초록 ▼

An apparatus for controlling an amplitude of a signal generated from a digitized sinusoid of rapidly and widely varying amplitude is described herein. The apparatus includes a two stage gain adjuster which produces a gain adjusted signal, a phase shifter which converts the gain adjusted signal into

An apparatus for controlling an amplitude of a signal generated from a digitized sinusoid of rapidly and widely varying amplitude is described herein. The apparatus includes a two stage gain adjuster which produces a gain adjusted signal, a phase shifter which converts the gain adjusted signal into two gain adjusted output signals separated in phase by 90 degrees, a power estimation unit to estimate the power of the gain adjusted signal, and an adjusting unit to adjust a gain of the gain adjuster according to a power estimate from the power estimation unit and a desired output signal power.

대표청구항 ▼

An apparatus for controlling an amplitude of a signal generated from a digitized sinusoid of rapidly and widely varying amplitude is described herein. The apparatus includes a two stage gain adjuster which produces a gain adjusted signal, a phase shifter which converts the gain adjusted signal into

An apparatus for controlling an amplitude of a signal generated from a digitized sinusoid of rapidly and widely varying amplitude is described herein. The apparatus includes a two stage gain adjuster which produces a gain adjusted signal, a phase shifter which converts the gain adjusted signal into two gain adjusted output signals separated in phase by 90 degrees, a power estimation unit to estimate the power of the gain adjusted signal, and an adjusting unit to adjust a gain of the gain adjuster according to a power estimate from the power estimation unit and a desired output signal power. driver to drive into the curve.8. The curve approach control apparatus according to claim 1, whereinsaid controlling unit executes at least one of an alarm control and a deceleration control for the curve in front of the vehicle.9. A method for curve approach control for a driver of a vehicle comprising: detecting a vehicle running condition on a road approaching an intersection of a curve and a straight road:controlling the performing of at least one of an alarm control and a deceleration control for a curve in front of a vehicle; anddeciding a driver's intention whether the driver intends to travel straight on said straight road or to turn into the curve based on said vehicle running condition,said deciding a driver's intention to travel straight is carried out by comparing an actual measured value of a turning motion parameter of said vehicle and an estimated value of a turning motion estimated from said vehicle speed and a curve's radius of curvature and determining that the driver intends to travel straight when the actual measured value of a turning motion parameter of said vehicle is less than or equal to the estimated value of the turning motion parameter of the vehicle thereby indicating that a straight travel state is decided by the driver,wherein said controlling, based on determining a straight travel state, inhibits an execution of at least one of the alarm control and the deceleration control when it is determined that the driver intends to travel straight.10. A curve approach control apparatus mounted on a vehicle, comprising: a running condition detecting means for detecting a running condition of said vehicle;a controlling unit for performing at least one of an alarm control and a deceleration control for a curve in front of said vehicle based on at least said vehicle running condition so as to enable the vehicle to turn into the curve safely;intersection detecting means for detecting an intersection in the road in front of said vehicle;deciding means for determining whether a driver intends to travel straight through the intersection or to turn at the intersection by detecting a straight travel state of said vehicle based on said vehicle running condition;and for determining that the driver intends to travel straight when a straight travel state of said vehicle is detected,said deciding means determines said straight travel state by comparing an actual measured value of a turning motion parameter of said vehicle and an estimated value of a turning motion parameter estimated from said vehicle speed and a curve's radius of curvature and for determining that the driver intends to travel straight when the actual measured value of a turning motion parameter of said vehicle is less than or equal to the estimated value of the turning motion parameter of the vehicle thereby indicating that a straight travel state is decided by the driver,wherein said controlling unit, based on said deciding means determining a straight travel state, inhibits the execution of said alarm or deceleration for controlling said vehicle when the driver intends to travel straight through said intersection.11. The curve approach control apparatus according to claim 10, whereinsaid intersection detecting means includesa navigation device for storing road information within a set range of vehicle travel route in front of said vehicle and for directing the driver,wherein said controlling unit inhibits an execution of controlling said vehicle when said deciding means determines that the driver intends to travel straight through said intersection even if said navigation device directs the driver to turn at said intersection instead of going straight.12. The curve approach control apparatus according to claim 11, whereinsaid straight travel state is detected by comparing an actual detected value of turning motion parameter of an estimated value of turning motion estimated based on said vehicle running condition and a curve's radius of said intersection calculated based on the road map information.13. The curve approach control apparatus according to claim 11, whereinsaid deciding means determines that the driver intends to travel straight through the intersection when said vehicle is in an accelerating state at a predetermined range in front of the intersection.14. The curve approach control apparatus according to claim 11, whereinsaid deciding means determines that the driver intends to travel straight through the intersection based on said straight travel state and when said vehicle is in an accelerating state at a perdetermined range in front of the intersection,wherein said straight travel state is detected by comparing an actual detected value of turning motion parameter of an estimated value of turning motion estimated based on said vehicle running condition and a radius of said curve of said intersection calculated based on the road map information.15. The curve approach control apparatus according to claim 10, whereinsaid intersection detecting means includesa navigation device for storing road information within a set range of vehicle travel route in front of said vehicle and for directing the driver,a road shape detection device for detecting road shape including at least a position of an intersection ahead of said vehicle by processing an image of the road in front of said vehicle taken by a pair of cameras,wherein said deciding means determines whether the driver intends to travel straight through said intersection or to turn at said intersection when the output information about the intersection from both said navigation device and the road shape detection device coincides with each other.