Abstract: The output of a voltage controlled oscillator serving as a local oscillator is frequency divided by a prescaler and a programmable frequency divider, and the frequency divided output is applied to a phase locked loop including a phase comparator and a charge pump. An S curve signal obtained from a frequency discriminator is applied to an automatic frequency control loop including a window comparator and a charge pump. The outputs of these two charge pumps are applied through an analog switch to a common low-pass filter and the output of the low-pass filter is applied to the voltage controlled oscillator as a control voltage. A state of reception by the tuner is detected based on the output of an intermediate frequency amplifier and the analog switch is responsive to the detected output and a lock detected output of the phase locked loop.

Abstract: An FM signal is applied to an input of a differential amplifier including a pair of transistors having symmetrical characteristics. A 180.degree. phase shifting circuit is connected between two inputs of the differential amplifier. Accordingly, the inputs of the pair of transistors of the differential amplifier receive the FM signal, as converted into an AM signal. The respective base-emitter rectifying junctions of the pair of transistors each rectify the AM signals, as received. The emitter electrodes of the pair of transistors are commonly connected through a predetermined resistor, with the common connection point being connected to the ground through a capacitor. Accordingly, a smoothing circuit is implemented by the emitter resistor and the capacitor. A load resistor is connected to the collector electrode of one of the pair of transistors, so that a detected output is withdrawn therefrom.

Abstract: A noise removing apparatus is interposed between an FM detecting circuit and a stereo demodulating circuit. The noise removing apparatus is responsive to a pulsive noise included in the output from the detecting circuit to enable a first gate to interrupt transmission of the output. Although the stereo pilot signal is disturbed during the interruption period, the disturbed stereo pilot signal is canceled by a pseudo-stereo pilot signal (a signal similar to the pilot signal) separately generated, whereby the disturbed stereo pilot signal is prevented from being applied to the stereo demodulating circuit.

Abstract: A hybrid integrated circuit unit comprising an integrated circuit assembly having at least one semiconductor device and a plurality of conductors extending to the first connecting terminals, a printed circuit board having at least one discrete element and a plurality of conductors beginning from the second connecting terminals and connecting means for connecting the first and the second connecting terminals, the integrated circuit assembly and the printed circuit board are unified by said connecting means.

Abstract: The present application discloses a control device for an ice making machine to make ice by circulating ice-making water to an ice making member having a refrigerating system, said control device comprising a timer circuit to be operated simultaneously with or with a delay after the start of an ice making operation and adapted to control a period of time during which an ice making operation is performed, a temperature sensing element whose impedance varies with the variations of the ambient temperature around the refrigerating system, so that an input voltage applied to the timer circuit may vary with the variations of an impedance of the temperature sensing element, thereby to automatically control the period of time during which an ice making operation is performed, whereby the thickness of ice made when one cycle of an ice making operation is completed, may be maintained constant at all times.

Abstract: An input signal including a pulsive noise such as an ignition noise in superposition on a continuous noise such as a white noise is applied commonly to the base electrodes of a pair of transistors of the same conductivity type implementing a differential amplifier. The amplified signal is applied to first and second rectifying circuits for full-wave rectification. The output of the first rectifying circuit is detected by a detecting circuit. The output of the second rectifying circuit is applied to a pulsive noise detecting circuit for detection of a pulsive component. The ratio of the detecting level of the detecting circuit to the detecting level of the pulsive noise detecting circuit is determined for avoiding malfunction of the pulsive component detecting circuit by virtue of the continuous noise.

Abstract: This application discloses a single effect and double effect absorption refrigerating system, in which water is used as a refrigerant and LiBr as an absorbent, for example. A refrigerating cycle is formed by connecting in an air-tight manner a high temperature generator to be heated by a high temperature heat source, a first low temperature generator to be heated by refrigerant vapor separated from a dilute solution in said high temperature generator, a condenser, an evaporator, an absorber, a first heat exchanger and a second heat exchanger by means of refrigerant lines, dilute solution lines and dense solution lines. A second low temperature generator to be heated by a low temperature heat source is disposed between one of the dilute solution lines and one of the dense solution lines so as to communicate with said condenser, whereby the supply of a solution and a fuel to said high temperature generator may be controlled dependent on the heating capacity of said second low temperature generator.

Abstract: A digital phase comparator, to be used in a phase locked loop, for example, comprises a first and second input signal terminals receiving a first and second input signals, respectively, the phases of which are to be compared, and a pair of first and second delay flip-flops. The first input signal terminal is connected to a clock terminal of the first delay flip-flop and a reset or set terminal of the second delay flip-flop. The second input terminal is connected to a set or reset terminal of the first delay flip-flop and a clock terminal of the second delay flip-flop. An inverted or non-inverted output terminal of the first delay flip-flop is connected to a data terminal of the second delay flip-flop. An inverted or non-inverted output terminal of the second delay flip-flop is connected to a data terminal of the first delay flip-flop. An output signal associated with the phase difference between the first and second input signals is obtained from the output terminals of the first and second delay flip-flops.

Abstract: An input signal could include a pulsive noise such as an ignition noise in superposition on a continuous noise such as a white noise. Such input signal is commonly applied to the respective base electrodes of paired transistors of the same conductivity type connected in a differential amplifier fashion. The amplified signal is then applied to a rectifying circuit, where the signal is full-wave rectified, and the output of the rectifying circuit is detected by a detector. The detected output is then applied to the base electrode of a first transistor. A second transistor is provided such that a current mirror circuit is formed between the collector electrode of the second transistor and the collector electrode of the first transistor. A diode circuit is connected between the current mirror circuit and the collector electrode of the second transistor in the forward direction.

Abstract: A tuning control apparatus for a digital automatic scanning tuner or a digital preset tuner employing a voltage controlled variable capacitance diode as a tuning element, wherein a tuning state detecting circuit is provided for detecting a tuning state responsive to a first signal which assumes the high level when the actual tuning frequency of the tuner falls in a predetermined frequency range which is higher than the correct tuning frequency being received and a second signal which assumes the high level when the actual tuning frequency of the tuner falls in a predetermined frequency range which is lower than the correct tuning frequency being received, and when the tuner is to be tuned to the frequency of a given broadcasting signal a tuning voltage being applied to the voltage controlled variable capacitance diode is varied in the upward or the downward direction, whereby the lower end of the second signal or the upper end of the first signal is detected, whereupon the lower end of the first signal or the

Abstract: A display in a superheterodyne receiver having a local oscillator, adapted for displaying in a digital manner the frequency of a signal being received by the receiver by counting the local oscillation frequency by means of a preset counter wherein the data for the prescribed intermediate frequency or the complement thereof is preset. A reference voltage is generated by means of a variable resistor for correcting the difference between the preset value for the prescribed intermediate frequency and the actual intermediate frequency of the intermediate frequency stage of a receiver as actually manufactured, and a comparison voltage is obtained by digital/analog converting the output of a multiple-bit counter which is stepped responsive to clock pulses.

Abstract: A preset tuner adapted for selecting a desired one out of a plurality of preset channels, comprising: a memory for storing digital data concerning a plurality of channels to be preset, push-buttons for addressing the memory for reading the digital data of a desired channel, a digital/analog converter for converting the read digital data into an analog signal, a manually operable variable voltage generator, a write-in/channel select mode selector, a switch circuit responsive to the mode selector switchable between the digital/analog converter and the variable voltage generator, a voltage controlled oscillator responsive to the output of the switch circuit, a tuner employing the voltage controlled oscillator as a local oscillator, a comparator for comparing the outputs of the digital/analog converter and the variable voltage generator, a counter to be reset responsive to the push-button and to be enabled responsive to the write-in mode output of the mode selector to make a counting operation as a function of th

Abstract: An ornamental molded article composed of a nonwoven fabric with a multicolored pattern and two synthetic resinous layers, between of which said nonwoven fabric is intervening, and the method and dies employed in its manufacture.

Abstract: A semiconductor substrate of an N type is formed partially of a well region of a P type by means of a first ion implantation process, then subjected to selective diffusion to form source and drain regions of a P type on the surface of the original substrate, whereby a first insulated gate field effect transistor is formed, and further subjected to selective diffusion to form source and drain region of an N type in the well, whereby a second insulated gate field effect transistor is formed.

Abstract: A superheterodyne receiver comprising a high frequency amplifier, a local oscillator implemented by a frequency synthesizer including a phase locked loop, a mixer, an intermediate frequency amplifier, an up down counter for providing data concerning frequency division rate of a programmable counter in the phase locked loop, characterized in that the up down counter is structured such that the counter is responsive to a command signal from an upward scanning switch to make an upward counting operation and is responsive to a command signal from a downward scanning switch to make a downward counting operation and is further responsive to command signals simultaneously obtained from these two upward and downward scanning switches to make a consecutive upward or downward counting operation, whereby a receiving channel is consecutively selected in the upward or downward direction in a fast scanning manner.

Abstract: A transformer coupled switching regulator power supply having current-limiting circuits and under-voltage detecting circuits on the primary side of the power transformer. The under-voltage detection circuit acts to substantially terminate the flow of current through the switching circuits in the case of a short circuit in the load.

Abstract: A frequency synthesizer for use in a transmitter/receiver, comprising a voltage controlled oscillator, a programmable frequency divider for dividing the frequency of the output from the voltage controlled oscillator, a reference oscillator, a reference counter for dividing the frequency of the output from the reference oscillator, a phase detector for phase detecting the frequencies of the reference counter and the frequency divider for providing a control voltage to said voltage controlled oscillator, a transmitting/receiving mode selection circuit for selectively controlling the programmable frequency divider such that the frequency division rate thereof is different in the transmitting and receiving modes, a channel designating circuit, a first output terminal for withdrawing an output by mixing the output from the voltage controlled oscillator with the output from the reference oscillator, and a second output terminal for directly withdrawing the output from the voltage controlled oscillator, said transmi

Abstract: A frequency synthesizer for use in a transmitter/receiver, comprising a voltage controlled oscillator, a programmable frequency divider for dividing the frequency of the output from the voltage controlled oscillator, a reference oscillator, a reference counter for dividing the frequency of the output from the reference oscillator, a phase detector for phase detecting the frequencies of the reference counter and the frequency divider for providing a control voltage to said voltage controlled oscillator, a transmitting/receiving mode selection circuit for selectively controlling the programmable frequency divider such that the frequency division rate thereof is different in the transmitting and receiving modes, a channel designating circuit, a first output terminal for withdrawing an output by mixing the output from the voltage controlled oscillator with the output from the reference oscillator, and a second output terminal for directly withdrawing the output from the voltage controlled oscillator, said transmi

Abstract: A diaphragm for a dynamic cone speaker which is composed of a porous metal produced from a metal such as nickel, wherein a layer, such as of aluminum foil, is disposed on a surface of the porous metal to eliminate the gas permeability of the porous metal.

Abstract: An apparatus for removing a pulsive noise in an FM stereo signal including a stereo information signal and a stereo pilot signal, said composite signal further including a pulsive noise, said apparatus comprising an FM detector for providing said composite signal, a noise detector for detecting said pulsive noise for providing a control signal of a predetermined pulse width upon occurrence of said noise, a gate circuit to be normally closed for passing therethrough said composite signal and to be opened by the output from the noise detector, an amplifier for amplifying the output from the gate, a frequency band cut off filter coupled to said amplifier to form a negative feedback circuit, said filter being set to the pilot signal frequency and/or the subcarrier signal frequency, an attenuator coupled to the output of said amplifier, and a capacitor coupled to the output of said gate circuit and cooperative with said attenuator for holding, when the gate is opened, the signal level at the output of the gate to