9results about "Generator starter" patented technology

Oscillator and Method of Using an Oscillator This description concerns an oscillator (400) comprising: - a first connection terminal (130) and a second connection terminal (135); - an amplifier (115) connected between the first connection terminal (130) and the second connection terminal (135); and - a circuit (410) configured to generate an inductance between the first connection terminal (130) and the second connection terminal (135), the oscillator being configured to be connected to a crystal (150) between the first connection terminal (130) and the second connection terminal (135), and the amplifier (115) being configured to drive the crystal (150). Figure for the abbreviation: Fig. 4

An oscillator arrangement is provided, comprising a relaxation oscillator (2) having an active state and an inactive state; a bias current circuit portion (16) arranged to provide a bias current (14) to the relaxation oscillator (2) during said active state; and an electronic switch (12) arranged to isolate said relaxation oscillator (2) from the bias current circuit portion (16) when in said inactive state. The oscillator arrangement is arranged to store an internal voltage value associated with said bias current (14) and the bias current circuit portion (16) is arranged to use the stored internal voltage value to generate the bias current (14) when the oscillator (2) is started up from the inactive state to the active state.

Disclosed in the present invention is a high-frequency crystal oscillator based on automatic phase error correction. The high-frequency crystal oscillator comprises a high-frequency crystal, a load capacitor, two single-pole double-throw switches, a ring oscillator, an 8-frequency-dividing circuit, a twisted ring counter, a peak detector, a buffer, a digital module, a multiplexer and an amplifier. In the present invention, when a circuit performs energy injection on a high-frequency crystal, a phase error between an injection signal and a crystal oscillation signal is also detected and automatically corrected, such that the phase error is always less than 45 degrees. The present invention ensures the continuous and efficient linear growth in the energy inside a high-frequency crystal, and greatly shortens the starting time required for the crystal to reach a stable oscillation amplitude, thereby realizing rapid starting; and on the basis of automatic phase error correction technology,

A circuit device is configured to switching between a first mode in which phase noise of an output clock signal is lower than that in a second mode and the second mode in which power consumption is smaller than that in the first mode, and the circuit device includes an oscillation circuit configured to generate an oscillation signal, a waveform shaping circuit configured to perform waveform shaping on the oscillation signal to obtain a rectangular wave clock signal; and an output circuit configured to output the output clock signal based on the clock signal. A driving capability of the waveform shaping circuit in the first mode is higher than a driving capability of the waveform shaping circuit in the second mode.

A control device coupled to an oscillator circuit and including a first output circuit, a synchronizer circuit, a hysteresis circuit, a stable circuit, and a second output circuit is provided. The first output circuit activates an oscillator circuit according to an activation signal so that the oscillator circuit generates an input clock. The synchronizer circuit synchronizes the activation signal to generate a synchronization signal. The synchronization signal is synchronized with the input clock. The hysteresis circuit directs the first output circuit to disable the oscillator circuit according to the synchronization signal. The stable circuit enables a transmission signal according to the input clock. When the transmission signal is enabled, the second output circuit uses the input clock as an output clock.

The application discloses a self-adaptive method for starting a passive crystal oscillator, and the method comprises the following steps: a. dividing a crystal oscillator starting process into N stages, each stage corresponding to a starting scheme; b. enabling the crystal oscillator to start; c. executing a first starting scheme to enter a starting process of a first stage; d. judging whether the crystal oscillator starts or not, and if not, executing step e; e. executing a next starting scheme to enter a starting process of a next stage; and f. repeatedly executing steps d-e until the crystal oscillator starts.

Disclosed in the present invention is a high-frequency crystal oscillator based on automatic phase error correction. The high-frequency crystal oscillator comprises a high-frequency crystal, a load capacitor, two single-pole double-throw switches, a ring oscillator, an 8-frequency-dividing circuit, a twisted ring counter, a peak detector, a buffer, a digital module, a multiplexer and an amplifier. In the present invention, when a circuit performs energy injection on a high-frequency crystal, a phase error between an injection signal and a crystal oscillation signal is also detected and automatically corrected, such that the phase error is always less than 45 degrees. The present invention ensures the continuous and efficient linear growth in the energy inside a high-frequency crystal, and greatly shortens the starting time required for the crystal to reach a stable oscillation amplitude, thereby realizing rapid starting; and on the basis of automatic phase error correction technology.

The invention relates to oscillator circuits, corresponding systems and methods. A relaxation oscillator circuit includes one or more oscillator cores configured to generate an oscillating signal based on a controlled current applied thereto via a current flow line. The controlled current has a reduced standby value during a standby state of the oscillator circuit. The start-up circuit block is activated during a start-up phase of the oscillator circuit in response to a start-up enable signal asserted using a controlled current having a reduced standby value. The start-up circuit block includes a start-up current generator configured to generate a start-up current and to apply the start-up current from the start-up current generator to the oscillator core or one of the oscillator cores during a start-up phase.

An oscillator circuit of the relaxation type includes one or more oscillator cores configured to produce an oscillation signal based on controlled currents applied thereto via a current flow line. The controlled current has a reduced stand-by value during a stand-by state of the oscillator circuit. A startup circuit block is activated during a startup phase of the oscillator circuit in response to a startup enable signal asserted with the controlled current having the reduced stand-by value. The startup circuit block comprises a startup current generator configured to produce a startup current and to apply to the oscillator core or one of the oscillator cores during the startup phase the startup current from the startup current generator.