US Patent No: 6,931,086

Number of patents in Portfolio can not be more than 2000

Method and apparatus for generating a phase dependent control signal

ALSO PUBLISHED AS: 20020154721

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A phase detector generates a phase dependent control signal according to the phase relationship between a first and second clock signal. The phase detector includes first and second phase detector circuits receiving the first and second clock signals and generating select signals having duty cycles corresponding to the phase relationship between the clock edges of the first and second clock signals. The phase detector also includes a charge pump that receives select signals from the phase detector circuits and produces an increasing or decreasing control signal when the first and second clock signals do not have the predetermined phase relationship, and a non-varying control signal when the first and second clock signals do have the predetermined phase relationship. The control signal may be used to adjust the delay value of a voltage-controlled delay circuit in order to adjust the phase relationship between the first and second clock signals to have a predetermined phase relationship.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
ROUND ROCK RESEARCH, LLCBOISE, ID3733

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harrison, Ronnie M Boise, ID 62 1037

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ROUND ROCK RESEARCH, LLC (28)
5,276,642 Method for performing a split read/write operation in a dynamic random access memory 105 1991
5,544,124 Optimization circuitry and control for a synchronous memory device with programmable latency period 118 1995
5,636,173 Auto-precharge during bank selection 173 1995
5,692,165 Memory controller with low skew control signal 168 1995
5,627,791 Multiple bank memory with auto refresh to specified bank 216 1996
6,115,318 Clock vernier adjustment 81 1996
5,852,378 Low-skew differential signal converter 113 1997
5,920,518 Synchronous clock generator including delay-locked loop 120 1997
5,940,608 Method and apparatus for generating an internal clock signal that is synchronized to an external clock signal 119 1997
5,831,929 Memory device with staggered data paths 185 1997
6,484,244 Method and system for storing and processing multiple memory commands 28 1997
6,005,823 Memory device with pipelined column address path 62 1997
6,173,432 Method and apparatus for generating a sequence of clock signals 97 1997
5,953,284 Method and apparatus for adaptively adjusting the timing of a clock signal used to latch digital signals, and memory device using same 86 1997
6,011,732 Synchronous clock generator including a compound delay-locked loop 213 1997
5,926,047 Synchronous clock generator including a delay-locked loop signal loss detector 71 1997
5,940,609 Synchronous clock generator including a false lock detector 106 1997
6,101,197 Method and apparatus for adjusting the timing of signals over fine and coarse ranges 139 1997
6,269,451 Method and apparatus for adjusting data timing by delaying clock signal 45 1998
6,016,282 Clock vernier adjustment 261 1998
6,338,127 Method and apparatus for resynchronizing a plurality of clock signals used to latch respective digital signals, and memory device using same 61 1998
6,029,250 Method and apparatus for adaptively adjusting the timing offset between a clock signal and digital signals transmitted coincident with that clock signal, and memory device and system using same 371 1998
6,430,696 Method and apparatus for high speed data capture utilizing bit-to-bit timing correction, and memory device using same 155 1998
6,026,050 Method and apparatus for adaptively adjusting the timing of a clock signal used to latch digital signals, and memory device using same 179 1999
6,378,079 Computer system having memory device with adjustable data clocking 75 2000
6,327,196 Synchronous memory device having an adjustable data clocking circuit 57 2000
6,499,111 Apparatus for adjusting delay of a clock signal relative to a data signal 45 2001
6,665,222 Synchronous dynamic random access memory device 50 2003
 
RAMBUS INC. (22)
5,243,703 Apparatus for synchronously generating clock signals in a data processing system 403 1992
5,473,575 Integrated circuit I/O using a high performance bus interface 112 1992
5,355,391 High speed bus system 324 1992
5,390,308 Method and apparatus for address mapping of dynamic random access memory 164 1992
5,254,883 Electrical current source circuitry for a bus 354 1992
5,268,639 Testing timing parameters of high speed integrated circuit devices 121 1992
5,337,285 Method and apparatus for power control in devices 145 1993
5,451,898 Bias circuit and differential amplifier having stabilized output swing 132 1993
5,432,823 Method and circuitry for minimizing clock-data skew in a bus system 351 1994
5,430,676 Dynamic random access memory system 123 1994
5,513,327 Integrated circuit I/O using a high performance bus interface 205 1994
5,485,490 Method and circuitry for clock synchronization 256 1994
5,446,696 Method and apparatus for implementing refresh in a synchronous DRAM system 123 1994
5,578,940 Modular bus with single or double parallel termination 160 1995
5,488,321 Static high speed comparator 106 1995
5,621,340 Differential comparator for amplifying small swing signals to a full swing output 106 1995
5,614,855 Delay-locked loop 304 1995
5,657,481 Memory device with a phase locked loop circuitry 117 1996
6,125,157 Delay-locked loop circuitry for clock delay adjustment 206 1997
6,014,042 Phase detector using switched capacitors 35 1998
6,101,152 Method of operating a synchronous memory device 142 1998
6,067,592 System having a synchronous memory device 63 1999
 
MICRON TECHNOLOGY, INC. (20)
4,958,088 Low power three-stage CMOS input buffer with controlled switching 116 1989
5,165,046 High speed CMOS driver circuit 186 1990
5,128,563 CMOS bootstrapped output driver method and circuit 113 1990
5,150,186 CMOS output pull-up driver 122 1991
5,128,560 Boosted supply output driver circuit for driving an all N-channel output stage 210 1991
5,278,460 Voltage compensating CMOS input buffer 135 1992
5,274,276 Output driver circuit comprising a programmable circuit for determining the potential at the output node and the method of implementing the circuit 145 1992
5,311,481 Wordline driver circuit having a directly gated pull-down device 114 1992
5,347,179 Inverting output driver circuit for reducing electron injection into the substrate 113 1993
5,506,814 Video random access memory device and method implementing independent two WE nibble control 101 1993
5,361,002 Voltage compensating CMOS input buffer 128 1993
5,400,283 RAM row decode circuitry that utilizes a precharge circuit that is deactivated by a feedback from an activated word line driver 100 1993
5,497,355 Synchronous address latching for memory arrays 50 1994
5,555,429 Multiport RAM based multiprocessor 53 1995
5,508,638 Low current redundancy fuse assembly 117 1995
5,578,941 Voltage compensating CMOS input buffer circuit 109 1995
5,657,289 Expandable data width SAM for a multiport RAM 57 1995
5,805,931 Programmable bandwidth I/O port and a communication interface using the same port having a plurality of serial access memories capable of being configured for a variety of protocols 55 1996
5,574,698 Ram row decode circuitry that utilizes a precharge circuit that is deactivated by a feedback from an activated word line driver 101 1996
6,438,043 Adjustable I/O timing from externally applied voltage 39 1998
 
TEXAS INSTRUMENTS INCORPORATED (8)
4,638,451 Microprocessor system with programmable interface 71 1983
4,687,951 Fuse link for varying chip operating parameters 83 1984
5,220,208 Circuitry and method for controlling current in an electronic circuit 109 1991
5,430,408 Transmission gate circuit 63 1994
5,544,203 Fine resolution digital delay line with coarse and fine adjustment stages 172 1994
5,576,645 Sample and hold flip-flop for CMOS logic 96 1995
5,572,722 Time skewing arrangement for operating random access memory in synchronism with a data processor 74 1995
5,841,707 Apparatus and method for a programmable interval timing generator in a semiconductor memory 72 1996
 
INTEL CORPORATION (7)
5,410,263 Delay line loop for on-chip clock synthesis with zero skew and 50% duty cycle 105 1993
5,489,864 Delay interpolation circuitry 77 1995
5,621,690 Nonvolatile memory blocking architecture and redundancy 140 1995
5,652,530 Method and apparatus for reducing clock-data skew by clock shifting 74 1995
5,621,739 Method and apparatus for buffer self-test and characterization 116 1996
5,990,719 Adaptive filtering scheme for sampling phase relations of clock networks 52 1997
6,298,450 Detecting states of signals 39 1999
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (7)
5,020,023 Automatic vernier synchronization of skewed data streams 73 1989
5,272,729 Clock signal latency elimination network 104 1991
5,557,224 Apparatus and method for generating a phase-controlled clock signal 52 1994
5,577,236 Memory controller for reading data from synchronous RAM 163 1994
5,568,075 Timing signal generator 64 1995
5,673,005 Time standard circuit with delay line oscillator 40 1995
5,712,580 Linear phase detector for half-speed quadrature clocking architecture 82 1996
 
MITSUBISHI DENKI KABUSHIKI KAISHA (7)
4,953,128 Variable delay circuit for delaying input data 144 1987
5,313,431 Multiport semiconductor memory device 77 1992
5,552,727 Digital phase locked loop circuit 85 1994
5,568,077 Latch circuit 91 1995
5,668,774 Dynamic semiconductor memory device having fast operation mode and operating with low current consumption 67 1996
5,666,313 Semiconductor memory device with complete inhibition of boosting of word line drive signal and method thereof 29 1996
5,708,611 Synchronous semiconductor memory device 90 1997
 
KABUSHIKI KAISHA TOSHIBA (5)
5,233,564 Multiport memory with test signal generating circuit controlling data transfer from RAM port to SAM port 50 1991
5,253,360 Facsimile device having continuous operating capabilities immediately after recovery from trouble and related method 5 1992
5,675,274 Semiconductor clock signal generation circuit 72 1995
5,774,699 System controller for controlling switching operations of various operation clocks for CPU, DRAM, and the like 48 1996
5,926,436 Semiconductor memory device 53 1998
 
MOTOROLA, INC. (5)
4,508,983 MOS Analog switch driven by complementary, minimally skewed clock signals 61 1983
4,573,017 Unitary phase and frequency adjust network for a multiple frequency digital phase locked loop 65 1984
4,893,087 Low voltage and low power frequency synthesizer 96 1988
5,256,989 Lock detection for a phase lock loop 78 1991
5,428,317 Phase locked loop with low power feedback path and method of operation 58 1994
 
FUJITSU SEMICONDUCTOR LIMITED (4)
5,668,763 Semiconductor memory for increasing the number of half good memories by selecting and using good memory blocks 110 1996
5,740,123 Semiconductor integrated circuit for changing pulse width according to frequency of external signal 74 1997
6,147,905 Non-volatile semiconductor memory device 47 1999
6,147,916 Semiconductor memory device with precharge voltage correction circuit 60 1999
 
NATIONAL SEMICONDUCTOR CORPORATION (4)
4,984,255 Edge transition insensitive delay line system and method 67 1989
5,304,952 Lock sensor circuit and method for phase lock loop circuits 57 1993
6,285,726 10/100 mb clock recovery architecture for switches, repeaters and multi-physical layer ports 70 1998
6,194,917 XOR differential phase detector with transconductance circuit as output charge pump 21 1999
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (3)
5,283,631 Programmable capacitance delay element having inverters controlled by adjustable voltage to offset temperature and voltage supply variations 109 1991
5,473,639 Clock recovery apparatus with means for sensing an out of lock condition 68 1993
5,581,197 Method of programming a desired source resistance for a driver stage 115 1995
 
CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC. (3)
5,946,244 Delay-locked loop with binary-coupled capacitor 130 1997
6,327,318 Process, voltage, temperature independent switched delay compensation scheme 58 1998
6,262,921 Delay-locked loop with binary-coupled capacitor 49 2000
 
HITACHI, LTD. (3)
4,746,996 Skew error correction circuit for video signal reproducing apparatus 37 1985
5,281,865 Flip-flop circuit 124 1991
5,794,020 Data transfer apparatus fetching reception data at maximum margin of timing 62 1996
 
NEC CORPORATION (3)
5,572,557 Semiconductor integrated circuit device including PLL circuit 65 1994
5,764,092 Delay clock generator for generating a plurality of delay clocks delaying the basic clock 64 1996
5,631,872 Low power consumption semiconductor dynamic random access memory device by reusing residual electric charge on bit line pairs 95 1996
 
NEC ELECTRONICS CORPORATION (3)
5,315,269 Phase-locked loop 61 1992
5,563,546 Selector circuit selecting and outputting voltage applied to one of first and second terminal in response to voltage level applied to first terminal 68 1994
5,424,687 PLL frequency synthesizer and PLL frequency synthesizing method capable of obtaining high-speed lock-up and highly-reliable oscillation 55 1994
 
PS4 LUXCO S.A.R.L. (3)
5,638,335 Semiconductor device 91 1996
5,781,499 Semiconductor memory device 56 1996
5,768,177 Controlled delay circuit for use in synchronized semiconductor memory 63 1997
 
RENESAS ELECTRONICS CORPORATION (3)
5,420,544 Semiconductor integrated circuit, method of designing the same and method of manufacturing the same 138 1993
5,444,667 Semiconductor synchronous memory device having input circuit for producing constant main control signal operative to allow timing generator to latch command signals 128 1994
5,636,163 Random access memory with a plurality amplifier groups for reading and writing in normal and test modes 95 1996
 
UNISYS CORPORATION (3)
5,289,580 Programmable multiple I/O interface controller 175 1991
5,898,242 Self-calibrating clock circuit employing a continuously variable delay module in a feedback loop 47 1993
5,594,690 Integrated circuit memory having high speed and low power by selectively coupling compensation components to a pulse generator 64 1995
 
ADVANCED MICRO DEVICES, INC. (2)
5,233,314 Integrated charge-pump phase-locked loop circuit 129 1992
5,964,884 Self-timed pulse control circuit 60 1997
 
CREDENCE SYSTEMS CORPORATION (2)
5,712,883 Clock signal distribution system 63 1996
6,105,157 Salphasic timing calibration system for an integrated circuit tester 63 1998
 
FUJITSU LIMITED (2)
4,727,541 Hierarchical data transmission system 93 1985
5,675,588 Testing apparatus for transmission system 55 1995
 
LAPIS SEMICONDUCTOR CO., LTD. (2)
5,646,904 Semicoductor memory with a timing controlled for receiving data at a semiconductor memory module to be accessed 84 1995
5,751,665 Clock distributing circuit 94 1996
 
LOCKHEED MARTIN CORPORATION (2)
5,122,690 Interface circuits including driver circuits with switching noise reduction 169 1990
5,168,199 Horizontal linearity correction circuitry for cathode ray tube display 30 1991
 
LSI LOGIC CORPORATION (2)
5,953,386 High speed clock recovery circuit using complimentary dividers 62 1996
5,872,959 Method and apparatus for parallel high speed data transfer 78 1996
 
PARADYNE CORPORATION (2)
5,898,674 System and method for performing non-disruptive diagnostics through a frame relay circuit 82 1997
6,038,219 User-configurable frame relay network 120 1997
 
SAMSUNG ELECTRONICS CO., LTD. (2)
5,062,082 Semiconductor memory device with delay in address predecoder circuit independent from ATD 47 1991
5,812,619 Digital phase lock loop and system for digital clock recovery 73 1996
 
SGS-THOMSON MICROELECTRONICS, INC. (2)
5,428,311 Fuse circuitry to control the propagation delay of an IC 112 1993
5,579,326 Method and apparatus for programming signal timing 64 1994
 
VLSI TECHNOLOGY, INC. (2)
5,416,909 Input/output controller circuit using a single transceiver to serve multiple input/output ports and method therefor 59 1992
5,557,781 Combination asynchronous cache system and automatic clock tuning device and method therefor 53 1993
 
XCERRA CORPORATION (2)
4,902,986 Phased locked loop to provide precise frequency and phase tracking of two signals 89 1989
5,075,569 Output device circuit and method to minimize impedance fluctuations during crossover 83 1990
 
XEROX CORPORATION (2)
5,223,755 Extended frequency range variable delay locked loop for clock synchronization 160 1990
5,130,565 Self calibrating PWM utilizing feedback loop for adjusting duty cycles of output signal 48 1991
 
ZENITH INVESTMENTS, LLC (2)
5,402,389 Synchronous memory having parallel output data paths 98 1994
5,440,514 Write control for a memory using a delay locked loop 123 1994
 
ACTICON TECHNOLOGIES LLC (1)
4,972,470 Programmable connector 216 1987
 
ADVANTEST (SINGAPORE) PTE LTD (1)
5,589,788 Timing adjustment circuit 114 1995
 
ADVANTEST CORPORATION (1)
5,440,260 Variable delay circuit 101 1994
 
ALCATEL USA, CORP. (1)
5,515,403 Apparatus and method for clock alignment and switching 102 1994
 
AMERICAN TELEPHONE AND TELEGRAPH COMPANY (1)
5,463,337 Delay locked loop based clock synthesizer using a dynamically adjustable number of delay elements therein 129 1993
 
ANALOG DEVICES, INC. (1)
5,120,990 Apparatus for generating multiple phase clock signals and phase detector therefor 50 1990
 
Anico Research, Ltd. Inc. (1)
4,603,320 Connector interface 88 1983
 
APPLE INC. (1)
5,295,164 Apparatus for providing a system clock locked to an external clock over a wide range of frequencies 109 1991
 
AT&T Bell Laboratories (1)
5,194,765 Digitally controlled element sizing 207 1991
 
AT&T IPM CORP. (1)
5,448,193 Normalization of apparent propagation delay 83 1994
 
BELL COMMUNICATIONS RESEARCH, INC. (1)
4,773,085 Phase and frequency detector circuits 105 1987
 
Bell Telephone Laboratories, Incorporated (1)
4,514,647 Chipset synchronization arrangement 76 1983
 
Burr-Brown Corporation (1)
5,694,065 Switching control circuitry for low noise CMOS inverter 115 1995
 
CIENA CORPORATION (1)
5,719,508 Loss of lock detector for master timing generator 56 1996
 
CONVERSANT IP N.B. 868 INC. (1)
6,087,857 Clock signal phase comparator 35 1997
 
DDK LTD. (1)
5,087,828 Timing circuit for single line serial data 73 1991
 
DIGITAL EQUIPMENT CORPORATION (1)
5,539,345 Phase detector apparatus 79 1992
 
DUCCI ENTERPRISES IT, L.L.C. (1)
5,778,214 Bit-phase aligning circuit 94 1995
 
ELUMINANT TECHNOLOGIES, INC. (1)
5,473,274 Local clock generator 73 1992
 
ELXSI CORPORATION, A DE CORP. (1)
4,481,625 High speed data bus system 175 1981
 
ENTERASYS NETWORKS, INC. (1)
5,341,405 Data recovery apparatus and methods 66 1994
 
FRANCE TELECOM (1)
5,416,436 Method for time delaying a signal and corresponding delay circuit 74 1993
 
GENERAL INSTRUMENT CORPORATION (1)
5,315,388 Multiple serial access memory for use in feedback systems such as motion compensated television 98 1991
 
GLOBALFOUNDRIES INC. (1)
5,239,206 Synchronous circuit with clock skew compensating function and circuits utilizing same 120 1992
 
HEWLETT-PACKARD COMPANY (1)
6,442,644 Memory system having synchronous-link DRAM (SLDRAM) devices and controller 262 1998
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
5,408,640 Phase delay compensator using gating signal generated by a synchronizer for loading and shifting of bit pattern to produce clock phases corresponding to frequency changes 65 1992
 
HITACHI VLSI ENGINEERING CORP. (1)
4,984,204 High speed sensor system using a level shift circuit 146 1989
 
HONDA GIKEN KOGYO KABUSHIKI KAISHA (1)
5,229,929 Output peak current correction for PWM invertors 35 1991
 
HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. (1)
5,502,672 Data output buffer control circuit 41 1995
 
IC WORKS, INC. (1)
6,377,646 Spread spectrum at phase lock loop (PLL) feedback path 99 1998
 
INFINEON TECHNOLOGIES AG (1)
5,321,368 Synchronized, digital sequential circuit 97 1993
 
INTEGRATED SILICON SOLUTION, INC. (1)
5,550,783 Phase shift correction circuit for monolithic random access memory 61 1995
 
INTELLECTUAL PROPERTIES I KFT. (1)
5,619,473 Semiconductor memory device with dual address memory read amplifiers 103 1995
 
INTELLECTUAL VENTURES II LLC (1)
5,636,174 Fast cycle time-low latency dynamic random access memories and systems and methods using the same 140 1996
 
JAZIO, INC. (1)
6,160,423 High speed source synchronous signaling for interfacing VLSI CMOS circuits to transmission lines 125 1998
 
JVC KENWOOD CORPORATION (1)
5,577,079 Phase comparing circuit and PLL circuit 36 1995
 
Leica Geosystems Inc. (1)
6,023,489 Method and apparatus for code synchronization in a global positioning system receiver 40 1995
 
LG SEMICON CO., LTD. (1)
5,438,545 Data output buffer of semiconductor memory device for preventing noises 100 1994
 
MAGNACHIP SEMICONDUCTOR, LTD. (1)
6,295,328 Frequency multiplier using delayed lock loop (DLL) 60 1998
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
5,179,298 CMOS buffer circuit which is not influenced by bounce noise 122 1991
 
MAXTOR CORPORATION (1)
5,737,342 Method for in-chip testing of digital circuits of a synchronously sampled data detection channel 85 1996
 
MICROCHIP TECHNOLOGY INCORPORATED (1)
5,889,829 Phase locked loop with improved lock time and stability 58 1997
 
MILAN JANKOVIC (1)
5,134,311 Self-adjusting impedance matching driver 302 1990
 
Minnesota Mining and Manufacturing Company (1)
4,600,895 Precision phase synchronization of free-running oscillator output signal to reference signal 75 1985
 
MOSYS, INC. (1)
5,498,990 Reduced CMOS-swing clamping circuit for bus lines 133 1995
 
MOTOROLA MOBILITY LLC (1)
5,822,314 Communications system and method of operation 66 1996
 
MYERS, GLEN A. (1)
5,038,115 Method and apparatus for frequency independent phase tracking of input signals in receiving systems and the like 109 1990
 
NEC ELECTRONICS, INC. (1)
5,666,322 Phase-locked loop timing controller in an integrated circuit memory 133 1995
 
NIPPON TELEGRAPH AND TELEPHONE CORPORATION (1)
4,818,995 Parallel transmission system 62 1987
 
Nippondenso Co., Ltd. (1)
5,465,076 Programmable delay line programmable delay circuit and digital controlled oscillator 117 1993
 
NXP B.V. (1)
4,789,796 Output buffer having sequentially-switched output 120 1986
 
OKI SEMICONDUCTOR CO., LTD. (1)
5,311,483 Synchronous type semiconductor memory 168 1993
 
OPTI INC. (1)
5,550,515 Multiphase clock synthesizer having a plurality of phase shifted inputs to a plurality of phase comparators in a phase locked loop 68 1995
 
RCA Corporation (1)
4,404,474 Active load pulse generating circuit 112 1981
 
RPX CORPORATION (1)
5,945,855 High speed phase lock loop having high precision charge pump with error cancellation 77 1997
 
SARNOFF CORPORATION (1)
5,497,127 Wide frequency range CMOS relaxation oscillator with variable hysteresis 101 1994
 
SCHLUMBERGER SYSTEMS AND SERVICES, INC. (1)
4,511,846 Deskewing time-critical signals in automatic test equipment 71 1982
 
SEIKO NPC CORPORATION (1)
5,789,947 Phase comparator 67 1996
 
SGS-THOMSON MICROELECTRONICS LIMITED (1)
5,627,780 Testing a non-volatile memory 98 1995
 
SGS-THOMSON MICROELECTRONICS S.R.L. (1)
5,663,921 Internal timing method and circuit for programmable memories 55 1995
 
SIEMENS MEDICAL SOLUTIONS USA, INC. (1)
5,767,715 Method and apparatus for generating timing pulses accurately skewed relative to clock 62 1995
 
SIEMENS NIXDORF INFORMATIONSSYSTEME AG (1)
4,524,448 Variable delay unit for data synchronizer using phase-sensitive counter to vary the delay 60 1982
 
SIGMATEL, INC. (1)
6,526,111 Method and apparatus for phase locked loop having reduced jitter and/or frequency biasing 27 1998
 
SILICON GRAPHICS INTERNATIONAL, CORP. (1)
5,790,612 System and method to reduce jitter in digital delay-locked loops 97 1996
 
SLORAM, INC. (1)
5,917,760 De-skewing data signals in a memory system 196 1997
 
SONY CORPORATION (1)
5,590,073 Random access memory having flash memory 119 1994
 
SONY ELECTRONICS INC. (1)
5,457,407 Binary weighted reference circuit for a variable impedance output buffer 165 1994
 
SPX CORPORATION (1)
5,532,714 Method and apparatus for combining video images on a pixel basis 55 1994
 
ST. CLAIR INTELLECTUAL PROPERTY CONSULTANTS, INC. (1)
5,086,500 Synchronized system by adjusting independently clock signals arriving at a plurality of integrated circuits 99 1989
 
STMICROELECTRONICS, INC. (1)
5,367,649 Programmable controller 51 1990
 
SYNOPSYS, INC. (1)
5,500,808 Apparatus and method for estimating time delays using unmapped combinational logic networks 64 1995
 
The Johns Hopkins University (1)
5,379,299 High speed propagation delay compensation network 61 1993
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
5,182,524 Method and apparatus for stabilizing pulsed microwave amplifiers 38 1992
 
TORREFY CONSULTING LLC (1)
6,026,134 Phase locked loop (PLL) with linear parallel sampling phase detector 91 1997
 
TRANSCRYPT INTERNATIONAL, INC. (1)
5,784,422 Apparatus and method for accurate synchronization with inbound data packets at relatively low sampling rates 72 1996
 
VTC C-MOS INCORPORATED (1)
4,638,187 CMOS output buffer providing high drive current with minimum output signal distortion 211 1985
 
WESTERN DIGITAL TECHNOLOGIES, INC. (1)
5,212,601 Disk drive data synchronizer with window shift synthesis 66 1991
 
WINBOND ELECTRONICS CORP. (1)
5,257,294 Phase-locked loop circuit and method 106 1990
 
Other [Check patent profile for assignment information] (1)
5,347,177 System for interconnecting VLSI circuits with transmission line characteristics 142 1993

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MICRON TECHNOLOGY, INC. (5)
7,180,370 CMOS amplifiers with frequency compensating capacitors 2 2004
7,417,505 CMOS amplifiers with frequency compensating capacitors 0 2006
7,202,739 CMOS amplifiers with frequency compensating capacitors 2 2006
7,339,431 CMOS amplifiers with frequency compensating capacitors 3 2007
7,705,677 CMOS amplifiers with frequency compensating capacitors 4 2008
 
ROUND ROCK RESEARCH, LLC (4)
7,889,593 Method and apparatus for generating a sequence of clock signals 2 2007
8,107,580 Method and apparatus for generating a phase dependent control signal 1 2009
8,565,008 Method and apparatus for generating a sequence of clock signals 0 2011
8,433,023 Method and apparatus for generating a phase dependent control signal 0 2012
 
HITACHI, LTD. (1)
8,456,205 Phase-frequency comparator and serial transmission device 1 2011
 
HYNIX SEMICONDUCTOR INC. (1)
7,826,583 Clock data recovery apparatus 3 2007
 
INTEL CORPORATION (1)
7,334,148 Optimization of integrated circuit device I/O bus timing 2 2004
 
LSI LOGIC CORPORATION (1)
7,020,793 Circuit for aligning signal with reference signal 10 2003
 
NATIONAL CHUNG CHENG UNIVERSITY (1)
7,756,236 Phase detector 0 2007

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 16, 2017
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00