Abstract: A current controller includes a pulse width modulation signal outputting circuit, a saw-tooth-wave signal generating circuit, a command value smoothing circuit, a detection value amplifying circuit, a deviation integrating circuit, and a current controlling circuit. The current controlling circuit controls a current caused to flow through a solenoid on the basis of a saw-tooth-wave signal having the same period as that of a pulse width modulation signal, and a detection signal generated by the deviation integrating circuit.

Abstract: A current controller includes a pulse width modulation signal outputting circuit, a saw-tooth-wave signal generating circuit, a command value smoothing circuit, a detection value amplifying circuit, a deviation integrating circuit, and a current controlling circuit. The current controlling circuit controls a current caused to flow through a solenoid on the basis of a saw-tooth-wave signal having the same period as that of a pulse width modulation signal, and a detection signal generated by the deviation integrating circuit.

Abstract: A character input method enables mistake of character input to be diminished, and it is unnecessary to use a rotary type switch in the character input method, therefore it is economical. In a frequency scanning type receiver, when it causes character input to be performed according to a key board section, respective numeric-keys 1 to 0 of 10-key correspond to a plurality of character groups consisting of capital letter, small letter of an alphabet, and numerals arranged in accordance with prescribed order to be determined. CPU/memory section selects the corresponding character group according to a numeric-key which is pressed firstly, next, the CPU/memory section selects corresponding alphabet character, numeral from among character group according to numeric-key which is pressed secondly.

Abstract: A throttle control apparatus for an internal combustion engine capable of controlling an opening degree of an electronic control type throttle with high accuracy by employing an inexpensive A/D converter. The apparatus includes a throttle opening degree detector, and a controller for controlling the opening degree to a target value in dependence on operation state of the engine. The throttle opening degree detector includes a throttle opening degree sensor, an offset unit for transforming the sensor voltage into a plurality of offset-weighted voltages (V1, . . . , V4), an A/D converter and an adder for adding the converted offset-weighted voltages (V1 to V4) wherein a sum value resulting from addition of the offset-weighted voltages (V1, . . . , V4) is detected as the opening degree of the throttle to be controlled.

Abstract: An each area automatic selection receiver of an emergency radio signal is an emergency broadcast receiver which enables current area code CAC to be updated automatically. This receiver is constituted in such a way that a GPS receiver obtains current position information by use of the satellite positioning system, then, a converter converts the current position information into an area code by use of a conversion table to write the area code into a code memory. For that reason, even though the receiver moves anywhere, contents of the code memory are always updated to an area code of an area of the movement destination automatically. Therefore, emergency broadcast of the area is always capable of being received correctly.

Abstract: A throttle control apparatus for an internal combustion engine capable of controlling an opening degree of an electronic control type throttle with high accuracy by employing an inexpensive A/D converter. The apparatus includes a throttle opening degree detecting means for detecting opening degree of the electronic control type throttle (1, 2) for controlling operation of the engine, and a means (11) for controlling the opening degree to a target value in dependence on operation state of the engine. The throttle opening degree detecting means includes a throttle opening degree sensor (3) for generating a sensor voltage corresponding to the opening degree of the electronic control type throttle, an offset means (101, . . . , 104) for transforming the sensor voltage into a plurality of offset-weighted voltages (V1, . . . , V4), an A/D converter (12) for performing A/D conversion of the plurality of offset-weighted voltages (V1, . . .

Abstract: A frequency scanning receiver comprises a first local oscillator, a second local oscillator, a Nth local oscillator, a memory, a control circuit and etc.

Abstract: A frequency scanning receiver not requiring the time for setting the frequency of the PLL of the first local oscillator and using a method capable of setting the receiving frequency in a simple circuit configuration, wherein the frequency scanning receiver is configured so that in the case where the reference frequency of the PLL of the first local oscillator has been set at a high frequency, when the frequency error is less than the second IF, it is configured so that the frequency error is controlled to be zero by the control circuit switching the frequency of the second local oscillator or the third local oscillator to an appropriate frequency using an output of the frequency discriminator.

Abstract: An each area automatic selection receiver of an emergency radio signal is an emergency broadcast receiver which enables current area code CAC to be updated automatically. This receiver is constituted in such a way that a GPS receiver obtains current position information by use of the satellite positioning system, then, a converter converts the current position information into an area code by use of a conversion table to write the area code into a code memory. For that reason, even though the receiver moves anywhere, contents of the code memory are always updated to an area code of an area of the movement destination automatically. Therefore, emergency broadcast of the area is always capable of being received correctly.

Abstract: A power supply unit which has charging function enables error charging of a non-charged-type battery to be prevented, which battery is used as a power supply of an electric circuit device. Such the power supply unit is materialized with simple constitution and a low price. The power supply unit in the electric circuit device includes an external power supply connecting power supply jack, a protection circuit, and so forth. A charged-type battery case is provided with a positive electrode terminal of the power supply unit, a positive terminal corresponding to a first and a second negative electrode terminals, and a first and a second negative terminals. While a non-charged-type battery case is only provided with a positive terminal and a first negative terminal. A terminal corresponding to the second terminal is not provided for the non-charged-type battery case.

Abstract: An SSB radio receiver having an inexpensive wide-band IF filter which passes through not only a reception objective SSB station IF signal but also an interference SSB station IF signal simultaneously. These signals are SSB-detected to reproduce the original modulating audio signals with a BFO frequency, the BFO frequency itself located out of the pass-band of the wide-band IF filter. The frequency of the reception objective SSB station IF signal is selected to be nearest to the BFO frequency, preferably at an end of the pass-band width of the IF filter. Frequency spectrums of the SSB-detected audio signals are separated by a frequency difference comprising the difference between the BFO signal and the IF signals. The SSB-detected audio signals are applied to a selected low-pass filter, such as an inexpensive active filter, having a pass-band which covers or passes only the SSB-detected audio signal of the reception objective SSB station IF signal.

Abstract: A telephone-line dedicating apparatus which is connected between an external telephone-line and a specified telephone-line utilization apparatus such as a telephone-set, facsimile machine or the like and which upon energization causes one or more other telephone-line utilization apparatus to be unable to function connected to said external telephone-line is disclosed. Specially, when said specified telephone-line utilization apparatus is a facsimile machine, any influence on said facsimile machine which is in use, due to noises from the other equipments connected to the same external telephone-line can be prevented.

Abstract: A telephone answering apparatus permits a called party to select between an automatic mode wherein a message is automatically played back to a caller without any action of the called party and a prenouncer mode wherein a message is played back to the caller when activated by the called party. The telephone answering apparatus includes a ring detector circuit connectable to an outside line and responsive to an incoming call on the outside line for producing a ring detected signal, a timer and driver circuit responsive to the ring detected signal for producing a playback signal and a manually actuatable answer switch. A mode switch capable of selecting one of the prenouncer mode and the automatic mode is connected to the timer and driver circuit, to the ring detector circuit and to the answer switch.

Abstract: A radio receiver includes a noise blanking system comprising a switching circuit in the signal path which is responsive to a blanking signal for preventing passage of signals. A blanking signal producing circuit is in the signal path ahead of the switching circuit and is responsive to predetermined noise signals received by the radio receiver for producing the blanking signal. The receiver also includes an AGC circuit for producing a gain control signal and a signal strength meter coupled for response to the gain control signal. A linearity control system comprises a current controlling circuit responsive to a meter control signal for controlling the current flow through the meter so as to increase the range of linear response of the meter. A signalling circuit is coupled with the AGC circuit and with the current controlling circuit and is responsive to the gain control signal for producing the meter control signal.

Abstract: A linearity control system comprises a current controlling circuit responsive to a meter control signal for controlling the current flow through the meter so as to increase the range of linear response of the meter.

Abstract: A slide switch comprises a plurality of sets of aligned terminals, each set comprising at least a center terminal and two end terminals, one to either side of the center terminal and aligned along a common axis therewith, and a plurality of elongate slides respectively associated with the sets of terminals. The slides are of sufficient length to engage the center terminal and only one of the associated end terminals. An actuator mounts the slides for movement between a first position wherein the slides electrically couple each of the center terminals with one of its associated end terminals and a second position wherein the slides electrically couple each of the center terminals with the other of its associated end terminals. A light emitting element has a pair of electrodes and is responsive to a given voltage across the electrodes for emitting light.

Abstract: A power-saving relay circuit for reducing power consumption from a power supply comprises a relay including a selectively energizable relay coil, a plurality of movable contactors, and a plurality of fixed contacts including first and second fixed contacts associated with each of the movable contactors. Each of the movable contactors is normally in electrical contact with the first fixed contact and responsive to energization of the relay coil for breaking the electrical contact with the first fixed contact and for making electrical contact with the second fixed contact. A current limiting circuit is coupled in electrical series circuit intermediate a selected one of the second fixed contacts and the relay coil. The movable contactor associated with the selected one of the second fixed contacts is capable of being coupled in circuit with the power supply for completing an electrical circuit through the current limiting circuit for energizing the relay coil.

Abstract: An antenna defines a coaxial connector receptacle when the antenna is in a fully retracted position.

Abstract: An antenna comprises an antenna body telescopically movable between a fully retracted position and a fully extended position and having a free end. A BNC-type coaxial receptacle is mounted to the free end of the antenna body. A mounting base receives the BNC-type coaxial receptacle when the antenna is in the fully retracted and completes an electrical ground circuit to the BNC-type receptacle.

Abstract: A hand-operated knitting machine of the type having a single, flat needle bed includes an improved carriage mounted on the bed for bi-directional movement. The carriage performs the needle selection, loop transfer, and knitting functions through a cam arrangement symmetrically located relative to the transverse center line of the carriage. The cam arrangement includes the plurality of fixed and movable cams that define front and rear loop transfer butt-paths that operatively engage the transferring and the receiving needles of a given set of paired needles to cause them to cooperate with a loop transfer device to effect loop transfer from one to the other of the needles to knit a lace-form fabric.