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Patent for Sale:

IC Chip Design Technology    

On chip circuits

Overview

Inventions relate to high frequency clock signal distribution systems, multi-frequency clock generator systems, and edge-triggered self-resetting pulse generators. Other patents disclose rapid sensing circuits sensitive to small voltage changes, high slew rate drivers, multi-bit binary comparator circuits, ring oscillator circuits, and improved data retention sense amplifiers.

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Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 327: Miscellaneous Active Electrical Nonlinear Devices, Circuits, And Systems

This is the residual class for electrical devices, circuits or systems having an output not directly proportional to its input and comprising at least one component which can provide gain or can route electrical current and which device, circuit or system does not form a complete system such as is classified specifically elsewhere or a subcombination of utility only in such elsewhere classified system.

Subclass 108: Current driver
Subclass 115: Frequency division
Subclass 141: Synchronizing
Subclass 142: Reset (e.g., initializing, starting, stopping, etc.)
Subclass 161: With delay means
Subclass 184: Rectangular (e.g., clock, etc.) or pulse waveform generating by conversion from input AC (e.g., sine, etc.) wave
Subclass 199: Circuit having only two stable states (i.e., bistable)
Subclass 261: Having specific delay in producing output waveform
Subclass 291: Clock or pulse waveform generating
Subclass 292: Clock fault compensation or redundant clocks
Subclass 294: With common output
Subclass 295: Plural outputs
Subclass 296: Plural clock outputs with multiple inputs
Subclass 374: Accelerating switching
Subclass 387: Control signal derived from or responsive to input signal
Subclass 389: Insulated gate FET (e.g., MOSFET, etc.)
Subclass 40: Comparison between plural inputs
Subclass 415: Diverging with single input and plural outputs
Subclass 51: With sensing amplifier
Subclass 52: Differential amplifier
Subclass 54: Having feedback
Subclass 55: Cross-coupled

Class 326: Electronic Digital Logic Circuitry

This is the generic class for electronic digital logic devices, circuitry and subcombinations thereof, wherein non-arithmetical operations are performed upon discrete electrical signals representing a value normally described by numerical digits.

Subclass 17: ACCELERATING SWITCHING
Subclass 30: Bus or line termination (e.g., clamping, impedance matching, etc.)
Subclass 31: Signal level or switching threshold stabilization
Subclass 68: Field-effect transistor (e.g., JFET, MOSFET, etc.)
Subclass 93: CLOCKING OR SYNCHRONIZING OF LOGIC STAGES OR GATES

Class 710: Electrical Computers And Digital Data Processing Systems: Input/Output

This class provides, within a computer or digital data processing system with the following processes or apparatus for 1. transferring data from one or more peripherals to one or more computers or digital data processing systems for the latter to process, store, or further transfer or for transferring data from the computers or digital data processing systems to the peripherals; 2. for interconnecting or communicating between two or more components connected to an interconnection medium (e.g., a bus) within a single computer or digital data processing system; 3. for preventing access to a shared resource of a computer or digital data processing system; 4. for granting access to a shared resource of a computer of digital data processing system by one of a plurality of components of the computer or digital data processing system by interrogating each of the components in a predetermined order; 5. for determining which of a plurality of components of a computer or digital data processing system contending for access to a shared resource shall be granted access at any one time based upon a predetermined criteria; and 6. for stopping, halting, or suspending a current processing function within a computer or digital data processing system.

Subclass 52: Input/Output data buffering

Class 713: Electrical Computers And Digital Processing Systems: Support

This class provides, within a computer or digital data processing system, for the following processes or apparatus for: 1. establishing original operating parameters or data for a computer or digital data processing system, such as, allocating extended or expanded memory, specifying device drivers, paths, files, buffers, disk management, etc.; 2. for changing system settings or operational modes in a computer or digital data processing system after they have been set; 3. for increasing a systemís extension of protection of system hardware,software, or data frm maliciously caused destruction, unauthorized modification, or unauthorized disclosure; 4. for modifying or responding to the available power to a computer or digital data processing system or programmable calculator; 5. for synchronization of two or more processors; 6. wherein a clock or timing signals, timing pulses, or data associated with the control or regulation of any one or combination of processing components, memory components, and peripheral components are caused to operate in synchronization; 7. for generation, division, or distribution of clock signals, pulse signals, or timing signals in a computer or digital data processing system from one or more sources into groups of continuous and successive time increments, and including event timing and counting, and the correction of the clock signals, pulse signals, or timing signals; 8. wherein there is a significant temporal, incremental or sequencing control provided to one or more computers, digital data processing systems, processors, memory, or peripherals, or to data transmission between these systems or components.

Subclass 400: SYNCHRONIZATION OF CLOCK OR TIMING SIGNALS, DATA, OR PULSES
Subclass 401: Using delay
Subclass 503: Correction for skew, phase, or rate
Subclass 600: CLOCK CONTROL OF DATA PROCESSING SYSTEM, COMPONENT, OR DATA TRANSMISSION

Class 340: Communications: Electrical

Communications - the handling of information or intelligence, restricted to the conveying of said information or intelligence between geographically spaced points. Information or intelligence is defined as being, matter which is handled by signaling systems or signaling devices (such as telegraph systems) or by that portion of nonsignaling systems or nonsignaling devices (such as power supply systems) which is designated in the arts as having a control function (such as the supervisory circuits which control the circuit breakers of an electric power network). Handling, as used above, is defined as being the active coaction between the tangible communication system or device and the intangible information or intelligence, and such coaction may assume various forms, such as transmission, storage, exhibiting, etc.

Subclass 146.2: DIGITAL COMPARATOR SYSTEMS

Class 330: Amplifiers

This is the generic class for amplifiers, included: Amplifiers having all types of active elements (or amplifying devices), amplifier systems having plural amplifier channels, cascade amplifiers, push-pull amplifiers and other amplifiers having plural amplifier devices. Also included are amplifiers with plural signal sources or plural loads. Amplifiers including the means coupling the signal source to the amplifier or coupling the amplifier to the load or between cascaded stages are also included. Amplifiers combined with tone control means. Amplifiers combined with amplitude (volume) control means whether by manual control, by control of an electrode D.C. bias. Amplifiers combined with power supply. Amplifiers combined with structural features of the amplifier or the amplifier circuit elements. Amplifiers having signal feedback means.

Subclass 258: Having common mode rejection circuit

Class 365: Static Information Storage And Retrieval

Apparatus or corresponding processes for the static storage and retrieval of information. For classification herein, the storage system must be (1) static, (2) a singular storage element or plural elements of the same type, (3) addressable.

Subclass 189.05: Having particular data buffer or latch
Subclass 189.09: Including reference or bias voltage generator
Subclass 191: Signals
Subclass 193: Strobe

Class 257: Active Solid-State Devices (E.G., Transistors, Solid-State Diodes)

This class provides for active solid-state electronic devices, that is, electronic devices or components that are made up primarily of solid materials, usually semiconductors, which operate by the movement of charge carriers - electrons or holes - which undergo energy level changes within the material and can modify an input voltage to achieve rectification, amplification, or switching action, and are not classified elsewhere.

Subclass 173: Device protection (e.g., from overvoltage)
Subclass 200: Heterojunction formed between semiconductor materials which differ in that they belong to different periodic table groups (e.g., Ge (group IV) - GaAs (group III-V) or InP (group III-V) - CdTe (group II-VI))
Subclass 357: In complementary field effect transistor integrated circuit

Class 331: Oscillators

This is the generic class for electrical oscillators.

Subclass 57: RING OSCILLATORS