Abstract: A device and its operating method for mobile communication, the mobile communication device includes a micro processor, a memory which has an instruction database and an image database, a touch panel, a message module and a communication module. After a user inputs a symbol, the micro processor will retrieve and execute an operating instruction which corresponds to the symbol from the image database and the instruction database, or look for the contact and perform the communication action which corresponds to the symbol. When the operating instruction or the communication action which corresponds to the symbol fails, the micro processor will enter a setting interface to set up an operating instruction or communication action which corresponds to the symbol.

Abstract: An electronic device is provided to allow users to input a biological characteristic and self-define an execution command corresponding to the biological characteristic. The electronic device includes a key unit, a biological characteristic input unit, a storage unit and a processing unit. A biological characteristic can be inputted to the biological characteristic unit. At least a set of the biological characteristic data can be built by activating a biological characteristic configuration program via the processing unit to execute command to the storage unit.

Abstract: A combinational mobile communication device includes a communication device main-body and at least a swappable function expansion component. The design and structure of the swappable function expansion component is modularized, thus making it suitable to combine with a communication device main-body into an integral mobile communication device. The swappable function expansion component includes a function expansion module, and a shell. This shell can be combined with a communication device main-body to form a part of the outer shell of a mobile communication device, such as a front outer shell, a back outer shell, or a side outer shell.

Abstract: A portable electronic device with replaceable casing, panel and/or press key includes a body which is the main component of the electronic device, and a casing installed at the exterior of the body. The casing includes components such as a panel and a press key, wherein a plurality of insert structures are installed between the body and the casing, the panel or the press key, and each insert structure includes an insert pin and an insert hole corresponding to the insert pin, and the insert pin is detachably inserted into the corresponding insert hole, so that a user can freely configure the portable electronic device with different casings, panels and/or press keys based on personal preference.

Abstract: A device and its operating method for mobile communication, the mobile communication device includes a micro processor, a memory which has an instruction database and an image database, a touch panel, a message module and a communication module. After a user inputs a symbol, the micro processor will retrieve and execute an operating instruction which corresponds to the symbol from the image database and the instruction database, or look for the contact and perform the communication action which corresponds to the symbol. When the operating instruction or the communication action which corresponds to the symbol fails, the micro processor will enter a setting interface to set up an operating instruction or communication action which corresponds to the symbol.

Abstract: Disclosed is a screw nail, which has chip grooves respectively obliquely cut through top and bottom sides of each of the threads thereof at different elevations and defining with each thread two parallel cutting edges, and a plurality of guide ribs protruded from the periphery of the nail shank and respectively connected between each two vertically spaced adjacent chip grooves for guiding out cut chips and enhancing binding between the screw nail and the workpiece.

Abstract: A wood screw includes a head and a shank which includes a screw-in portion including a tapered section and a tip point at a distal end of the tapered section. A groove is defined longitudinally in the shank and starts from the tapered section and extends toward the head. A plurality of threads are formed on an outer periphery of the shank including the screw-in portion. A plurality of cutting teeth are formed on the threads on the screw-in portion. A plurality of ribs extend spirally from an outer periphery of the shank and located between the threads.

Abstract: A screw includes a head and a shank which includes a tip end. Spiral threads are defined in an outer periphery of the shank which includes a first section including the tip end and a second section including the head. A plurality of cutting ridges extend from the outer periphery of the first section of the shank so as to cut the fibers of the object and remove the debris of the object upward. The second section includes a plurality of grooves defined in the shank so as to receive the debris to prevent the debris from breaking the object.

Abstract: An interaction method between two communication terminals suitable for a portable communication device is provided. A wireless transmission protocol is used to link a first communication terminal to a second communication terminal. Next, a plane and a position on which a portable communication device of the first communication terminal is located is detected to generate a 3-D data. The 3-D data is then converted into a data format conforming to the wireless transmission protocol to transmit the 3-D data from the first communication terminal to the second communication terminal. Thus, the first communication terminal can control the operations of the portable communication device in the second communication terminal.

Abstract: A screw includes a rod-shaped portion, and a spiral-shaped thread winding around the rod-shaped portion. The rod-shaped portion has a straight portion, and a front end portion tapering towards a pointed front end. Several cutting trenches are formed on the rod-shaped portion for cutting bits off a workpiece with which when the screw is being screwed into the same. The tapering front end portion is provided with a notch, and cutting teeth are provided on that portion of the thread corresponding to the tapering front end portion. Cut-off bits of a workpiece can be received in the trenches as well as the cutting teeth so that the same can't have excessive resistance against the screw.

Abstract: A screw includes a rod-shaped portion, and a spiral-shaped thread winding around the rod-shaped portion. The rod-shaped portion has a straight portion, and a front end portion tapering towards a pointed front end. Several cutting trenches are formed on the rod-shaped portion for cutting bits off a workpiece with which when the screw is being screwed into the same. The tapering front end portion is provided with a notch, and cutting teeth are provided on that portion of the thread corresponding to the tapering front end portion. Cut-off bits of a workpiece can be received in the trenches as well as the cutting teeth so that the same can't have excessive resistance against the screw.

Abstract: A screw includes a straight portion and a cutting screw-in portion tapered toward a pointed end. A cutting thread is provided on the tapered screw-in portion. The cutting thread has several cutting teeth spaced apart thereon, and connects threads of the straight portion. Each of the cutting teeth has a sawtooth like shape and is sloping at an angle. The cutting teeth can cut the wood into relatively small bits on the contact with it when the screw is being screwed into the wood, and drive part of the bits out of the hole of the wood to prevent the wood from being cracked. The cutting teeth can help the screw to be screwed into the wood with relatively great speed and small resistance.