摘要:
A component carrier, for holding for purposes of automated visual inspection an electrical component having a lead with a free end, includes a carrier substrate and a pocket recessed in the substrate for holding the component in the interior of the pocket. The pocket includes a wall, depending from the carrier substrate and defining a lateral boundary of the pocket, and a bottom. There is a lead-tip horizontal plane and a lead-tip vertical plane when a correctly constructed component of the type the carrier is intended to hold is properly oriented in the pocket. The lead-tip vertical plane is perpendicular to a longitudinal axis of the pocket. The wall slopes down and inwardly at a first angle relative to the substrate through the lead-tip horizontal plane and at a second angle relative to the substrate through the lead-tip vertical plane. The first angle is greater than or equal to approximately 75.degree. and less than or equal to 90.degree., and the second angle is less than 90.degree. and not greater than the first angle.
摘要:
A plastic cushion pad (40) includes at least one plastic spring portion (46) between oppositely facing contact surfaces (42, 44). In one example, the pad (40) is vacuum formed using a film of carbon-impregnated polystyrene material. The plastic spring portion (46) is configured to provide the desired amount of resiliency or cushion provided by the pad responsive to a compressive force. In one example, the plastic spring portion is designed to prevent any lateral deformation of the pad when a compressive force is applied.
摘要:
A component carrier for holding a component includes a carrier substrate and a pocket recessed in the substrate for holding the component in its interior. The pocket has a wall and a floor, and the wall includes a series of elongated arcuate channels. The channels are concave relative to the pocket interior and extend substantially perpendicular to the pocket floor. The wall is substantially flat between the channels. A substantially continuous pedestal projects from the pocket floor. The pedestal has (i) an upper surface for supporting the component, (ii) a pair of support walls extending from the pocket floor and terminating in the support surface, and (iii) a notched portion intermediate the pedestal and defined by a lateral support member extending between the support walls and spaced from the pocket floor, for absorbing lateral components of compressive forces applied to the pedestal.
摘要:
A component carrier for holding a component includes a carrier substrate and a pocket recessed in the substrate for holding the component in its interior. The pocket has a wall and a floor, and the wall includes a series of elongated arcuate channels. The channels are concave relative to the pocket interior and extend substantially perpendicular to the pocket floor. The wall is substantially flat between the channels. A substantially continuous pedestal projects from the pocket floor. The pedestal has (i) an upper surface for supporting the component, (ii) a pair of support walls extending from the pocket floor and terminating in the support surface, and (iii) a notched portion intermediate the pedestal and defined by a lateral support member extending between the support walls and spaced from the pocket floor, for absorbing lateral components of compressive forces applied to the pedestal.
摘要:
A platform (40) has a rigid body with an adjustable thickness (t) to selectively occupy any remaining space within a container (20) used for packaging items such as semiconductor wafers (22). The platform (40) in one example has a first portion (42) and a second portion (44). Adjusting the positions of the first and second portions (42, 44) relative to each other selectively varies the thickness (t) of the platform (40) to achieve the desired thickness.
摘要:
A container for packaging items such as semiconductor wafers has a restraining portion with a changeable dimension at an open end that facilitates using conventional loading techniques while also more securely containing the items to avoid undesirable movement of the items in the container. In one example embodiment, the restraining portion includes a sidewall portion that has a first, nominal inside dimension at one end. A second end of the sidewall portion has a second, greater inside dimension at an open end. Another member of the container cooperates with the sidewall portion to change the inside dimension at the open end from the second, greater dimension to the first, nominal dimension. The nominal dimension is selected to correspond to an exterior dimension of the items to be contained within the package so that the container maintains the items in a secure alignment that eliminates lateral movement of the items once the container is secured.
摘要:
A component carrier tray for holding electrical components includes a support frame and a pocket insert supported by the support frame. The frame has at least one opening or concavity therein. The pocket insert is located in the opening or concavity and is formed of a high temperature semi-crystalline polymer. Each pocket insert is adapted to receive and hold at least one electrical component.
摘要:
A fluidized bed is described and which includes a multiplicity of fluidizing manifolds positioned in spaced relation one relative to the others; an enclosure positioned in gravity receiving relation relative to the multiplicity of fluidizing manifolds and which has an intake and a discharge end, and wherein particulate matter received in the fluidized bed moves under the influence of gravity from the intake end to the discharge end, and a moveable gate is mounted on the second discharge end of the enclosure and which is operable to selectively occlude a discharge aperture and which further facilitates the selective removal of particulate matter and waste material entrained with same, and which moves under the influence of gravity to the discharge end thereof.
摘要:
A system for indexing unstructured or semi-structured data is disclosed. The system may identify regions within the data, such as “Abstract” or “References”. The system may identify linguistic units such as sentences, noun groups, verb groups. The system may also identify concepts such as companies, people, diseases, amounts, and so forth. The query results may be formatted so that similar results from different documents, or from the same document, are clustered together.
摘要:
Predetection noise bandwidth reduction is effected by a pre-averager capable of digitally averaging the samples of an input data signal over a single symbol, the averaging interval being defined by the input sampling rate divided by the output sampling rate. As the averaged sample is clocked to a suitable detector at a much slower rate than the input signal sampling rate the noise bandwidth at the input to the detector is reduced, the input to the detector having an improved signal to noise ratio as a result of the averaging process, and the rate at which such subsequent processing must operate is correspondingly reduced. The pre-averager may form a data filter when the output sampling rate is reduced to one sample per symbol of received data.