Pulse Automatic Control TRIZ Cases

A switchable start-up circuit helps low-current crystal oscillators start reliably at high temperature and low voltage while cutting standby power.

A delay detection unit gates DLL clock output in synchronous memory to cut current consumption and reduce read timing errors.

A shared oscillator and divider create overlapping reception sub-bands, cutting tuner crosstalk, power use, and chip area.

When clock period or voltage shifts break DLL lock in SDRAM, reset-triggered rough delay updates restore phase alignment within 200 tCK.

A power-down detector holds latch and multiplexer output at a preset value to prevent LCD line defects and band mura during on/off.

A state-machine-controlled clock synthesizer reduces EMI while enabling programmable modulation and stable timing across PVT variations.

Periodic bias switching and stored capacitor energy cut oscillator power use while preserving wake-up timing for low-power circuit modes.

A latch-stored offset memory enables periodic offset correction in an op-amp, cutting switching noise, power use, test time, and chip size.

Additional parallel circuitry draws frequency-dependent current so intended oscillator current dominates parasitics and reduces phase jitter.

A single VCO with multi-ratio prescaling and divide-by-2.5 broadens frequency range while cutting chip size, power use, and circuit complexity.

A dual-mode phase detector speeds delay-lock loop acquisition by using dual-edge locking first, then single-edge tracking to avoid duty-cycle phase error.

Pulsed beacon timing separates uplink and downlink optical channels, reducing scattered-light noise and improving deep-space signal detection.

By varying delay on selected upconverted clock cycles, this case improves MDLL synchronization precision without full fine-grain control.

Switching-point inverters and weighted tail currents linearize CML delay-cell tuning while keeping output swing stable across rail-to-rail control.

A gain mismatch detector correlates phase error with modulation data to self-calibrate dual-port PLL RF modulators without offline tuning.

Threshold counting of phase detection results lets a DLL update delay values more reliably under irregular phase variations.

Dual charge pumps scale with the divider factor to keep PLL loop bandwidth and damping stable across resistance, voltage, and temperature changes.

Phase-aligned bit and byte clocks cut lane-lane skew below 1 UI while preserving low-latency bypass data paths across clock domains.

A majority filter and oscillation detector suppress DLL control signal oscillation, reducing lock time and power in high-frequency memory circuits.

Coarse and fine delay paths generate multiple phase-shifted internal clocks with duty correction for faster semiconductor memory data output.

Switched resistor units and R-2R arrays cancel receiver DC offset without transistor flicker noise, preserving dynamic range.

A delay variation detector and adjustable delay units keep DLL delay time stable across voltage and temperature changes for clock synchronization.

A dithered TDC feedback path in an ADPLL randomizes quantization errors to cut spurious tones and lower the noise floor.

A replica delay path and remaining-time detector let a delay-locked loop lock within one clock cycle, cutting update time and jitter.

By estimating data rate from sampled signal transitions, the receiver sets its PLL quickly for reliable clockless data recovery.

Clock delays are adjusted for different I/O pad path lengths to align output timing and improve semiconductor data output reliability.

Separate current paths for buffer and latch inverters help a delay-cell VCO keep low phase noise and jitter across a wide frequency range.

Phase-shifted interleaved latches let a charge pump regulator compare voltage multiple times per clock cycle, cutting ripple and response delay.

A DLL dynamically adjusts strobe lockout time to track clock, voltage, temperature, and process variation, reducing false bus noise indications.

Resonant oscillators tuned to the clock frequency stabilize a differential clock grid, reducing skew and jitter under PVT variation.

High startup gain is reduced after oscillation detection, limiting crystal noise loading and improving clock waveform and frequency stability.

Separate VCO control loops keep tuning signals in range, cutting noise and power while compensating temperature drift in carrier generation.

Preloading a new channel value into the PLL feedback divider during standby cuts re-lock time and current draw in FHSS channel switching.

Dual voltage detection with hysteresis stabilizes power-up signal transitions and prevents false resets under process, voltage, and temperature variation.

Sequential DLL power-down uses lock and phase-noise checks to cut power while preventing unstable clock signals and downstream errors.

Separate delay and correction paths preserve phase accuracy while fixing duty-cycle distortion in wide-range high-speed clock generation.

Pulse altering and temperature compensation tune a MEMS-based clock to target frequency, improving accuracy and stability without quartz.

A fractional-N synthesizer matches transmit clock frequency to the recovered receive clock, cutting jitter, cost, and power in serial links.

A latch and reset based detector identifies the first arriving signal each cycle to keep PLL control signals reliable near lock.

Wider increment and decrement pulses improve clock locking stability at high data rates by combining lower-frequency phase detection with delay control.

A low-frequency crystal drives both reference and multiplied output clocks through thermometer coding and PLL alignment to cut long-term jitter.

Dual voltage-current conversion paths let a PLL evaluate VCO characteristics without loop-filter leakage that disturbs output frequency.

A calibrated sampling clock replaces RC timing to detect SATA OOB signals accurately during idle states despite process variation.

A dual-mode free-running VCO self-calibrates through a PLL, cutting radar module size, noise-sensitive tuning paths, and extra VCO cost.

Digital gating of every p integral-current samples lets a dual-path PLL tune damping and bandwidth precisely while reducing silicon area.

A digital ramp and sigma-delta fractional-N approach generates accurate chirped RF sweeps with lower phase and frequency noise for radar.

A 90° shifted reference aligns digital and low-noise phase detectors, avoiding settling transients and asymmetric modulation in PLLs.

By selecting the lower sideband from VCO and divided-frequency mixing, this LO scheme shifts spurs away from critical RF channels.

Delayed multi-point sampling lets a single-loop CDR track large data-clock frequency differences with simpler logic and better lock stability.

Pulse-signal pairs replace PLL delay cells to keep multi-phase clock spacing constant while reducing circuit area, power, and noise sensitivity.