JPH0430663Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of a cassette tape recorder, particularly a so-called double-type tape recorder in which two tape recorder devices are housed in one case.

[Prior Art] Conventionally, so-called double-type tape recorders in which two or more tape recorder devices are housed in the same case have been devised, and some have been commercialized.

With such a tape recorder, a so-called dubbing operation in which a signal reproduced by tape recorder device A (or tape recorder device B) is recorded by tape recorder device B (or tape recorder device A) is easy, and the tape recorder It has the advantage of enabling long-term continuous playback/recording from device A to tape recorder device B or vice versa, and has been particularly adopted in cassette tape recorder decks and cassette tape recorders. There is.

[Problems to be solved by the invention] By the way, when performing a so-called dubbing operation in which a signal reproduced by tape recorder device A (or tape recorder device B) is recorded by tape recorder device B (or tape recorder device A), Prior to dubbing,
The following operations were required on the tape being recorded.
That is, the magnetic tape section is connected to the hub reel via the leader tape section, and since recording cannot be performed on the leader tape section, recording must be started after the magnetic tape section has traveled to a position where it contacts the recording head. .

Also, when recording onto a tape that has already been recorded, first perform a no-signal recording operation on the first part of the magnetic tape section, so that the previously recorded signal may remain on the first part of the magnetic tape section. It was necessary to prevent the signal from being recorded in duplicate with the signal to be recorded.

In particular, the seam between the magnetic tape section and the leader tape section cannot be seen after the cassette half is stored in the cassette tape recorder, so normally the hub reel is manually rotated with a pencil, etc., so that the seam between the magnetic tape section and the leader tape section is connected to the recording head. After the tape was moved to a position where it was likely to come into contact with the tape, it was stored in a cassette tape record, which had the disadvantage of being very inconvenient to use.

[Means for Solving the Problem] This invention provides a tape recorder in which at least a first tape recorder device capable of playback operation and a second tape recorder device capable of recording/playback operation are housed in the same case. 1 tape recorder device includes at least a playback means, a tape running drive means, a control logic means for controlling the playback means and the tape running drive means, an operation switch means for inputting an operating signal to the control logic means, and a cassette. The second tape recorder device includes a half detection means, and the second tape recorder device operates at least the recording and reproducing means, the tape running drive means, the control logic means for controlling the recording and reproducing means and the tape running drive means, and the control logic means. An operation switch means for inputting a signal, an erroneous erasure prevention detecting means, a cassette half detecting means, and a tape detecting means for detecting a magnetic tape section and a leader tape section of the tape and inputting the detection signal to the control logic means. and an auto standby switch means for inputting an auto dubbing signal to the control logic means, and the signal from the auto dubbing switch means causes the second tape recorder device to rewind to the leader tape section and from the beginning of the magnetic tape section. After exhibiting an operation of recording a certain part of the signal without a signal, the first tape recorder device starts a playback operation, and the signal played back by the first tape recorder device is recorded by the second tape recorder device. This is a cassette tape recorder characterized by the following.

[Operation] With the above structure, this invention can automatically form a non-recorded part in a certain part from the beginning of the magnetic tape section of the tape prior to the dubbing operation, so that a new non-recorded tape can be used. In this case, you may make the mistake of starting recording from the leader tape section, or even if you use a tape that has already been recorded, the first section of the magnetic tape section is erased, so the signal may not have been recorded before the new recording signal. This makes it possible to prevent the recorded signal from remaining in the first part of the magnetic tape section and to prevent the signal to be recorded from being recorded redundantly, making it possible to easily perform a good dubbing operation.

[Embodiment] In FIG. 1, numeral 1 denotes a first tape recorder device capable of playback operation, numeral 11 denotes a first control logic means, and numeral 12 denotes a first tape running device controlled by the first control logic means 11. A drive means, 13 is a first operation switch means for inputting an operation signal to the first control logic means 11, such as [PLAY], [FF], [REW], 14 is a playback means, and 15 is a first cassette half. The detecting means detects whether or not the cassette half is placed in the storage section.

For example, when the cassette half is placed in the storage part as in the illustrated example, a switch 151, a transistor 152, a resistor 153,
54 and a voltage source (+5V), and when the cassette half is stored, the switch 151 is turned on and the transistor 152 is turned off.

Therefore, approximately 5V (binary signal [HIGH]) is output, and if the cassette half is not stored, switch 151 is turned [OFF] and transistor 1 is turned off.
52 is [ON], so OV (binary signal [LOW]) is output.

Further, 2 is a second tape recorder device capable of recording/reproducing operations, 21 is a second control logic means, 24 is a recording and reproducing means, and 22 is a second tape running drive means, which controls the control logic means 2.
1 controls its operation.

23 is a second operation switch means, such as [PLAY], [REC], [FF], [REW], [PAUSE].
The signals generated by each switch are input to the control logic means 21.

Reference numeral 25 denotes second cassette half detection means, which operates in the same manner as the first cassette half detection means.

Reference numeral 26 employs a tape end detection means which detects stoppage of a hub reel and a change in tape tension, which is commonly used, and generates a signal.
The signal from the tape end detection means 26 automatically stops or reverses the cassette tape recorder to continue the recording/playback operation.

Reference numeral 27 denotes an erroneous erasure prevention means that detects the presence or absence of an erroneous erasure claw on the cassette half, and if there is no erroneous erasure claw, a switch 271 is turned on to set the cassette tape recorder in a recording disabled state.

Reference numeral 28 denotes a tape detection means, which includes at least a light-emitting diode 281, which is an electricity-to-light conversion element, and a light-to-light conversion element.
Phototransistor 282, which is an electrical conversion element
and a waveform shaping circuit 283 that shapes the output waveform of the phototransistor 282 into a waveform necessary for inputting it to the control logic means 21.

The light emitting diode 281 has a tape (not shown) disposed in the middle thereof and faces a phototransistor 282, and the light transmitted from the light emitting diode 281 is detected by the phototransistor 282, and the connection between the leader tape part and the magnetic tape part is detected. The difference in transmittance or the difference in reflectance between the magnetic tape section and the leader tape section is extracted as a signal by irradiating the tape with light from a light emitting diode and detecting the reflected light with a phototransistor.

Reference numeral 29 denotes an auto-dubbing means, which includes at least an auto-dubbing switch 291 for inputting a signal to the control logic means 21.

Next, to explain its operation, when the tape recorder device 1 stores the cassette half on which the signal to be recorded is stored, and the tape recorder device 2 stores the cassette half to be recorded, and the auto dubbing switch 291 is turned on, the control logic A signal from the cassette half detection 15 indicating that a cassette half is stored is input to the control logic means 2.
When a signal indicating that a cassette half is stored from the cassette half detection 25 and a signal indicating that the cassette half is recordable from the erroneous erasure prevention means 27 are input to the tape recorder 1, the tape recorder device 1 remains as it is. In this state, the control logic means 21 sets the tape running drive means 22 to a rewinding state, and rewinds the tape to the end including the leader tape section.

When the tape is completely rewound and the detection signal from the tape end detection means 26 is input to the control logic means 21, the control logic means 21 sets the recording/reproducing means 24 to a no-signal recording state and stops the tape from running. The driving means 22 is set to run at a constant speed (4.75 cm/sec) to perform a so-called recording operation.

Then, the no-signal recording operation continues, and when the tape detection means 28 detects the joint between the leader tape section and the magnetic tape section, the timer in the control logic means 21 is activated by its output for a certain period of time, for example, 5 seconds to 10 seconds. , further continues the no-signal recording, and then the control logic means 22
is inputted to the output control logic means 21 of the tape recorder 1 to start running the tape by the running drive means 12, and to operate the playback means 14 and set the tape recorder device 1 to the playback mode, so that the tape recorder device 1 plays the tape. A so-called dubbing operation in which the signal is recorded by the tape recorder device 2 is started.

[Effects of the invention] In the cassette tape recorder of this invention shown in the above embodiment, by simply operating the auto dubbing switch 291, a certain part of the magnetic tape portion of the tape to be recorded is pre-recorded with no signal and then recorded. Therefore, when using a new unrecorded tape, recording will always start from the magnetic tape section, so there is a possibility that recording will start from the leader tape section, or if you use a tape that has already been recorded. Even if the first part of the magnetic tape section is erased, the signal that was recorded before the new recording may remain in the first part of the magnetic tape section, or the signal that should be recorded may be duplicated and recorded. This has extremely excellent effects in practical use, such as being able to prevent such problems from occurring and easily providing a good recording operation.

The tape terminating means 26 shown in the embodiment may be omitted and the tape detecting means may be used to detect the end, in this case the end of the magnetic tape portion.

However, in this case, it is desirable to continue the rewinding operation for a certain period of time after detecting the seam from the magnetic tape section to the leader tape section, and then start the recording operation.

This is because it is desirable to perform non-recording from the beginning of the magnetic tape section.

Furthermore, before setting the stop state, an operation may be added to rewind a certain portion of the magnetic tape portion, but not to the extent that the beginning portion of the magnetic tape portion is reached.

Furthermore, a recording function, end detection means, and tape detection means may be added to the tape recorder apparatus 1 to enable dubbing from the tape recorder apparatus 2 to the tape recorder apparatus 1.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of this invention. 1 is a first tape recorder device, 2 is a second tape recorder device, 14 is a reproduction means, 12 is a tape running drive means, 11 is a control logic means,
13 is an operation switch means, 15 is a cassette half detection means, 24 is a recording/playback means, 22 is a tape running drive means, 21 is a control logic means,
23 is an operation switch means, 27 is an erroneous erasure prevention detection means, 25 is a cassette half detection means, 28 is a tape detection means, and 29 is an auto dubbing switch means.

Claims (1)

[Scope of utility model registration request] In a tape recorder in which a first tape recorder device 1 that is capable of at least a playback operation and a second tape recorder device 2 that is capable of a recording/playback operation are housed in the same case, the first tape recorder device 1 is equipped with at least a playback means 14. , a tape running drive means 12, and a control logic means 1 for controlling the playback means 14 and the tape running drive means 12.
1, an operation switch means 13 for inputting an operation signal to the control logic means 11, and a cassette half detection means 15, and the second tape recorder device 2 has at least a recording/reproducing means 24.
, the tape running drive means 22, the control logic means 21 for controlling the recording and reproducing means 24 and the tape running drive means 22, the operation switch means 23 for inputting operation signals to the control logic means 21, Prevention detection means 27
and a cassette half detection means 25, a tape detection means 28 which detects the magnetic tape part and a leader tape part of the tape, and inputs the detection signals to the control logic means 21, and an autodubbing signal to the control logic means 21. It is equipped with an auto dubbing switch means 29 for inputting, and according to the signal of the auto dubbing switch means 29,
After the second tape recorder device 2 performs the rewinding operation to the leader tape section and the operation of recording a certain part of the magnetic tape section from the beginning without a signal, the first tape recorder device 1 starts the playback operation and the corresponding A cassette tape recorder characterized in that the signal reproduced by the first tape recorder device 1 is recorded by the second tape recorder device 2.