초록

A conditional TAWS algorithm, system and method for providing advanced warnings of potential hazard situations which could result from changes in heading and vertical speed.

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A conditional TAWS algorithm, system and method for providing advanced warnings of potential hazard situations which could result from changes in heading and vertical speed. the phase comparator to latch the comparison result signal and generate the mode switch signal . 7. A mode control circuit

A conditional TAWS algorithm, system and method for providing advanced warnings of potential hazard situations which could result from changes in heading and vertical speed. the phase comparator to latch the comparison result signal and generate the mode switch signal . 7. A mode control circuit for mode controlling a phase-locked loop (PLL) circuit having a high-speed mode in which a high-speed lockup operation is performed and a normal mode in which a normal PLL operation is performed, wherein the PLL circuit compares the phase of a reference signal and the phase of a comparison signal to generate a first pulse signal and a second pulse signal, and generates based on the first and second pulse signals a frequency signal that is locked at a desired frequency, wherein the mode control circuit receives the first and the second pulse signals from the PLL circuit, generates a mode switch signal representing the normal mode when a difference between a phase of the first pulse signal and a phase of the second pulse signal is within a predetermined range, and, after the mode is switched from the high-speed mode to the normal mode, generates the mode switch signal such that the normal mode is maintained, and wherein the mode control circuit comprising: a phase comparator for comparing the phase of the first pulse signal and the phase of the second pulse signal to generate a comparison result signal; and a latch circuit connected to the phase comparator to latch the comparison result signal and generate the mode switch signal, wher