A reconfigurable digital register that can be serially loaded has an additional bit associated with the register which holds information indicative of a mode of operation of the register. The mode control bit is located such that it can be serially loaded along with the other bits. A particularly useful embodiment is to use the mode control bit to configure the register as either a test pattern generator or a signature analysis register in support of integrated circuit self-test functions.

In a cache memory system, continuation registers are provided to abbreviated address data identifying the line position in the cache memory from which data is fetched. When data is fetched from a line in said cache memory, the bin number and line position identification of the line in the cache memory are saved in a continuation register. Then, subsequently, when data is fetched from the same line, it is fetched by a continuation request wherein the data saved in the continuation register is use...

A memory 200 comprises a first memory bank 201a including an array of memory cells 202a and row and column address circuitry 203a, 205a for addressing a location within the array 202a. The memory further includes a second memory bank 201b including an array of memory cells 202b and row and column address circuitry 203b, 205b for addressing locations within the array 202b. Row and address column circuitry 203, 206, 207 is included for selectively pipelining a plurality of serially received words ...

This invention relates to apparatus and methods for providing a high-density memory for electrical data and more particularly, to such a memory wherein data are represented by patterns of charge written and read by electron beam means at addressed locations.

An air ventilation conduit and related process are provided for ventilating an enclosure accessed by a manhole. In one embodiment, the conduit has a pair of outer cylindrical sections and a central section having a cross-sectional shape of a crescent or a segment of a circle where it passes through the manhole to provide a minimum of obstruction for men and equipment passing through the manhole. Intermediate sections of varying cross-section connect the central section to the cylindrical outer s...

There is disclosed a data accumulator suitable for use in oil field supervisory control systems or, more generally, in various process control or other data processing systems wherein it is desired to accumulate total at the remote location at any time without destroying or interfering with the accumulating total regardless of when the readout command is received. In order to accomplish this, there is provided a shift register adapted to contain the total count data in the form of a binary word ...

A storage solution includes a first enclosure having modules and non-volatile memory, such as hard disk drives. These modules convert file I/O to block I/O. A second enclosure includes second modules and non-volatile memory. These modules are operable to cause the block I/O to be stored on the non-volatile storage in either the first or second enclosure. Thus, the modules that perform block I/O storage can access storage that resides in the file I/O server. In a different arrangement, the storag...

Overlay patterns of discrete circuit elements for field-accessed, magnetic bubble propagation are driven by repetitive sequences of pulsed magnetic fields directed along axes which are parallel to consecutive overlay elements or segments with different orientations. A chevron circuit is driven by a series of reversing pairs of pulsed fields aligned alternately with the legs of the chevron elements. Two opposite parallel chevron circuits are driven in the same direction by the same sequence of pu...

A semiconductor memory is comprised of four arrays (10), (12), (14) and (16) that have the memory elements therein arranged in accordance with pixel positions on a display. The memory arrays have associated shift registers (34), (36), (38) and (40) which have data loaded in parallel and output in a serial format to the display. Each of the shift registers can be connected in a circulating fashion or a shift register of adjacent arrays can be cascaded. Switches (56), (58), (60) and (62) are provi...

Disclosed is a container system that is adapted to be accessed by horse mounted users. The container system finds particular application in storing equestrian implements, such as riding crops. The container is mounted at an elevated height upon a fence and additionally includes rounded forward faces. Thus, the container is easy to access by riders and presents less of a danger to the horse and its rider. Furthermore, the container is advantageously formed from a weather resistant plastic materia...