Abstract:
A method and apparatus for storing and transferring information employing a conductor-insulator-semiconductor (CIS) structure as the storage and transfer apparatus is disclosed herein. The CIS structure is initially charged to a predetermined voltage thereby forming a depletion region within the semiconductor beneath the insulated conductor. Minority carriers controllably generated within the semiconductor are stored at the surface of the semiconductor beneath the insulated conductor by an electric field existing in the depletion region, thus changing the predetermined voltage. Means for transferring the stored charge along the surface of the semiconductor are disclosed.
Abstract:
Surface charge transistor devices including at least two adjacently spaced conductor electrodes insulatingly overlying a semiconductor substrate with a third conductor electrode insulatingly interposed between the adjacently spaced conductor electrodes are disclosed. Electrical charges stored within one storage region underlying one conductor electrode are controllably transferred to another storage region underlying the other conductor electrode with charge and voltage gain by dimensioning the conductor members such that the capacitances of the storage regions are unequal. A plurality of adjacently spaced conductor members with interposed conductor electrodes can be arranged to perform numerous logic and memory functions, both analog and digital. Means for introducing and removing electrical charges are also disclosed.
Abstract:
An array of radiation sensing devices each including a pair of closely coupled conductor- insulator-semiconductor cells, one a row line connected cell and the other a column line connected cell, is provided on a common semiconductor substrate connected to ground. Read out of a device is accomplished by reducing the voltage on the row line of the device to cause stored charge to flow to the column connected cell of the device and thereafter reducing the voltage on the column line of the device to inject the charge stored therein into the substrate. Circuit means is provided in series relationship with the addressed column line to integrate the current flow in the column line due to the injected charge. In another embodiment the column conductor lines are arranged in a plurality of consecutively numbered sets, each set including the same number of consecutively numbered column lines. A plurality of charge integrating means are provided each connected between a respective column line of a set and ground for simultaneous read out of charges through the column lines of a set. Switch means are provided for connecting each set of column lines in turn for read out. A plurality of video signals equal in number to the number of sets are obtained. The video signals may be multiplexed to obtain a composite video signal.
Abstract:
The corner of a magnetic recording head at one edge of the gap therein is modified by being set back, rounded off, etc., to produce a slowly varying response when a magnetic flux reversal in a magnetic recording medium moving in relation to the head passes the modified corner. A fast response is thus produced only when a flux reversal passes the corner at the other gap edge, obviating nulls in frequency response and yielding the benefits of a large gap without sacrificing resolution. Linear processing of waveforms produced by the head provides a sharp output pulse in response to each passing flux reversal.