge mechanism generates a smaller friction therebetween, so the waste of energy is very small. The present hinge mechanism can be used in foldable electronic devices.

Abstract: A hinge assembly (10) includes a shaft (20), a follower (22), a cam (30), at least one oil storing receptacle (33), and an urging means (40). The shaft has a securing portion (21) formed at a first end thereof. The follower connects with the shaft. The cam is essentially in the shape of a cylinder, and includes a cam surface (32) and defines a cam hole (31) extending therethrough. The cam hole receives the shaft therethrough. In one embodiment, a first end of the urging means abuts an opposite second end of the shaft, and an opposite second end of the urging means biases the cam. Three oil storing receptacles are disposed generally between the cam and the urging means. The cam surface of the cam is rotatably and movably engaged with the follower under force of the urging means.

Abstract: A decision mechanism for partition types of a macro block is provided. First, a rough motion estimation is performed on a macro block, so as to obtain a rough related information corresponding to various partition types. Then, one of the partition types is determined based on the rough related information. Afterwards, a fine related information is obtained by performing a fine motion estimation with the determined partition type on the macro block. Wherein, the increased pixel shift of the fine motion estimation is smaller than the increased pixel shift of the rough motion estimation. Accordingly, the decision mechanism for partition types of the macro block can reduce the motion estimation time and provide higher processing efficiency.

Abstract: A video coding/decoding buffering apparatus and a buffering method thereof are provided. The method codes/decodes a current macro block to generate a corresponding unfiltered current macro block data, and a right data area and a bottom data area of the unfiltered current macro block data are stored. The unfiltered current macro block data is filtered to generate a filtered current macro block data, and a right data area and a bottom data area of the filtered current macro block data are stored. The stored data areas are used to code/decode the associated macro blocks.

Abstract: A method for setting the threshold of a fast motion estimation algorithm, which improves the accuracy precision of motion vectors at the edges of objects and the algorithm efficiency in the background area when used together with threshold-based fast motion estimation algorithms. The steps of the method includes determining whether a macroblock is located at the edge of a moving object; setting the threshold of the fast motion estimation algorithm to a smaller edge threshold when the macroblock is at an edge; and setting the threshold of the fast motion estimation algorithm to a larger background threshold when the macroblock is not at an edge.

Abstract: A battery cover assembly includes a battery cover (3) defining a pair of guide rails (326) in an inner surface of the battery cover, a connecting member (2), a housing (1) defining a receiving slot (164) and a battery-receiving compartment (194), a plurality of springs (5, 7), a plurality of sleeves (6), a number of locking pins (7), and an antenna rod (4). The connecting member is loosely received in the guide rails along a lateral direction. Each sleeve includes a first through hole and a second through hole. The connecting member is engaged with each sleeve by using each locking pin inserting into a folded arm of the connecting member and the first through hole, and the antenna rod inserts through the through hole of the sleeve and the receiving slot, such that the battery cover is pivotably connected with the housing.

Abstract: An enclosure of a mobile phone with changeable panel includes a front cover (1), a panel (2), a rotatable holder (3), and a spring (4). The front cover defines a through hole (16) and latch slots (171, 172). The panel has projections (241, 242) at an edge thereof, and the projections can be engaged in the latch slots of the front cover. The panel further has a hole (25) corresponding to the through hole of the front cover. The holder has a latch portion (33), and the spring is engaged around the holder. The holder with the spring is received in the hole of the panel, and the holder is further received in the through hole of the front cover. The holder is rotated and the spring is compressed, thereby securely holding the panel on the front cover.

Abstract: A battery cover assembly includes a battery cover (3) defining a pair of guide rails (326) therein, a connecting member (2), a housing (1) defining a receiving slot (164) and a battery-receiving compartment (194), a plurality of springs (5, 7), a plurality of sheaths (6), and an antenna rod (4). The connecting member is engaged with the sheaths and is loosely received in the guide rails along a lateral direction. The antenna rod inserts into the receiving slot through the connecting member, the sheaths, and the springs such that the battery cover can rotate about the antenna rod. When the battery cover is rotated downwardly to the housing, a force is required to press the battery cover down upon the housing, and then inwardly along a direction toward the antenna rod until locking projections (302) on the cover catch in troughs (182) defined in the housing.

Abstract: A battery cover assembly includes a battery cover (3) defining a pair of guide rails (326) in an inner surface of the battery cover, a connecting member (2), a housing (1) defining a receiving slot (164) and a battery-receiving compartment (194), a plurality of springs (5, 7), a plurality of sleeves (6), a number of locking pins (7), and an antenna rod (4). The connecting member is loosely received in the guide rails along a lateral direction. Each sleeve includes a first through hole and a second through hole. The connecting member is engaged with each sleeve by using each locking pin inserting into a folded arm of the connecting member and the first through hole, and the antenna rod inserts through the through hole of the sleeve and the receiving slot, such that the battery cover is pivotably connected with the housing.

Abstract: A connecting structure for a battery case and a main body of a portable electronic device comprises a base (1), a connecting member (2), a cover (3), a shaft (4), a spring module (5) and a cylinder (6). The base has a receiving part (163) and a recessed portion (194). A hinge (22) is formed on one end of the connecting member. The cover has a track (322) and the connecting member can slide along the track. The connecting member is connected to the cylinder, and the shaft extends through the cylinder and is received in the receiving part of the base.

Abstract: A battery cover assembly includes a battery cover (3) defining guiding slots (326) therein, a connecting member (2), a housing (1) defining a battery-receiving compartment (194), a plurality of springs (5), and a rod (4). The housing includes a left sidewall (16), a partion wall (19), a first step (161) and a second step (163) connecting against the left sidewall, defining a receiving recess (167). The connecting member is slidingly received in the guiding slots along a lateral direction. The rod inserts through the connecting member, the springs, and secured in the receiving recess such that the battery cover can rotate about the rod. When the battery cover is rotated downwardly to the housing, a force is required to press the battery cover down upon the housing, and then inwardly along a direction toward the rod until locking projections (302) on the cover catch in troughs (182) defined in the housing.

Abstract: A battery cover assembly includes a battery cover (3) defining a pair of guide rails (326) therein, a connecting member (2), a housing (1) defining a receiving slot (164) and at least a battery-receiving compartment (194), a plurality of springs (5), and an antenna rod (4). The connecting member is slidingly received in the guide rails along a lateral direction, and the antenna rod inserts into the receiving slot through the connecting member and the springs such that the battery cover can rotate about the antenna rod. When the battery cover is rotated downwardly to the housing, a force is required to press the battery cover down upon the housing, and then inwardly along a direction toward the antenna rod until locking projections (302) on the cover catch in troughs (182) defined in the housing.

Abstract: An electrical connector which includes a seat integrally made of plastic and formed with a plurality of through holes, a plurality of metal terminals each fitted in a respective one of the through holes of the seat and provided with a tail, and a base board used as a conductive medium between an electrical connector and a printed circuit board to provide a closed circuit, wherein the base board has an upper surface in contact with the electrical connector, a lower surface in contact with the printed circuit board, and a plurality of conductive members arranged between the upper and lower surfaces, whereby the possibility of unstable connection between the terminal and the solder ball can be eliminated.

Abstract: A Bluetooth network topology. The Bluetooth network system includes a plurality of piconets, containing a plurality of Bluetooth units, including one master unit and a plurality of slave units. These piconets are linked by the bridge units to form a scatternet ring. The scatternet ring is formed by a centralized forming mechanism, operated by a simple yet efficient routing protocol and maintained by recovery and extension mechanisms.

Abstract: A universal serial bus connector includes a main body and at least one indicator. The main body is formed from an insulator material, and has a plug inserting side and a board mounting side. The plug inserting side is formed with at least one plug slot that has a set of conductive contact terminals mounted therein. The contact terminals have solder tails that extend through the board mounting side. The indicator is mounted on the main body, and has power terminals separate from the contact terminals. When the contact terminals and the power terminals are mounted on a circuit board, the indicator can be controlled via the power terminals to indicate the status of signal transmission through the contact terminals.

Abstract: A cable assembly has a flat cable, and a plurality of connectors connected to the flat cable. Each connector includes a plurality of signal terminals, at least one grounding piece and an insulating body. A specific grounding device is formed on a specific position of the grounding piece. The spacing wall of the grounding piece slot and the signal terminal slot of the insulating body with respect to the base of the grounding piece is hollowed so that when the grounding piece is inserted into the grounding piece slot, the specific grounding device passes through the hollow portion to directly contact at least one specific signal terminal in the adjacent signal terminal slot. The signal transferred by the at least one specific signal terminal will ground without passing through the specific conductive wire of the bank wire.

Abstract: An electric connector has a long insulating housing with a plurality of conducting terminals arranged within the housing. Installing seats are formed on two distal ends of the housing for mounting latch structures. Each latch structure includes a twistable head with a twistable device provided on the transverse opposite side surfaces of the twistable head, by which the user may horizontally pull the latch structure outwards in the longitudinal direction to rotate the latch from a locking position to a releasing position.