Abstract: A trajectory input system of an embodiment includes a plurality of pen-shaped terminals that respectively store unique ID data; and a display configured to receive trajectory data inputted by one of the plurality of pen-shaped terminals that contacts a surface of the display, in which the pen-shaped terminal detects input of the trajectory data to the display while the pen-shaped terminal is in proximity to the surface of the display and is within 10 mm from the surface of the display or while the pen-shaped terminal is in contact with the surface of the display, and transmits the unique ID data to the display, and the display manages the trajectory data by linking the unique ID to the trajectory data.

Abstract: An image pickup system according to embodiments includes an image pickup unit, a receiving unit, an operation unit, and a determination unit. The image pickup unit picks up an optical image formed by an optical system by means of an image pickup element to obtain an image. The receiving unit receives a radio signal including unique information transmitted from a transmitter to output the received signal. The operation unit operates an arrival angle of the radio signal based on the received signal. The determination unit determines, based on the arrival angle, whether or not the transmitter is within an angle of view of the image.

Abstract: It is an object of the present invention to provide the voltage controlled oscillation circuit preventing the influence of a capacitor in the output side of the loop filter connected to a control voltage terminal. A voltage controlled oscillation circuit comprising of an amplifier circuit, a resonance circuit, a varactor diode, a choke element whose one end is connected to the cathode of a varactor diode, a capacitor connected between the other end of the choke element and a ground, and a resistor connected between the other end of the choke element and a control voltage terminal. A sub-resonance of the resonance system of the voltage controlled oscillation circuit due to the capacitor in the output side of the loop filter connected to the control voltage terminal can be eliminated, the abnormal oscillation of the voltage controlled oscillation circuit can be prevented, and the relationship between the oscillation frequency and the control voltage exhibits almost linear.

Abstract: A multilayered ceramic substrate which includes at least two types of ceramic layers respectively containing different ceramic materials, and which can be produced by simultaneous firing without causing layer peeling is described. A green composite laminated product is prepared in a state in which two substrate green sheets respectively contain different types of low-temperature sintered ceramic materials, and a shrinkage inhibiting green sheet containing an inorganic material which is not sintered at the sintering temperature of each of the low-temperature sintered ceramic material is arranged between the two substrate green sheets, followed by firing.

Abstract: It is an object of the present invention to provide the voltage controlled oscillation circuit preventing the influence of a capacitor in the output side of the loop filter connected to a control voltage terminal. A voltage controlled oscillation circuit comprising of an amplifier circuit, a resonance circuit, a varactor diode, a choke element whose one end is connected to the cathode of a varactor diode, a capacitor connected between the other end of the choke element and a ground, and a resistor connected between the other end of the choke element and a control voltage terminal. A sub-resonance of the resonance system of the voltage controlled oscillation circuit due to the capacitor in the output side of the loop filter connected to the control voltage terminal can be eliminated, the abnormal oscillation of the voltage controlled oscillation circuit can be prevented, and the relationship between the oscillation frequency and the control voltage exhibits almost linear.