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Hood-shaped support frame for a low cost virtual reality system
Apparatus is disclosed for viewing computer generated images and for tracking the positions of the user's head and hand. One alternative of the apparatus...
Magnetic component assembly
A magnetic component assembly includes a circuit board having at least one layer. A first winding is provided on at least one surface of a layer of the circuit...
Portable drive system for artificial heart
A portable drive system for an artificial heart can be provided that includes a blood pump 1 having a blood seal for sealing a rotation shaft 13, a system drive...
Computer subsystem enclosure
Method and apparatus for managing power consumption in data processing
A method and apparatus for performing power management in a Java operating system environment is disclosed in which a state change request having a value and a...
Cache with reduced tag information storage
A cache memory system including a cache memory having a plurality of cache lines. An index portion of a tag array includes an n-bit pointer entry for every cache...
Apparatus and method for comparing digital words using a last bit
A circuit for comparing two digital words has a set of bit compare circuits that generate a set of compare signals. Each bit compare circuit receives a first bit...
Single phase edge-triggered dual-rail dynamic flip-flop
A single phase edge-triggered dual-rail dynamic flip-flop circuit for use with dynamic logic gates includes an input stage, precharge stage and buffer. The input...
Split gate oxide asymmetric MOS devices
A method for making an asymmetric MOS device having a notched gate oxide is disclosed herein. Such MOS devices have a region of a gate oxide adjacent to either...
Pilot operated pressure valve
A pilot operated pressure valve which limits the rate of pressure rise and substantially eliminates excessive system pressure spikes, the valve including an...
Method and apparatus for client-host communication over a computer
A method and apparatus are provided for dynamically configuring authorized clients with the address of a protected host and the key and address of an ...
Flexible mounting and unmounting of user removable media
A computer implemented method and apparatus for mounting a user removable media in a computer system includes acquiring a media identifier input and a function...
Design of tags for lookup of non-volatile registers
Stack tracebacks are performed in debugging and exception handling routines, and involve providing the values of non-volatile registers at the time of entry into...
Speculative cache line write backs to avoid hotspots
A cache system including a data cache memory comprising a plurality of cache lines. A tag store has an entry representing each line in the cache memory where...
System having multiple arbitrating levels for arbitrating access to a
shared memory by network ports operating...
A method and apparatus for managing a buffer memory in a packet switch that is shared between multiple ports in a network system. The apparatus comprises a...
Protocol for exchanging configuration data in a computer network
Methods and apparatus are disclosed for providing a data framework and associated client/server protocol for storing and exchanging data among computers in a...
Multi-threaded journaling in a configuration database
A method and system for creating and maintaining a journal of transactions directed to a configuration database is disclosed. A multi-threaded journaling method...
Management of entries in a network element forwarding memory
The invention generally provides for a network element and methods in the network element for allowing a matching entry in a forwarding memory to be found in a...
Method and apparatus for seamless connectivity of wide-band networks and
An apparatus for seamless connectivity between a narrow-band network like the Internet and an interactive TV wide-band network and methods of operating the same...
Aircraft ground collision avoidance system and method
A system and method for avoiding collision between objects and wingtips of an aircraft when the aircraft is on the ground includes mounting detecting devices...
Synchronization mechanism for distributed hardware simulation
The synchronization state of each of a number of concurrently executing tests which interacts with a particular circuit simulation of one or more circuit...
Cooling apparatus having integrated sorber-evaporator structure
An apparatus for cooling an electrical component is disclosed which comprises a sorber containing a sorbent; a condenser in fluid communication with the sorber;...
Digital data process system including efficient arrangement to support
branching within trap shadows
A digital computer includes an efficient mechanism by which an exception handler can traverse the instruction stream in a reverse direction to identify the...
Bi-level branch target prediction scheme with mux select prediction
One embodiment of the present invention provides a system for predicting an address of an instruction following a branch instruction in a computer instruction...
Efficient hash table for use in multi-threaded environments
A lockless-lookup hash table for use in a multi-threaded processing system has a memory whose storage locations hold elements. Each memory location is uniquely...
Method and apparatus for locating nodes in a carded heap using a card
marking structure and a node advance value
Apparatus, methods, systems, and computer program products are disclosed that locate a modified pointer value in a carded heap memory. A plurality of nodes is...
Electro-optically connected multiprocessor and multiring configuration
for dynamically allocating time
A computer system employs a hierarchical ring structure for communication. Computer system elements are configured into modules with ring interface hardware, and...
System and method for server selection for mirrored sites
The present invention is a system and method for providing server selection for mirrored sites. In one embodiment, a user requests an address via a local name...
Transaction management in a configuration database
A method and system are disclosed for updating and managing a configuration database used to store configuration and user data in a computer network having...
Multi-layer distributed network element
A distributed multi-layer network element delivering Layer 2 (data link layer) wire-speed performance within and across subnetworks, allowing queuing decisions...
Method and apparatus for implementing efficient floating point
A method for handling Z-values in accordance with the present invention. The Z-values correspond to vertices of a given primitive being processed within a...
Apparatus for atomic locking-accessing-unlocking of a shared resource
An atomic instruction is executed without the use of a dedicated atomic unit. A store instruction is transmitted from a front-end of one of a plurality of...
System and method for dynamic program linking
In a system for dynamically linking a compiled procedure to referenced object components during execution of the compiled procedure, a native code loader loads...
Measurement of signal propagation delay using arbiters
Arbiter circuits placed between two signal path segments on a semiconductor chip to measure the difference in propagation delay between those paths at their...
Method for forming a notched gate oxide asymmetric MOS device
A method for making an asymmetric MOS device having a notched gate oxide wherein a region of the gate oxide adjacent to either the source or drain is thinner...
Repeater blocks adjacent clusters of circuits
The present invention organizes the circuits on a VLSI chip into clusters. A number of channels exist in-between the clusters. Blocks of repeaters are used in a...
A dropping container includes a cylindrical body, a dropping portion having a pressure valve for closing an opening in the dropping container body such that it...
Reissue logic for individually reissuing instructions trapped in a
multiissue stack based computing system
An execution unit that executes multiple instructions as a single instruction group during a single processing cycle is provided. The execution unit handles...
Method, apparatus and computer program product for selecting a predictor
to minimize exception traps from a...
Apparatus, methods, and computer program products are disclosed that improve the operation of a computer that uses a top-of-stack cache by reducing the number of...
Thread-local synchronization construct cache
A method and apparatus for synchronizing objects with threads is described. To find a specific synchronization construct that is to be used to synchronize a...
Software interrupt mechanism
An interrupt mechanism for an operating system is portable to different data processing hardware. The interrupt mechanism includes a software interrupt...
System and method for modifying membership in a clustered distributed
computer system and updating system...
Multiple nodes can concurrently gain membership in a cluster of nodes of a distributed computer system by broadcasting reconfiguration messages to all nodes of...
Method and apparatus for providing analog output and managing channels
on a multiple channel digital media server
A method and apparatus for providing analog output and managing channels on a multiple channel digital media server are provided. A mapping is established...
System for reminding a sender of an email if recipient of the email does
not respond by a selected time set by...
A system for warning the sender of e-mail messages if the messages are not received is described. The system permits the sender of a message to designate whether...
High speed serial link for fully duplexed data communication
A system for converting between parallel data and serial data is described. In the system 10, individual bits of the parallel data 12 are latched into individual...
Disc brake and anti-squeal shim therefor
An anti-squeal shim comprises a metal plate and a compound layer applied only to one face of the metal plate. The compound includes a nonmetal fiber other than...
Circuit and method for replacement of address translations
A circuit used to control the modification of content within memory implemented within an address translation unit. This memory includes a plurality of entries...
Method and apparatus for managing stored objects
In accordance with the present invention a method is provided for managing objects during a garbage collection operation. The process comprises the steps of...