Abstract: 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.

Abstract: A display apparatus for tape running positions is provided with a first pulse generator (36) for generating m first pulses for each revolution of a supply reel (12) in a tape transport, a second pulse generator (38) for generating n second pulses for each revolution of a take-up reel (14), and a counter (44 to 48) for counting the number of the first pulses during one period of the second pulse. The ratio of count value change in the counter for a time period from the start to the end of the tape running is expanded to the square of the change ratio of rotational speed of the reel from the beginning to the end of the tape winding. A counting range of the counter at this time is proportional to m/n.

Abstract: In a cue signal generating system applied to a tape recorder which detects a cue signal by a reel drive of the tape, there is produced at least two different cue signals having the following relationf1/f2>d1/d2where d1 is the maximum wound tape diameter of the drive reel for the tape used, d2 is the minimum wound tape diameter of the drive reel, f1 is first frequency information contained in a first cue signal of a plurality of different cue signals and f2 is second frequency information of a second cue signal which is lower in frequency than said first frequency information f1.

Abstract: 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.

Abstract: 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.

Abstract: A tape end detection apparatus for a tape deck comprise a tape transport detection means which generates a first pulse in accordance with the transport of a tape. This apparatus further comprises a timer circuit means which does not operate to detect a terminal end of the tape during a period beginning from the start of a tape transport to the lapse of a first specified period of time, and which operates to detect, after the passage of the first specified period of time, the terminal end of the tape in accordance with the existence of the first pulse.

Abstract: 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.

Abstract: 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).

Abstract: There is provided a recorded-signal position detecting circuit which records a detection signal, whose frequency is much lower than that of an aural signal, in a tape during the recording mode in a manner to mix it upon the aural signal and reproduces the detection signal via a filter permitting the passage therethrough of this signal only, thereby to detect the position of the recorded detection signal. In this circuit, when the speed of the tape during the recording mode varies, the frequency of the detection signal varies with a change in such tape speed.

Abstract: 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).

Abstract: A back spacing apparatus includes a first means for providing speed information (E3, E4) corresponding to the speed of a tape, a drive source for rewinding the tape toward a supply reel (24) for back spacing, and a second means for providing an amount of electrical energy corresponding to the speed information (26) to the drive source (26) so that a length of the tape over which it is rewound toward the supply reel for back spacing is changed according to the transporting speed of the tape. The magnitude of the electrical energy is changed according to the speed information of the tape so that an amount of memory contents on that portion of a recorded tape rewound toward the supply reel for back spacing is made substantially independent of the transporting speed of the tape.

Abstract: A back spacing apparatus for a transcribing machine comprises a first means for providing a first signal (a) corresponding to the period of rotation of a supply reel or a take-up reel, a drive source for rewinding a tape toward the supply reel and a second means for providing electric energy (Tm.times.V) corresponding to the period (Tm) of the first signal (a) to the drive source for rewinding to vary the r.p.m. of the supply reel at the time of rewinding the tape toward the supply reel or the period of the rewinding operation according to the first signal (a). The magnitude (Tm.times.V) of the electric energy is varied in accordance with the period (Tm) of the first signal (a) for making the length of the tape rewound toward the supply reel substantially constant irrespective of the diameter of the tape rolled on the supply reel.

Abstract: An early tape end alarm for a multispeed tape recorder has a hub around which a tape is wound and which revolves at the speed corresponding to an amount of tape wound therearound, a first pulse generating means for generating a first pulse (P1) with a period changing in accordance with the rotary speed of the hub, and an alarm means which compares a value (CD) corresponding to the period of the first pulse (P1) with a given value (PD) thereby to give an alarm to notify that a traveling tape will reach its tape end in a short-time on the basis of the result of the comparison. The early tape end alarm is characterized by a means for changing a condition to provide the comparison result in the alarm means in accordance with the tape traveling speed for determining the timing of the generation of the alarm substantially independent of a traveling speed of the tape.

Abstract: An indicator for tape running direction and tape remnant amount is provided which comprises a ring counter clocked by a sensing pulse corresponding to the rotation of a take-up reel, a counter for providing count value corresponding to the period of the sensing pulse, comparators each for comparing the count value of the counter with reference data, gate circuits which are connected to the output circuits of the ring counter and controlled by the comparators, and a display unit which receives the output pulses of the gate circuits and includes a plurality of decimal points for indicating the tape running direction and the tape remnant amount. The output signals of the ring counter are shifted corresponding to the tape running direction. The number of signal circuits of the output pulses led from the gate circuit to the display unit depends on the result of the comparison by the comparators.

Abstract: A tape running direction indicator is provided with a sensor for producing a sense pulse corresponding to the rotation of a take-up reel, a ring counter clocked by the sense pulse, and a display unit which receives output pulses of the ring counter and includes decimal points arranged side by side for indication of the tape running direction. The output pulses of the ring counter are shifted corresponding to the direction of the tape running. A glint of each decimal point is successively shifted in the direction of the tape running while flashing.

Abstract: A tape recorder, wherein a plurality of magnets are mounted on the peripheral surface of a rotary disc supported on a magnetic tape takeup (feed) reel in order to measure the travelling distance of a magnetic tape; and when said magnets are brought to rest in such position as causes a lead switch to be operated at the cutoff of a main power source, then a transistor connected to one end of the lead switch is rendered nonconducting by its base resistor, thereby interrupting the input circuit of a counter-display section.

Abstract: A display apparatus for tape running positions is provided with a first pulse generator (36) for generating m first pulses for each revolution of a supply reel (12) in a tape transport system, a second pulse generator (38) for generating n second pulses for each revolution of a take-up reel (14), counter (48, 58) for counting the number of the first pulses during one period of the second pulse, and means (50, 64) for providing preset data to make zero a count value in the counter at the initial stage of tape running. The change ratio of a count value in the counter counted from the start i.e. zero to the maximum of the tape running position is expanded to the square of the rotational speed change ratio of the reel from the beginning to the end of tape winding of the supply (take-up) reel. A counting range of the counter at this time is proportional to m/n. The zero point of the tape running position is displayed zero.

Abstract: An automatic tape recorder-stopping device is described wherein a up-down counter carries out up- or down-counting in accordance with a number of pulse signals issued at a frequency proportional to a number of rotations of a tape reel. The up-down counter generates an output signal when its contents are reduced to zero. The motor circuit for the tape recorder mechanism is opened in response to an output signal from the up-down counter. In this point in time, the counter is held at zero without further counting the pulse signals.

Abstract: A tape recorder is adapted to process at a different priority order by the same logic a magnetic tape run count function and time count processing function and includes a first logic register for counting a detection pulse which is outputted from a magnetic tape run detection section with a cycle enough longer than a maximum processing time required for the time count processing, the detection pulse being outputted during no time count processing time. A predetermined dummy count value is stored in a memory so as to count an interval between detection pulses which are outputted with an enough longer cycle. The dummy count value is supplied by a calculating circuit to said first register.

Abstract: A tape recorder with means for displaying operation modes in the form of alphabetic characters is provided with display control switches which are operated interlocking with operation mode control switches including a fast wind switch, a rewind switch, a record switch and a play switch. Upon actuation of these display control switches, a read only memory produces three first code signals. These first code signals are decoded by three decoders and these decoders produce the corresponding second code signals, respectively. The second code signals are applied to a display means where an operation mode corresponding to an operation mode control switch operated is displayed in the form of alphabetic characters.