摘要:
A demodulating circuit is capable of controlling stereo separation as a function of an electric field strength. An intermediate frequency signal not limited obtained from an intermediate frequency circuit is utilized as a signal representative of the level associated with the electric field strength. Stereo separation is discontinuously controlled as a function of the signal representative of the electric field strength. The separation is maintained in the possible maximum value in the region exceeding a predetermined value of the electric field strength but is abruptly decreased to a given value between a stereo state and a monaural state from the above described maximum value (stereo state) when the electric field strength becomes smaller than the above described predetermined value and the separation is changed as a function of the electric field strength in the region smaller than the above described value of the electric field strength.
摘要:
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. Accordingly, a control voltage obtained from the phase locked loop on the occasion of a station selecting operation or a control voltage obtained from the automatic frequency control loop on the occasion of the reception of the electric wave by the tuner, is switchably selected and is applied to the voltage controlled oscillator.
摘要:
A cassette tape device includes a tape drive mechanism provided to move between a play position in which the tape is advanced and a release position in which the tape is stopped and released from any tension, a detector for detecting whether or not the tape is driven, a latch element provided for prohibiting the advance of the tape when the tape drive mechanism is in the release position and for allowing the tape to advance when the tape drive mechanism is in the play position, shifting mechanism for shifting the tape drive mechanism from the release position to play position when the detector detects that the tape is not advancing, and retaining member for retaining the tape drive mechanism in the play position.
摘要:
A tape transport is disclosed and claimed for moving recorded tape that contains both recorded sections and non-recorded sections between a loaded reel and a takeup reel. The transport is adapted for both the normal play, fast forward, and rewind modes and for an additional two modes, detecting fast forward and detecting rewind, in which the tape moves in fast forward or rewind through a recorded section until a non-recorded section is detected, at which point the transport automatically shifts to the play mode. A selector for choosing the desired mode can be operated by a single control lever. Or a first control for choice between play, fast forward, and detecting fast forward, and a second control for choice between play, rewind, and detecting rewind can be provided.
摘要:
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.According to the present invention, provision is made so that, if a condenser is clogged with dust or dirt, an indication is given of such clogging.
摘要:
A system and method for determining vendibility in an automatic vending machine, comprising: a coin sorter, coin detectors for sorted coins, coin reservoirs for sorted coins, empty switches provided to the respective coin reservoirs, said coins comprising three kinds of coins, 100 yen, 50 yen and 10 yen coins, a change pay off mechanism for paying off change using said reserved coins in said reservoirs, commodity price setting means, a counter for counting the number of received 50 yen coins, a counter for counting the number of received 10 yen coins, a signal generator for generating information of the total amount of received coins based on coin detecting signals, a signal generator for generating unit information associated with 10 yen, and a subtractor for sequentially subtracting said unit information from said total amount information, wherein availability of received coins as change is determined at each stage of said sequential subtraction, whereby vendibility for the respective amount at each stage of the sequential subtraction is determined.
摘要:
A radio-controlled vehicle having a steering motor, a drive motor, a drive mechanism, and a direction sensor for receiving an RF signal from a remote station to actuate the drive motor and to control the steering motor to direct the vehicle to the station. Also, an ultra-sonic anti-collision circuit for preventing the vehicle from colliding with any obstacle lying in the way of its travel. The direction sensor includes an integrating circuit to remove noise components from the direction control signal to thereby provide precise control to the drive mechanism. The ultra-sonic anti-collision circuit includes circuits for preventing malfunction of the anti-collision circuit due to mechanical shocks and/or vibrations of the vehicle.
摘要:
An improved D. C. power source whose output voltage is independent of changes in temperature is disclosed. Compensation for changes in temperature is established by three features. For a change of the voltage drop in the forward direction between the base and the emitter of a transistor, a plurality of diodes provided in a bias circuit in the transistor are utilizied; for a change of the current amplification factor .beta. of a transistor, an additional transistor is attached to the transistor, and; for a change of the value of an emitter resistor connected between the emitter of the transistor and the ground, an external stable resistor is utilized. The D. C. power source of the present invention is, in particular, useful for an integrated circuit.
摘要:
A two-beam semiconductor laser device 10 includes: a two-beam semiconductor element LDC having a first and a second semiconductor laser elements LD1 and LD2 that can be driven independently and that are formed integrally on a substrate; and a submount 63 having, mounted on a front part thereof, the two-beam semiconductor laser element LDC with the light-emitting face thereof directed forward and having a first and a second electrode pads 64 and 65 connected to electrodes 61 and 62 of the first and second semiconductor laser element LD1 and LD2 by being kept in contact therewith. The first and second electrode pads 64 and 65 are formed to extend farther behind the two-beam semiconductor laser element LDC, and wires 14 and 16 are wire-bonded behind the two-beam semiconductor laser element LDC.
摘要:
A hinge mechanism (20) of a foldable device (1) for foldably connecting one end parts of a pair of device cases to each other, comprises a first frame (21) having first and second arm pieces (22, 24), a second frame (41) having third and fourth arm pieces (42, 44), and a third frame (30) having first and second connection pieces (32, 33) with first to fourth joining parts (34) to (37). The first to fourth arm pieces are rotatably connected to the first to fourth joining parts to form first to fourth connection parts (101) to (104), and drive mechanisms (50) and link mechanisms are formed in the first to fourth connection parts. When the first frame is rotated in one direction relative to the third frame, the second frame is rotated by the same angle as the rotated angle of the first frame in the opposite direction of the third frame. Thus, the hinge mechanism of the foldable device can stably fold the device cases without producing a displacement between both housings thereof when the device cases are folded by providing different axes in the device cases. Furthermore, a foldable device having the hinge mechanism can be provided.