摘要:
An apparatus for recording and reproducing digital/analog video signals including a single head drum attached with heads for processing analog video signals and heads for processing digital video signals, and switches performing switching operations on the basis of the kind of input video signals. The head drum is variable in speed, depending on the kind of input video signals. In accordance with the apparatus, both analog and digital signals can be recorded and reproduced by a single recording unit and a single reproducing unit both capable of varying in characteristic, based on a video signal received thereto. This provides a reduction in manufacture cost and a light, thin, simple and compact construction of the existing VCRs.
摘要:
Present invention relates to the fabrication method of the bipolar transistor.With this method the emitter of high-concentrated n-type is contacted closely to the extrinsic base of high-concentrated p-type.This structure is obtained by making the emitter of the bipolar transistor be self- aligned by the side wall under-cut of the nitride layer using double layers of the low temperature oxide and the nitride layer.