Abstract: Method for forming a variable circuit connector in a wafer having a plurality of circuit modules, is disclosed, which allows selective cut-off and connection between circuit modules, including the steps of forming an insulating layer on an entire surface of the wafer inclusive of a plurality of connecting layers connected to terminals on the circuit modules, and injecting conductive ions into the insulating layer between the connecting layers intended to connect to each other.

Abstract: An automatic video-tape cassette changing device adapted to be used in combination with a recording and reproducing apparatus comprises: a main body having a rectangular-shaped open space in which a number of cassettes is to be dropped, a cassette entering inlet located in the vicinity of and parallel to the access opening, and a cassette discharging outlet through which the cassette is discharged outwardly; a pair of cassette feeding mechanisms for dropping the cassettes one at a time; unit for inserting or extracting the dropped cassette into or from the access opening of the VCR; and unit for discharging the cassette extracted from the VCR through the cassette discharging outlet outwardly.

Abstract: Disclosed herein is an automate cassette changing device adapted to be used in combination with a recording and reproducing apparatus, which comprises a main body having a rectangular-shaped open space suitable for receiving one or more stacked cassettes, a cassette entering inlet provided at a rear wall of the body for supplying the cassette to the apparatus therethrough, and a cassette discharging outlet formed at a side wall of the body for discharging cassettes ejected from the apparatus, projecting pieces provided at a front wall of the body for supporting the stacked cassettes, a pair of cassette feeding mechanisms mounted on the side walls of the body in an opposite relationship with each other for dropping the cassettes in sequence on the bottom surface of the body, and a cassette pusher associated with one of the cassette feeding mechanisms for pushing the lowermost one of the stacked cassettes and separating it from the stacked cassettes.