Abstract: A gas turbine includes a compressor, a combustor, an air lead-out member, an outer peripheral cover portion, and an auxiliary device member. The outer peripheral cover portion includes outer peripheral concave portions and outer peripheral convex portions, and is formed in a manner so that the outer peripheral concave portions recessed radially inward of the combustor so as to enter between mutually-adjacent combustion cylinders among the plurality of combustion cylinders and the outer peripheral convex portions protruding radially outward of the combustor so as to extend along outer peripheral surfaces of the plurality of combustion cylinders are alternately and continuously arranged in a circumferential direction of the combustor. The auxiliary device member is attached to one of the outer peripheral concave portions.

Abstract: A shield structure of a tuner apparatus includes: a circuit board on which a tuner circuit is provided; a shield case of sheet metal which accommodates and holds the circuit board; and a RF connector which is fixed to one side plate of the shield case so as to protrude outward and is electrically connected to the tuner circuit, wherein a box-shaped outer case is formed by connecting a case member of sheet metal which covers the shield case with the exception of the bottom surface portion thereof and the one side plate and a plate member of sheet metal which has a through hole, through which the RF connector passes, and covers the one side plate of the shield case, and wherein the outer case is unitized with the shield case.

Abstract: A television signal transmitter has an up-converter provided with a pre-amplifier and an impedance matching circuit subsequent to the pre-amplifier. The self-resonance frequency of an inductor included in the impedance matching circuit, which is connected in series to a signal line, is set to a parasitic oscillation frequency (5 GHz) of the pre-amplifier. The self-resonance frequency of an inductor of a filter provided prior to the pre-amplifier, which is connected in series to the signal line, is set to the parasitic oscillation frequency (5 GHz) of the pre-amplifier.

Abstract: A television signal transmitter includes a first frequency converting circuit that converts a television channel signal lower than a television broadcasting band into a first intermediate frequency signal higher than the television broadcasting band, and a second frequency converting circuit that converts the first intermediate frequency signal into the television broadcasting band and outputs it. An input amplifying circuit for amplifying the input television channel signal is provided at a previous stage of the first frequency converting circuit, and a band-pass filter is provided between the first frequency converting circuit and the second frequency converting circuit. The band of the input amplifying circuit and the band of the band-pass filter are a transmission band of a plurality of successive channels.

Abstract: A television signal transmitter is arranged by a first frequency converter for up-converting an input signal into an intermediate frequency signal, and a second frequency converter for down-converting the intermediate frequency signal into a television signal of any of channels within a predetermined output frequency band. In this television transmitter, a picture intermediate frequency of the intermediate frequency signal is set to be higher than a maximum frequency of the output frequency band, and is set to be lower than a doubled picture frequency of any one of the channels within the output frequency band by 1.25 MHz.

Abstract: A signal transmitter prevented from outputting an unwanted signal to the outside, which is generated at the time of changing any of various setting parameters such as a channel through which a signal is to be transmitted and the degree of modulation of an intermediate frequency signal to be supplied without deteriorating impedance matching between circuits. This signal transmitter has a local oscillator for outputting a local oscillation signal; a mixer for mixing a supplied television intermediate frequency signal with the local oscillation signal and frequency-converting the resultant signal to a television signal of a specific channel through which the signal is to be transmitted among television channels; and a variable band-pass filter connected at a post stage of the mixer and tuned to the frequency of the specific channel. The tuning frequency of the variable band-pass filter can be shifted out of the frequency band of the specific channel.

Abstract: A modulation factor is kept immune from the influence of temperature variation. A modulator is provided with an operational amplifier to one of whose input ends are inputted video signals and to the other is applied a reference voltage and a video mixer into which are entered carrier wave signals and video signals amplified by the operational amplifier, wherein the reference voltage is raised or lowered as the gain of the video mixer increases or decreases, respectively, with a variation in temperature.

Abstract: A television signal transmitter containing: a first frequency conversion unit for up-converting a first intermediate frequency signal modulated by an image signal and a voice signal into a second intermediate frequency signal and a second frequency conversion unit for down-converting the second intermediate frequency signal into a television channel signal. The first frequency conversion unit is provided with a first local oscillating circuit and a first PLL circuit for controlling an oscillating frequency of the first local oscillating circuit. The second frequency conversion unit is provided with a second local oscillating circuit and a second PLL circuit for controlling an oscillating frequency of the second local oscillating circuit. The first PLL circuit and the second PLL circuit are constituted by fractional PLL circuits, respectively.

Abstract: A television signal transmitter is arranged by a first frequency converter for up-converting an input signal into an intermediate frequency signal, and a second frequency converter for down-converting the intermediate frequency signal into a television signal of any of channels within a predetermined output frequency band. In this television transmitter, a picture intermediate frequency of the intermediate frequency signal is set to be higher than a maximum frequency of the output frequency band, and is set to be lower than a doubled picture frequency of any one of the channels within the output frequency band by 1.25 MHz.

Abstract: A modulation factor is kept immune from the influence of temperature variations. A modulator is provided with an operational amplifier to one of whose input ends are inputted video signals and to the other is applied a reference voltage and a video mixer into which are entered carrier wave signals and video signals amplified by the operational amplifier, wherein the reference voltage is raised or lowered as the gain of the video mixer increases or decreases, respectively, with a variation in temperature.

Abstract: A demodulator is able to demodulate a television signal and an FM broadcast signal by a common demodulator. Also, a receiver is able to output television video signal and audio signal and an audio signal of the FM broadcast signal by the common demodulator without using a second mixer for frequency-converting the FM broadcast signal to provide an audio intermediate frequency signal of 10.7 MHz when the FM broadcast signal is received. A demodulator includes a first input terminal, a second input terminal, a third input terminal and a change-over switch and wherein the change-over switch connects the first input terminal, a video detector and a video carrier generator to receive the television signal and the change-over switch connects the third input terminal, the video detector and the video carrier generator to receive the FM broadcast signal.

Abstract: A reference frequency signal switching circuit of the invention comprises: a internal oscillator for generating an internal reference frequency signal; an external reference frequency signal input terminal to which an external reference frequency signal is supplied; and a signal switching circuit for selectively outputting the internal reference frequency signal and the external reference frequency signal. Since an output level adjusting circuit for setting the external reference frequency signal outputted to a reference frequency signal output terminal so as to be at a predetermined level is provided, the output level can be made constant.

Abstract: A signal transmitter prevented from outputting an unwanted signal to the outside, which is generated at the time of changing any of various setting parameters such as a channel through which a signal is to be transmitted and the degree of modulation of an intermediate frequency signal to be supplied without deteriorating impedance matching between circuits. This signal transmitter has a local oscillator for outputting a local oscillation signal; a mixer for mixing a supplied television intermediate frequency signal with the local oscillation signal and frequency-converting the resultant signal to a television signal of a specific channel through which the signal is to be transmitted among television channels; and a variable band-pass filter connected at a post stage of the mixer and tuned to the frequency of the specific channel. The tuning frequency of the variable band-pass filter can be shifted out of the frequency band of the specific channel.

Abstract: The invention provides a frequency converter for a cable television transmitter, which executes frequency conversion with one frequency mixer to simplify the total configuration, to prevent deterioration of the carrier vs. noise ratio, and to effectively remove spurious frequency components. The frequency converter of the invention includes a frequency conversion unit that executes frequency mixing of an intermediate frequency signal and a local oscillator signal to convert the intermediate frequency signal into a high frequency signal corresponding to a transmission channel, and plural stage variable tuning filters connected in cascade to the output of the frequency conversion unit, which are each individually tuned to the high frequency signal corresponding to the transmission channel.

Abstract: Band characteristics between reception bands or reception channels are uniformed. There is provided a television tuner comprising a first tuning circuit which can be tuned to a television channel frequency in a first frequency band, a first amplification circuit for amplifying an output signal from the first tuning circuit, a second tuning circuit which can be tuned to a television channel frequency in a second frequency band, and a second amplification circuit for amplifying an output signal from the second tuning circuit, wherein, to at least one of the first and second tuning circuits, a damper resistor for decreasing Q of the tuning circuit when the tuning circuit is tuned to a frequency in a low-frequency band including each lowest channel in the first or second frequency band is connected.

Abstract: An apparatus for synchronously controlling the actual operation of a machine using one or more motors, such as servo motors, by simulating in program form a combination of selectable machine mechanisms, including drivers, connecting shafts, clutches, gears and cams. Each such machine mechanism is represented by a virtual mechanism, preferably as a software module that contains information uniquely identifying the module, operation information that defines the generation of position information and connection information that defines other modules to which connection is made. The software modules comprise drive modules for generating position information, transmission modules for simulating the transmission mechanisms and output modules for outputting motor commands.

Abstract: The double tuning circuit of a TV tuner provided by the present invention comprises a primary tuning circuit and a secondary tuning circuit coupled with each other wherein at least one of the primary and secondary tuning circuits comprises two series circuits connected to each other in parallel with each of the two series circuits including damping resistors and/or resonance capacitors in addition to switching diodes which are each selectively turned on and off by using a predetermined switching voltage corresponding to signal reception states so that the frequency response of an intermediate-frequency signal obtained on the output side of the double tuning circuit is fixed independently of a channel receiving the incoming signal and the intensity of the electric field of the incoming signal.

Abstract: An apparatus for synchronously controlling the actual operation of a machine using one or more motors, such as servo motors, by simulating in program form a combination of selectable machine mechanisms, including drivers, connecting shafts, clutches, gears and cams. Each such machine mechanism is represented by a virtual mechanism, preferably as a software module that contains information uniquely identifying the module, operation information that defines the generation of position information and connection information that defines other modules to which connection is made. The software modules comprise drive modules for generating position information, transmission modules for simulating the transmission mechanisms and output modules for outputting motor commands.

Abstract: An apparatus for synchronously controlling the actual operation of a machine using one or more motors, such as servo motors, by simulating in program form a combination of selectable machine mechanisms, including drivers, connecting shafts, clutches, gears and cams. Each such machine mechanism is represented by a virtual mechanism, preferably as a software module that contains information uniquely identifying the module, operation information that defines the generation of position information and connection information that defines other modules to which connection is made. The software modules comprise drive modules for generating position information, transmission modules for simulating the transmission mechanisms and output modules for outputting motor commands.

Abstract: A positioning apparatus and method for synchronously controlling a plurality of motors, such as servo motors, and exercises synchronous control by means of only motors without using any mechanisms, such as coupling shafts, clutches, gears and cams. A controller has a virtual drive capability which provides a virtual cam and virtual clutch capability on the basis of stored values, permitting continuous and repeated operation of a single cycle of positioning with respect to changes in input axis position address data without recalculation of command addresses in real time.