1. An electrostatically-drivencapacitance-detection type gyro sensor comprising:
a sensing element including
a movable part displaceable in a motion plane,
a first electrode provided in said movable part and applied with a bias voltage;
a second electrode applied with a drive signal to generate an electrostatic force acting on said movable part in order that said movable part vibrates along a first direction on said motion plane,
a third electrode forming a first variable capacitor with said movable part, a capacitance of said first variable capacitor varying in accordance with a displacement of said movable part along said first direction, and
a fourth electrode forming a second variable capacitor with said movable part, a capacitance of said second variable capacitor varying in accordance with a displacement of said movable part along a second direction on said motion plane, said second direction being orthogonal to said first direction;
a reference voltage generator generating, from a power supply voltage supplied from outside said gyro sensor, a reference voltage which is constant irrespective of variation of said power supply voltage;
a bias voltage generator generating said bias voltage by amplifying said reference voltage;
a capacitance-voltage converter converting said capacitance of said first variable capacitance into a first voltage signal whose voltage level varies following variation of said capacitance of said first variable capacitor, and converting said capacitance of said second variable capacitance into a second voltage signal whose voltage level varies following variation of said capacitance of said second variable capacitor;
a drive signal generator generating said drive signal by amplifying and phase-adjusting said first voltage signal, said drive signal having an offset voltage proportional to said reference voltage; and
a sensor output signal generator generating, from said second voltage signal, a sensor output signal having a magnitude corresponding to said voltage level of said second voltage signal, said sensor output signal having an offset voltage proportional to said power supply voltage.
2. The gyro sensor according to claim 1, wherein said drive signal generator includes a phase shifter for phase-shifting said first voltage signal in order that said drive signal has a phase allowing said movable part continues to vibrate along said first direction, and an amplifier for amplifying said first voltage signal in order that said drive signal has such an amplitude as to keep an amplitude of displacement of said movable part along said first direction is kept constant.
3. The gyro sensor according to claim 1, wherein said drive signal generator includes a phase shifter for phase-shifting said first voltage signal in order that said drive signal has a phase allowing said movable part continues to vibrate along said first direction, and an amplifier for amplifying said first voltage signal in order that said drive signal has such an amplitude as to keep an amplitude of displacing velocity of said movable part along said first direction is kept constant.
4. The gyro sensor according to claim 1, wherein said drive signal generator includes a phase shifter for phase-shifting said first voltage signal in order that said drive signal has a phase allowing said movable part continues to vibrate along said first direction, and said sensor output signal generator includes an amplifier amplifying said second voltage signal, said amplifier having a gain which is proportional to said power supply voltage and has a temperature characteristic compensating for a temperature characteristic of said second voltage signal.
5. The gyro sensor according to claim 1, wherein said drive signal generator includes a phase shifter for phase-shifting said first voltage signal in order that said drive signal has a phase allowing said movable part continues to vibrate along said first direction, and said sensor output signal generator includes an amplifier amplifying said second voltage signal, said amplifier having a gain which is inversely proportional to an amplitude of said first voltage signal and proportional to said power supply voltage.
6. The gyro sensor according to claim 1, wherein, said drive signal generator includes a phase shifter for phase-shifting said first voltage signal by differentiating said first voltage signal in order that said drive signal has a phase allowing said movable part continues to vibrate along said first direction, and said sensor output signal generator includes an amplifier amplifying said second voltage signal, said amplifier having a gain which is inversely proportional to an amplitude of a derivative of said first voltage signal and proportional to said power supply voltage.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A gaming machine comprising:
a main body including a main display on which a game image is displayed which is arranged in a substantially horizontal posture and a sub display on which a portion of the game image is displayed in an enlarged manner and which is arranged contiguously with the main body;
an aiming controller being configured to be movable over the main display and indicating an aiming position on the game image displayed on the main display;
first display control device performing a display control of the game image on the main display;
aiming position detection device detecting the aiming position on the game image indicated by the aiming controller; and
second display control device performing an enlarged display control of a portion of the game image on the sub display such that the portion of the game image includes the aiming position detected by the aiming position detection device.
2. A gaming machine according to claim 1, wherein the aiming controller is constituted as a magnifying glass.
3. A gaming machine according to claim 1, wherein the second display control device performs the enlarged display control of the portion of the game image on the sub display such that the portion of the game image includes an image which is not included in the game image displayed on the main display.
4. A gaming machine according to claim 1, wherein the aiming position detection device detects the aiming position on the game image indicated by the aiming controller based on the measured result obtained by the sensor for measuring direction andor position of the aiming controller.
5. A gaming machine according to claim 1, wherein the sub display is arranged in a vertical posture.
6. A gaming machine according to claim 1, wherein the sub display is mounted on a deep end of the main display in an upright manner.