摘要:
There is provided a coding/decoding system of bit insertion manipulation line code, which has small increase in bit rate and simple configuration and minimizes DC baseline fluctuations by properly coupling the advantages of mBnB code and bit insertion code in a high-speed optical transmission system using AC coupling. The encoding part of the system inserts a bit for minimizing a disparity of m+1 bit block when a disparity with respect to m-bit input information is a minimum value that the m+1 bit block may have, and inserts ‘0’ when it is not, performing pre-coding. Then, the encoding part manipulates a part of the bits of the pre-coded block to make its disparity have the minimum value, compares the disparity of the pre-coded block with a disparity accumulated, and inverts or non-inverts the block, thus carrying out coding. The decoding part removes the insertion bit from the coded information, inverts the block again when it is inverted during the encoding, and performs a manipulation opposite to the bit manipulation, thus executing decoding.
摘要:
A system and articulator for use with a replication of a dental patient's teeth taken by a conventional dental impression in the creation of a dental model of the patient's mouth. A first tray and a second tray are provided, each tray including a base surface having at least one frangible portion formed therewith, first and second spaced apart and upwardly extending side walls and first and second end walls which define a recessed cavity therebetween. The side walls are each defined by pluralities of spaced apart and vertically extending raised portions which permit segmented portions of the upper and lower dental models to be releasably attachable in correct position. A template base is provided with a configuration suitable for supporting an underside of each of said trays in an upright fashion and includes at least one raised portion corresponding in location and placement with the at least one frangible portion. A punch member is configured to engage first and second selected surfaces of each of the trays and downwardly actuates the trays so that the frangible portions are forcibly disengaged from the base surface and the base layer of stone and associated dental model are ejected from within the recessed cavity. The articulator includes a first mounting portion extending from the first tray and a second identically shaped mounting portion extending from the second tray. A first insert portion engages the first mounting portion and a second insert portion engages the second mounting portion. The first and second insert portions are each adjustable in height relative to their associated trays and further include aligning eyelet portions which permit them to be hingedly secured along a common axis so as to provide for desired positioning of the opposingly arrayed dental models.
摘要:
A fluid extruding device is provided. In one embodiment, the fluid extruding device has a cartridge receiving aperture configured to receive a fluid cartridge with first and second cylindrical chambers. The fluid extruding device further includes an activation mechanism, a motor having a shaft, wherein the motor is configured to selectively rotate the shaft either a clockwise or counterclockwise direction, and an elongated screw connected to the shaft of the motor. In one embodiment, a movable body engages the elongated screw, and is connected to a first piston and a second piston. The first piston has a first pushing plate configured to engage a back of the first cylindrical chamber of the fluid cartridge and the second piston has a second pushing plate configured to engage a back of the second cylindrical chamber of the fluid cartridge.
摘要:
A dental prostheses modeling system includes a molding tray for molding the base of a quadrant or full-arch dental model cast which has a longitudinally disposed partition panel disposed generally between upper and lower surfaces of the tray that forms therewithin an upper well for receiving liquid die stone to mold the base of a dental impression model, and a lower well shaped symmetrically to the upper well for providing clearance for optional manipulating pins installable in the bases of selected die segments modeling individual dental prostheses severed from the hardened die stone base of the model. The partition panel includes peripheral flanges for supporting the base of the dental model, and an openable central portion for enabling a hardened dental model to be ejected from the tray, and for providing access for manipulating pins depending downwardly from die segments. A pair of slide receptacles for slidably receiving a modeling tray is removably attachable to upper and lower arms of a laboratory articulator, from which a pair of molding trays holding a pair of dental models can be slidably removed and attached to a disposable hinge mechanism to comprise a articulateable full-mouth model for a dentist and patient.
摘要:
An improved tray system and articulator for use with a replication of a dental patient's teeth taken by a conventional dental impression in the creation of a dental model of the patient's mouth. A first tray and a second tray are provided, each tray including a base surface, first and second spaced apart and upwardly extending side walls and first and second end walls. The side walls are each defined by pluralities of spaced apart and vertically extending raised portions which permit segmented portions of the upper and lower dental models to be releasably attachable in correct position. The articulator includes a first mounting portion extending from the first tray and a second identically shaped mounting portion extending from the second tray. A first insert portion engages the first mounting portion and a second insert portion engages the second mounting portion. The first and second insert portions are each adjustable in height relative to their associated trays and further include aligning eyelet portions which permit them to be hingedly secured along a common axis so as to provide for desired positioning of the opposingly arrayed dental models.