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OPTI INC
US37 patents
Top patents by PatentIndex Score
US5371880ADec 6, 1994
Bus synchronization apparatus and method
OPTI INC126 citations98
US5469555ANov 21, 1995
Adaptive write-back method and apparatus wherein the cache system operates in a combination of write-back and write-through modes for a cache-based microprocessor system
OPTI INC110 citations97
US5933611AAug 3, 1999
Dynamic scheduler for time multiplexed serial bus
OPTI INC67 citations96
US5805905ASep 8, 1998
Method and apparatus for arbitrating requests at two or more levels of priority using a single request line
OPTI INC56 citations96
US5710906AJan 20, 1998
Predictive snooping of cache memory for master-initiated accesses
OPTI INC103 citations96
US5423019AJun 6, 1995
Automatic cache flush with readable and writable cache tag memory
OPTI INC58 citations96
US5287481AFeb 15, 1994
Automatic cache flush with readable and writable cache tag memory
OPTI INC136 citations96
US6567875B1May 20, 2003
USB data serializer
OPTI INC65 citations95
US5918072AJun 29, 1999
System for controlling variable length PCI burst data using a dummy final data phase and adjusting the burst length during transaction
OPTI INC41 citations93
US5907857AMay 25, 1999
Refresh-ahead and burst refresh preemption technique for managing DRAM in computer system
OPTI INC43 citations93
US5881271AMar 9, 1999
System and method for clock management
OPTI INC26 citations93
US5854638ADec 29, 1998
Unified memory architecture with parallel access by host and video controller
OPTI INC62 citations93
US5577214ANov 19, 1996
Programmable hold delay
OPTI INC26 citations93
US5448742ASep 5, 1995
Method and apparatus for local memory and system bus refreshing with single-port memory controller and rotating arbitration priority
OPTI INC24 citations93
US5414827AMay 9, 1995
Automatic cache flush
OPTI INC41 citations93
US6138177AOct 24, 2000
System and method of pin programming and configuration
OPTI INC25 citations92
US5463759AOct 31, 1995
Adaptive write-back method and apparatus wherein the cache system operates in a combination of write-back and write-through modes for a cache-based microprocessor system
OPTI INC29 citations92
US5900016AMay 4, 1999
System for using a cache memory with a write-back architecture
OPTI INC20 citations91
US5813036ASep 22, 1998
Predictive snooping of cache memory for master-initiated accesses
OPTI INC23 citations91
US5768624AJun 16, 1998
Method and apparatus for employing ping-pong buffering with one level deep buffers for fast DRAM access
OPTI INC34 citations91
US5550515AAug 27, 1996
Multiphase clock synthesizer having a plurality of phase shifted inputs to a plurality of phase comparators in a phase locked loop
OPTI INC101 citations91
US5309568AMay 3, 1994
Local bus design
OPTI INC36 citations91
US6029251AFeb 22, 2000
Method and apparatus for temperature sensing
OPTI INC25 citations90
US5790831AAug 4, 1998
VL-bus/PCI-bus bridge
OPTI INC127 citations90
US5426739AJun 20, 1995
Local bus - I/O Bus Computer Architecture
OPTI INC79 citations89
US5905887AMay 18, 1999
Clock frequency detection for computer system
OPTI INC25 citations83
US5890002AMar 30, 1999
System and method for bus master emulation
OPTI INC18 citations83
US5822768AOct 13, 1998
Dual ported memory for a unified memory architecture
OPTI INC22 citations80
US7523245B1Apr 21, 2009
Compact ISA-bus interface
OPTI INC6 citations74
US6098141AAug 1, 2000
Compact ISA-bus interface
OPTI INC6 citations74
US5968151AOct 19, 1999
System and method of positively determining ISA cycle claiming
OPTI INC10 citations74
US5944807AAug 31, 1999
Compact ISA-bus interface
OPTI INC4 citations74
US6405291B1Jun 11, 2002
Predictive snooping of cache memory for master-initiated accesses
OPTI INC5 citations72
US5860113AJan 12, 1999
System for using a dirty bit with a cache memory
OPTI INC13 citations71
US5639979AJun 17, 1997
Mode selection circuitry for use in audio synthesis systems
OPTI INC15 citations67
US5719345AFeb 17, 1998
Frequency modulation system and method for audio synthesis
OPTI INC4 citations58
US5974495AOct 26, 1999
Using a back-off signal to bridge a first bus to a second bus
OPTI INC3 citations55