Abstract: A high-frequency power module as a component of a radio communication system capable of performing communications in two frequency bands such as GSM and DCS and has a first transistor for output detection for receiving a signal which is the same as an input signal of a first power amplification transistor for amplifying a high frequency signal on the GSM side and a first current mirror circuit for passing current proportional to current of the transistor. A second transistor for output detection for receiving an input signal of a second power amplification transistor for amplifying a high frequency signal on the DCS side is also provided as is a second current mirror circuit for passing current proportional to current of the transistor. Conversion of current transferred from the first and second current mirror circuits to voltage is shared by the GSM and DCS.

Abstract: The present invention has as its object to automatically provide information about an object image-sensed by a camera and automatically image-sense and present an object described by browsed information while a user is browsing the information. To achieve this object, the present invention includes scope holding unit, picture operating unit, first instruction unit, picture display unit, map operating unit, second instruction unit, map display unit, document operating unit, third instruction unit, and document display unit.

Abstract: A negative feedback amplifier for a transmitter, in which a vector corrector outputs the corrected signals, an adder adds the feedback signals of the in-phase component and the quadrature component to the in-phase component and the quadrature component of the output of the vector corrector, respectively, a modulator performs a quadrature modulation with respect to the in-phase component and the quadrature component of the outputs from the adder, a power amplifier amplifies the output of the modulator, a demodulator performs a quadrature demodulation to a part of the output of the power amplifier and outputs the feedback signals of the in-phase component and the quadrature component, and the vector corrector performs a correcting operation of canceling an error of at least one of the phases and the amplitudes of the in-phase component and the quadrature component occurring in the demodulator.

Abstract: An imaging method and system that flexibly accesses light sensor elements and processes imaging signals. The imaging system comprises an array of pixel sensor cells, an array controller and a readout control circuit. The imaging system provides color interpolation.

Abstract: An integrated circuit and method for receiving and transmitting signals of different frequency bands utilizes a switching device on a bypass current path to selectively route incoming and outgoing signals by circumventing a capacitive device on a receive signal path. The bypass current path is used to selectively conduct current through a variable resistance device on a transmit signal path to transmit or block signals through the variable resistance device.

Abstract: In a receiver circuit for demodulating a high-frequency signal, a limiting amplifier stage with a downstream sigma-delta converter is connected in series with a mixer stage that transforms a high-frequency signal that is supplied at its input into an intermediate-frequency signal. The intermediate-frequency signal at the output of the limiting amplifier stage is value-discrete and time-continuous. The described receiver architecture has a high sensitivity, is substantially independent of production tolerances, and occupies a small area; therefore, it is particularly suitable for mobile radio applications.

Abstract: A sample acquisition apparatus for sampling first and second signals within a signal processing arrangement, includes a sampler for capturing sections of the waveforms of both the first and second signals, a switch for alternating correction of the sampler to a point in the arrangement where said first signal can be sampled and a point in said arrangement where said second signal can be sampled. A timer for timing the operation of the switch to causes the sampler to capture a first waveform section of the first signal and a second waveform section of the second signal, wherein the second signal is responsive to the first signal and the timing of the switch is such that the second section includes a portion that has been generated in response to the first section.

Abstract: The dynamic range is changed by switching a current applied to an amplifying circuit to obtain the minimum ICP required to keep linearity with the number of multiplexes even when the number of multiplexes of data is changed by switching the operation current of the amplifying circuits of the transmission system and also supplying the information about number of multiplexes of data to be transmitted to the amplifying circuits of the transmission system from the baseband circuit. Thereby, the signal can be transmitted without distortion even when the number of multiplexes increases and the current of the amplifying circuit may be reduced when the number of multiplexes is small in order to reduce the current consumption in the communication semiconductor integrated circuit device which can form a wireless communication system of the code division multiplex system such as W-CDMA system.

Abstract: An amplitude component and a phase component of a modulated signal are inputted into a power supply terminal and an input terminal of an RF power amplifier, respectively, and a modulated wave that is produced by demodulating an original modulated signal is obtained from the RF power amplifier. A supply voltage is supplied to an emitter follower and an operational amplifier via a switch group from a DC-DC converter group whose output voltages are sequentially different. As the supply voltage, any pair of outputs of DC-DC converters by the switch group is selected according to levels of the amplitude component, and provides them to the emitter follower and the operational amplifier. The emitter follower performs a DC conversion of the provided supply voltage to provide it to the RF power amplifier.

Abstract: Since the great number of elements constituting a unit pixel having an amplification function would hinder reduction of pixel size, unit pixel n,m arranged in a matrix form is comprised of a photodiode, a transfer switch for transferring charges stored in the photodiode, a floating diffusion for storing charges transferred by the transfer switch, a reset switch for resetting the floating diffusion, and an amplifying transistor for outputting a signal in accordance with the potential of the floating diffusion to a vertical signal line, and by affording vertical selection pulse ?Vn to the drain of the reset switch to control a reset potential thereof, pixels are selected in units of rows.

Abstract: A transmitter circuit (200, 400, 510) and method reduces amplitude modulation distortion in an amplifier (210). The transmitter circuit (200, 400, 510) includes a power control error data generator (230), a feedforward predistortion data generator (240), feedforward adder logic (250) and the amplifier (210). The power control error data generator (230) receives amplitude modulation data (252) and an RF coupled output signal (254) and, in response, produces power control error data (256). The feedforward predistortion data generator (240) receives the amplitude modulation data (252) and, in response, produces feedforward predistortion data (258). The feedforward adder logic (250) receives the power control error data (256) and the feedforward predistortion data (258) and, in response, produces power control data (260).

Abstract: The present invention provides a transmitter conforming to the EER method in a wide frequency band at high efficiency. For this purpose, the amplitude component of a modulated signal is input to the power supply terminal of a high-frequency power amplifier 130, the I and Q quadrature signals thereof are input to the high-frequency input terminal of the high-frequency power amplifier 130, and the original modulated signal is obtained from the output of the high-frequency power amplifier 130. A collector voltage is supplied from DC—DC converter group 615 having output voltages being different sequentially to an emitter follower 729 via a switch group 621.

Abstract: An image system uses an amplification-type MOS sensor for receiving an optical image through a photoelectric conversion element, converting the image into an electrical signal, and outputting the signal. This system includes an optical system for guiding this optical image to a predetermined position, an image processing means having a sensor for photoelectrically converting the optical image guided to the predetermined position by the optical system into an electrical signal in units of pixels, and a signal process device for processing an output from the image processing means, and outputting the resultant data.

Abstract: Method and system for a single-chip camera where an image sensor is a single-chip digital color imaging device that incorporates a sensor array that captures still or full-motion video and converts the images to digital data. Moreover, the image sensor employs a built-in correlated double sampler, an internal analog-to-digital converter, and a timing circuitry. Output from the sensor is an 8-bit or more raw data, horizontal sync signals, and vertical sync signals. The output raw data may then be fed into a compression circuit that generates packets of compressed output data. The compressed data is transmitted with a USB transceiver using isochronous packets. The packets are then received, decompressed, and color processed by a host PC.

Abstract: An emergency and non-emergency transmitter receivable by broadcast band receivers in nearby vehicles, comprising a first signal generator for simultaneously providing a plurality of selectively spaced carriers having frequency spacings corresponding to the individual channels of the band to be covered and selectively providing amplitude modulation when used for the AM broadcast band, and a second signal generator providing an FM modulated signal, which when combined with the signal from the first signal generator, covers various portions of the FM broadcast band to provide complete coverage thereof. A plurality of signals are generated in a portion of a selected band and modulated, according to the selected band mode, with a pre-stored and selectable voice alarm message.

Abstract: An apparatus for transmitting an RF signal in a mobile communication terminal and a method for controlling the same. The apparatus is insensitive to temperature variation simultaneously with satisfying a specification of a mobile communication system, and reduces noise simultaneously with preventing output power from bounding. The apparatus includes a step-up converter for converting a signal to be transmitted into a signal of a transmission band; a reverse variable attenuator for performing high attenuation or low attenuation about an output signal of the step-up converter according to an attenuation control value; a transmission power processor for raising power of an output signal of the reverse variable attenuator to transmission power; and a controller for generating the attenuation control value used for performing high attenuation if the signal to be transmitted requires a low output power level, whereas performing low attenuation if the signal to be transmitted requires a high output power level.

Abstract: A method for tuning quality factor (Q) in a high-Q, high-frequency filter is provided that includes filtering an input signal to generate a filtered signal. The input signal comprises a specified frequency. The filtered signal comprises an actual phase shift with respect to the input signal. The actual phase shift is compared to a desired phase shift for the filtered signal to determine a difference between the actual phase shift and the desired phase shift. The desired phase shift corresponds to the specified frequency. The filter is tuned based on the difference between the actual phase shift and the desired phase shift.

Abstract: An image-capturing apparatus is capable of capturing a three-dimensional image and a high quality panoramic image as the need arises, and is portable if it is used as a single lens camera that captures a normal two-dimensional image. A second image-capturing unit having an image-capturing optical system is detachably connected to a first image-capturing unit, which is capable of functioning as an image-capturing apparatus by itself, through joints and a connector. The second image-capturing unit can extensively connect to other units, which have the similar connecting structure. Information is transmitted between the units through a slot for an external storage device. The positions of images captured by the second and subsequent image-capturing units can be adjusted with respect to an image captured by the first image-capturing unit. In synchronism with release signals from the first image-capturing unit, the other units are driven to capture the images at the same time or continuously.

Abstract: In an interchangeable lens assembly video camera system including an interchangeable lens assembly and a camera, a filter of an AF signal processing circuit (113) of the camera extracts a focus evaluation value signal from an image sensing signal corresponding to one or a plurality of focus detection areas in an image sensing surface, and on the basis of the transmitted focus evaluation value signal from the camera and data stored in a ROM (120), the microcomputer (116) performs a zooming operation of a zoom lens (102) while maintaining an in-focus state of a focus lens (105).

Abstract: There is disclosed an optical printer for printing a grayscale image on a self-developing type photo film unit based on image data. A printing head of the optical printer is provided with a plurality of light emitting elements arranged in a line along a main scan direction whose lighting time lengths are controlled for each pixel in accordance with a tonal level of that pixel. The printing head is shifted relative to the photo film unit in a sub scan direction perpendicular to the main scan direction, to print the image line by line. During each printing cycle of one line, drive voltage applied to the respective light emitting elements are raised with time from an initial value according a predetermined characteristic curve, to increase luminance of the respective light emitting elements as the lighting time for each pixel elapses.