Abstract: A light curtain installation method, which is a method for adjusting or checking an installation state of a light curtain for detecting an operation with respect to an image plane of a display apparatus, includes: determining whether or not it is possible to detect an object that comes into contact with a target region on the image plane which corresponds to a reference pixel which is a pixel at a predetermined position; and setting a drive state of the reference pixel such that the drive state of the reference pixel is different depending on a result of the determining.

Abstract: An interactive display method includes: having an image signal inputted from an external device; displaying an image on an image screen on the basis of a display signal; detecting an operation to the image screen; drawing an operation input object corresponding to the operation to the image screen; outputting the display signal for displaying a combined image formed by combining an external image based on the image signal and the operation input object; detecting a change in an attribute of the image signal or in the image signal; and link-editing the operation input object so as to correspond to a change in the external image when a change in the attribute of the image signal or in the image signal is detected.

Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.

Abstract: An interactive display method includes an image signal input step of receiving an image signal from an external apparatus, a display step of displaying an image on a screen on the basis of a display signal, an operation detection step of detecting an operation for an operation region of the screen, a region setting step of setting a rectangle, in which an external image based on the image signal is accommodated and of which at least one side overlaps a side of the external image, as the operation region according to the external image, and a drawing step of outputting the display signal for displaying the external image.

Abstract: An image processing apparatus includes a display control section that controls a projection device to project a correction image, a captured image data acquisition section that acquires the correction image, a judgment section that judges, when the correction image expressed by the captured image data is placed in a plane with a coordinate system, which of the following functions: a function representing a straight line; and a function representing a curved line is used to make image correction based on the distance between the correction image and at least one of a line expressed by the function representing a straight line and a line expressed by the function representing a curved line, and a presentation section that presents a user with an operation screen for correction using the function judged by the judgment section.

Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.

Abstract: A position detection device includes a detection section adapted to detect an operation to a screen, a detection control section adapted to discriminate the pointing element with which the operation is performed, and then associate the operation with the pointing element, and a processing section adapted to process the operation associated with the pointing element out of the operations. In the case in which a first operation and a second operation, which is performed within a predetermined period of time before the first operation, with a single pointing element are detected, and a coordinate of the first operation and a coordinate of the second operation are located within a predetermined range, the detection control section determines the coordinate of the first operation as the same coordinate as the coordinate of the second operation. Further, the detection control section changes the predetermined range in accordance with the pointing element.

Abstract: A position detection device includes a detection section adapted to detect an operation to a screen, a detection control section adapted to identify the pointing element with which the operation is performed, and associate the operation with the pointing element, and a processing section adapted to process the operation associated with the pointing element out of the operations. In the case in which a first operation and a second operation, which is performed within a predetermined period of time before the first operation, with a single pointing element are detected, and a coordinate of the first operation and a coordinate of the second operation are located within a predetermined range, the detection control section treats the coordinate of the first operation as the same coordinate as the coordinate of the second operation. Further, the detection control section changes the predetermined range in accordance with the detection position in the screen.

Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.

Abstract: A display device includes: an acquisition unit which acquires a first image from an image supply device; a detection unit which specifies a position of the indicator and whether the indicator is a first indicator or a second indicator; a generation unit which generates a second image based on the specified position and generates a third image by superimposing the second image on the first image; a display unit which displays the third image; a designation unit which designates either the generation unit or the image supply device as a supply destination of information indicating a position of the second indicator; and a control unit which supplies the information indicating the position of the indicator to the generation unit if the detected indicator is the first indicator, and supplies the information indicating the position of the indicator to the supply destination if the detected indicator is the second indicator.

Abstract: When a power amplifier mounted in mobile communications equipment, such as a mobile-phone, is composed of a balanced amplifier, technology with which the loss of the electric power composition in a power combiner can be reduced is provided. According to the technical idea of the present embodiment, by dividing an isolation capacitor element into two capacitor elements with high symmetry and coupled in parallel, it is possible to make almost equal parasitic capacitance arising from these capacitor elements, even when the capacitor elements are formed as interlayer capacitor elements of the wiring substrate.

Abstract: A bidirectional display method includes: receiving an image signal inputted from an external device; displaying an image on a screen on the basis of a display signal; detecting an operation on the screen; outputting the display signal for displaying the image formed by combining an external image based on the image signal and an operation input object corresponding to the operation on the screen; detecting a predetermined operation as a movement instruction; and outputting the display signal for displaying the external image moved in a direction toward a side of the screen when the movement instruction is detected.

Abstract: A projection system includes a projector and a light emitting device that emits detection light in a direction in response to a screen. The projector detects an operation to the screen based on detection light of the light emitting device by a position detection section and switches the light emitting device between an emission mode and a non-emission mode thereof in response to state of the projector.

Abstract: When image data which does not satisfy set conditions is input from a device which outputs image data, a display apparatus prevents a distortion of display. The display device includes a display unit that displays an image based on image data input from the PC, a connection control unit that executes connection control of setting transmission conditions including transmission line capacity of the image data to be output from the PC by transmitting and receiving control information to and from the PC, an input data determination unit that determines whether or not the image data to be input from the PC satisfies the transmission conditions, after the connection control, and a display control unit that sets a display state with the display unit as a predetermined display state, when it is determined that the image data to be input from the PC does not satisfy the transmission conditions.

Abstract: A both-direction display method includes: inputting an image signal from an external device; displaying an image on a screen on the basis of a display signal; detecting an operation for the screen as an image operation; drawing an operation input object corresponding to the image operation; outputting the display signal for displaying a composite image obtained by combining an external image on the basis of the image signal and the operation input object; detecting an interlocking operation; and editing the operation input object so as to follow a change of the external image in accordance with the interlocking operation.

Abstract: When image data which does not satisfy set conditions is input from a device which outputs the image data, a display apparatus performs normal display. The display apparatus includes a display unit which displays an image based on the image data input from the PC, a connection control unit which executes connection control of setting transmission conditions including transmission line capacity of the image data to be output from the PC by transmitting and receiving control information to and from the PC, and an input data determination unit which determines whether or not the image data to be input from the PC satisfies the transmission conditions, after the connection control. When the image data to be input from the PC does not satisfy the transmission conditions, the connection control unit requests re-execution of the connection control with respect to the PC.

Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.

Abstract: An image processing apparatus includes a display control section that controls a projection device to project a correction image, a captured image data acquisition section that acquires the correction image, a judgment section that judges, when the correction image expressed by the captured image data is placed in a plane with a coordinate system, which of the following functions: a function representing a straight line; and a function representing a curved line is used to make image correction based on the distance between the correction image and at least one of a line expressed by the function representing a straight line and a line expressed by the function representing a curved line, and a presentation section that presents a user with an operation screen for correction using the function judged by the judgment section.

Abstract: A power amplifier includes a first amplifier and a second amplifier which include large and small size elements. An RF input signal is amplified by the first and second amplifiers. An output of the first amplifier is connected to an input of a first output matching circuit. An output of the second amplifier is connected to an input of a second output matching circuit. An output of the second output matching circuit is connected to an RF signal output terminal. In a high power state, the RF input signal is amplified by the first amplifier. In a low power state, the RF input signal is amplified by the second amplifier. In amplification with low power and high frequency, reactances of the second output matching circuit are set at predetermined values. In amplification with low power and low frequency, the reactances of the second output matching circuit are set at larger values.

Abstract: A power amplifier includes a first amplifier and a second amplifier which include large and small size elements. An RF input signal is amplified by the first and second amplifiers. An output of the first amplifier is connected to an input of a first output matching circuit. An output of the second amplifier is connected to an input of a second output matching circuit. An output of the second output matching circuit is connected to an RF signal output terminal. In a high power state, the RF input signal is amplified by the first amplifier. In a low power state, the RF input signal is amplified by the second amplifier. In amplification with low power and high frequency, reactances of the second output matching circuit are set at predetermined values. In amplification with low power and low frequency, the reactances of the second output matching circuit are set at larger values.