摘要:
A mode switching circuit has external terminals, a mode selection means for selecting a mode in accordance with the kind of a signal applied to the terminals, and a means for designating a mode selection state in the mode selection means by a mode selection signal. The external terminals are used commonly for a plural kinds of signals.
摘要:
In a tape recorder including a circuit for generating a pulse signal corresponding to an amount of tape travel, an electronic counter circuit is provided which includes a counter for counting pulses and a display section for displaying a count value. The electronic counter circuit further includes a memory for receiving voltage at all times from a power supply and storing a count value and a control section adapted to maintain the energization of the display section for a predetermined time period after the operation of the tape recorder is stopped and to stop the energization of the display section thereafter, while inhibiting the resetting of the counter.
摘要:
In a tape recorder including a circuit for generating pulses according to the running of a tape, an electronic counter circuit is provided which includes a counter for counting pulses and a display section for displaying its count value. The electronic counter circuit further includes a control circuit for disconnecting a display section from a power supply source a predetermined time period after the running of the tape is stopped and a memory for storing the count value at all times.
摘要:
In a tape recorder, which has a circuit for producing pulses according to the running of a tape, there is provided an electronic counter circuit having a counter for counting pulses produced from that circuit and a display section for displaying the count. The electronic counter circuit includes a missing-pulse detector for detecting the pulse interval of the output pulse signal of the pulse generating circuit and producing a detection signal when the detected pulse interval exceeds a predetermined interval, a circuit for producing an alarm for a predetermined period of time according to the output signal of the missing-pulse detector, and a circuit for supplying a rotation stop signal to a motor of the tape recorder according to the output signal of the missing-pulse detector.
摘要:
A tape recorder with electronic counter having a counter portion (14) furnished with power from a first battery (18) and serving to display the extent of tape drive, a tape recorder portion (20) furnished with power from a second battery (22) and switched from one operation mode over to another according to the count value in the counter portion (14) and a switch (17) for permitting the power supply to the counter portion (14) from the second battery (22) when the counter portion (14) becomes inoperative with the exhaustion of the first battery (18).
摘要:
An operation mode display apparatus comprises first and second display means (LED1 and LED2) capable of being operated independently of each other and a display state specifying means for specifying the display states of said first and second display means corresponding to an operation mode of a tape recorder. At least three operation modes of said tape recorder can be displayed by corresponding combinations of the display states of the first and second display means (LED1 and LED2).
摘要:
A tape cassette lid opening device for a magnetic recording tape driving apparatus provided with a tape cassette loading section for receiving a tape cassette and a capstan projecting from the bottom surface of said tape cassette loading section, comprises a tape cassette lid and a tape cassette lid opening mechanism. The tape cassette lid is pivotally mounted on the magnetic recording tape driving apparatus and is pivotable between a first position, in which the tape cassette lid covers the tape cassette loading section, and a second position, in which the tape cassette lid permits the loading of said tape cassette into the tape cassette loading section and unloading of the tape cassette from the tape cassette loading section. The tape cassette lid opening mechanism includes a motor which causes the pivotal motion of the tape cassette lid from said first position to said second position by means of the driving force of the motor.
摘要:
Disclosed is a foot switch apparatus which is connected to a tape recorder, the tape recorder having a mode control circuit which designates its operation mode. The foot switch has an automatic back spacing circuit coupled to the mode control circuit. When the foot switch operates, a recording tape on the tape recorder is rewound by a predetermined length in response to an operation of the automatic back spacing circuit.
摘要:
In the disclosed system, a large scale integrated circuit receives operating signals from record, play, stop, fast-forward, and rewind actuating switches at corresponding input terminals and produce motor forward and reverse signals for controlling switches that operate a motor, fast-forward signals, and amplifier control signals at corresponding output terminals. Outside the LSI, a feedback arrangement responds to a tape-stop signal indicating that the tape has stopped advancing, and the motor forward signal produced by the large scale integrated circuit to apply play and rewind signals to the input terminals of the circuit whether or not the rewind or play switches have been operated.
摘要:
A tape recorder comprises a control motor disposed separately of a tape driving motor and controlled by a control switch; a cam shaft to which the driving force of the control motor is transmitted; a head support plate for supporting a magnetic head, and a pinch roller or the like and which is movable between a first position in which the magnetic head is in contact with the magnetic tape and the tape is clamped between the pinch roller and the capstan shaft and a second position in which the magnetic head is not in contact with the tape and the tape is not clamped between the pinch roller and the capstan shaft; a biasing member for biasing the head support plate toward the first position; and a press cam secured to the cam shaft and to which a support plate is biased by the biasing force of the biasing member. The press cam, by its unitary rotation with the cam shaft, controls the position of the head support plate against the biasing force of the biasing member. The tape recorder further comprises a control cam secured to the cam shaft and coupled to the control switch to change over the control switch by unitary rotary rotation with the cam shaft and the press cam.