Assignee
ZENITH DATA SYSTEMS CORP
US·57 granted patents·2,942 citations·filing 1987–1996
Top patents by PatentIndex Score
57 records- 0198US5010426AInstallation mechanism for removable computer drive moduleZENITH DATA SYSTEMS CORP·Filed 1989·Granted Apr 23, 1991·128 cites·12 claims
- 0297US5446904ASuspend/resume capability for a protected mode microprocessorZENITH DATA SYSTEMS CORP·Filed 1992·Granted Aug 29, 1995·295 cites·9 claims
- 0393USD385857SPortable remote interface deviceZENITH DATA SYSTEMS CORP·Filed 1995·Granted Nov 4, 1997·57 cites·1 claims
- 0493US4982303ARemovable hard disk drive having a combination latch, lever and handleZENITH DATA SYSTEMS CORP·Filed 1988·Granted Jan 1, 1991·98 cites·12 claims
- 0592US5027294AMethod and apparatus for battery-power management using load-compensation monitoring of battery dischargeZENITH DATA SYSTEMS CORP·Filed 1989·Granted Jun 25, 1991·127 cites·67 claims
- 0692US4933910AMethod for improving the page hit ratio of a page mode main memory systemZENITH DATA SYSTEMS CORP·Filed 1988·Granted Jun 12, 1990·80 cites·3 claims
- 0791US5045960ASelf-aligning guide and track for removable disk drive moduleZENITH DATA SYSTEMS CORP·Filed 1989·Granted Sep 3, 1991·128 cites·13 claims
- 0890US5569052AComputer for use with a port replicatorZENITH DATA SYSTEMS CORP·Filed 1995·Granted Oct 29, 1996·60 cites·18 claims
- 0990US5541490AComputer power supply systemZENITH DATA SYSTEMS CORP·Filed 1994·Granted Jul 30, 1996·110 cites·3 claims
- 1089US5517648ASymmetric multiprocessing system with unified environment and distributed system functionsZENITH DATA SYSTEMS CORP·Filed 1995·Granted May 14, 1996·119 cites·3 claims
- 1189US5257143AMethod and apparatus for positioning head of disk drive using zone-bit-recordingZENITH DATA SYSTEMS CORP·Filed 1991·Granted Oct 26, 1993·62 cites·6 claims
- 1289US4980848AHeat-exchange panel for portable computerZENITH DATA SYSTEMS CORP·Filed 1988·Granted Dec 25, 1990·113 cites·12 claims
- 1386US5146578AMethod of varying the amount of data prefetched to a cache memory in dependence on the history of data requestsZENITH DATA SYSTEMS CORP·Filed 1991·Granted Sep 8, 1992·140 cites·14 claims
- 1485US5561361AComputer power supply and battery recharging systemZENITH DATA SYSTEMS CORP·Filed 1994·Granted Oct 1, 1996·70 cites·9 claims
- 1584US5184117AFluorescent backlight flicker control in an LCD displayZENITH DATA SYSTEMS CORP·Filed 1989·Granted Feb 2, 1993·49 cites·20 claims
- 1682US5498971AMethod and control circuit for measuring the temperature of an integrated circuitZENITH DATA SYSTEMS CORP·Filed 1995·Granted Mar 12, 1996·49 cites·17 claims
- 1782US5460547APort replicatorZENITH DATA SYSTEMS CORP·Filed 1993·Granted Oct 24, 1995·83 cites·8 claims
- 1881US5551033AApparatus for maintaining one interrupt mask register in conformity with another in a manner invisible to an executing programZENITH DATA SYSTEMS CORP·Filed 1992·Granted Aug 27, 1996·57 cites·9 claims
- 1980US5566383ADrive platform assembly with rotatable mounting brackets and automatic grounding bracketZENITH DATA SYSTEMS CORP·Filed 1995·Granted Oct 15, 1996·50 cites·15 claims
- 2080US5303171ASystem suspend on lid close and system resume on lid openZENITH DATA SYSTEMS CORP·Filed 1992·Granted Apr 12, 1994·96 cites·15 claims
- 2179US5280621APersonal computer having dedicated processors for peripheral devices interconnected to the CPU by way of a system control processorZENITH DATA SYSTEMS CORP·Filed 1993·Granted Jan 18, 1994·94 cites·22 claims
- 2274US5214364AMicroprocessor-based antenna rotor controllerZENITH DATA SYSTEMS CORP·Filed 1991·Granted May 25, 1993·53 cites·28 claims
- 2372US5394527AMethod and apparatus facilitating use of a hard disk drive in a computer system having suspend/resume capabilityZENITH DATA SYSTEMS CORP·Filed 1993·Granted Feb 28, 1995·27 cites·7 claims
- 2471US5129069AMethod and apparatus for automatic memory configuration by a computerZENITH DATA SYSTEMS CORP·Filed 1989·Granted Jul 7, 1992·49 cites·14 claims
- 2570USD364853SPort replicator for extending the functions of a portable personal computerZENITH DATA SYSTEMS CORP·Filed 1994·Granted Dec 5, 1995·14 cites·1 claims
- 2670US5297270AProgrammable cache memory which associates each section of main memory to be cached with a status bit which enables/disables the caching accessibility of the particular section, and with the capability of functioning with memory areas of varying sizeZENITH DATA SYSTEMS CORP·Filed 1993·Granted Mar 22, 1994·54 cites·15 claims
- 2770US4984209ABurst refresh of dynamic random access memory for personal computersZENITH DATA SYSTEMS CORP·Filed 1987·Granted Jan 8, 1991·26 cites·12 claims
- 2869US5123092AExternal expansion bus interfaceZENITH DATA SYSTEMS CORP·Filed 1988·Granted Jun 16, 1992·47 cites·16 claims
- 2968US5646817AAdjustable keyboardZENITH DATA SYSTEMS CORP·Filed 1996·Granted Jul 8, 1997·50 cites·21 claims
- 3068US5596480ASplit rotatable keyboardZENITH DATA SYSTEMS CORP·Filed 1994·Granted Jan 21, 1997·47 cites·4 claims
- 3167US5629604AComputer power supply systemZENITH DATA SYSTEMS CORP·Filed 1992·Granted May 13, 1997·30 cites·12 claims
- 3266USD368258SCombined portable battery charger cradle and floppy disk drive caseZENITH DATA SYSTEMS CORP·Filed 1994·Granted Mar 26, 1996·12 cites·1 claims
- 3366US4949934AComputer standZENITH DATA SYSTEMS CORP·Filed 1989·Granted Aug 21, 1990·45 cites·12 claims
- 3464US5446403APower on reset signal circuit with clock inhibit and delayed resetZENITH DATA SYSTEMS CORP·Filed 1994·Granted Aug 29, 1995·40 cites·16 claims
- 3564US5136694AMethod and apparatus facilitating communication between two keyboards and a single processorZENITH DATA SYSTEMS CORP·Filed 1989·Granted Aug 4, 1992·34 cites·23 claims
- 3663US5072450AMethod and apparatus for error detection and localizationZENITH DATA SYSTEMS CORP·Filed 1989·Granted Dec 10, 1991·34 cites·6 claims
- 3762US5157776AHigh speed memory for microcomputer systemsZENITH DATA SYSTEMS CORP·Filed 1989·Granted Oct 20, 1992·29 cites·14 claims
- 3856US5634079ASystem for providing for a parallel port with standard signals and a flash recovery mode with second predetermined signals redefining parallel port with alternate functionsZENITH DATA SYSTEMS CORP·Filed 1992·Granted May 27, 1997·33 cites·11 claims
- 3955US5042003AMemory usage systemZENITH DATA SYSTEMS CORP·Filed 1988·Granted Aug 20, 1991·21 cites·3 claims
- 4053US5353416ACPU lock logic for corrected operation with a posted write arrayZENITH DATA SYSTEMS CORP·Filed 1992·Granted Oct 4, 1994·25 cites·7 claims
- 4152US5317721AMethod and apparatus to disable ISA devices for EISA addresses outside the ISA rangeZENITH DATA SYSTEMS CORP·Filed 1989·Granted May 31, 1994·22 cites·3 claims
- 4251US5283889AHardware based interface for mode switching to access memory above one megabyteZENITH DATA SYSTEMS CORP·Filed 1993·Granted Feb 1, 1994·19 cites·6 claims
- 4350US5596713AMethod to prevent data loss in an electrically erasable read only memoryZENITH DATA SYSTEMS CORP·Filed 1995·Granted Jan 21, 1997·24 cites·15 claims
- 4449USD308862SPortable computerZENITH DATA SYSTEMS CORP·Filed 1988·Granted Jun 26, 1990·5 cites·1 claims
- 4548US5253350AMethod of combining lower order and translated upper order bits to address ROM within a range reserved for other devicesZENITH DATA SYSTEMS CORP·Filed 1990·Granted Oct 12, 1993·20 cites·7 claims
- 4644US5574866AMethod and apparatus for providing a data write signal with a programmable durationZENITH DATA SYSTEMS CORP·Filed 1995·Granted Nov 12, 1996·19 cites·19 claims
- 4744US5253352AMethod and apparatus for pipelining cache accesses using anticipatory initiation of cache readZENITH DATA SYSTEMS CORP·Filed 1989·Granted Oct 12, 1993·12 cites·10 claims
- 4843US5064378AMounting of DRAMs of different sizes and pinouts within limited footprintZENITH DATA SYSTEMS CORP·Filed 1988·Granted Nov 12, 1991·12 cites·3 claims
- 4941US5363486AVariable size queue circuit for buffering data transfers from a processor to a memoryZENITH DATA SYSTEMS CORP·Filed 1993·Granted Nov 8, 1994·14 cites·12 claims
- 5040US5557782AFlexible deterministic state machineZENITH DATA SYSTEMS CORP·Filed 1994·Granted Sep 17, 1996·13 cites·12 claims
Showing the top 50 of 57 patent records by PatentIndex Score.
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