JPS62103852A - Tape recorder - Google Patents

Abstract

PURPOSE:To execute a dubbing which prevents the leakage of a sound recording and has the silence with a suitable length by inputting the output of a discriminating means, and the action command such as a reproduction, sound recording and music selection, executing a logical processing and providing a control means to control two mechanisms. CONSTITUTION:The second discriminating means 26 inputting a signal from the first discriminating means 25 discriminating the presence and the absence of the music with the signal from a magnetic head 19 of the reproducing mechanism as the input and to discriminate whether or not the no music part continues for the constant time, the third discriminating means 27 discriminating that the reproducing mechanism and the sound recording mechanism come to be a dubbing condition, the fourth discriminating means 16 detecting a reader tape part at the sound recording mechanism side and discriminating the presence and the absence of the reader tape, and the control means 13 and 14 inputting the outputting of the second, third and fourth discriminating means, and the action command such as the reproduction, the sound recording and the selection of the music, executing the logical processing and controlling respective mechanisms of reproduction and sound recording are provided. Thus, the dubbing without the useless silence part can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is equipped with two reverse-type tape mechanisms, and these mechanisms are controlled by logic to continuously dub side A and three sides of the tape. The present invention relates to a tape recorder having a continuous dubbing function that allows continuous dubbing.

Conventional technology In general, two reverse-type tape mechanisms are installed and those mechanisms are controlled by logic.
2. Description of the Related Art There are known tape recorders that have a function for continuously dubbing sides A and B of a tape.

FIG. 3 shows the state during conventional A-B side continuous dubbing, where A shows the playback side and the mouth of FIG. 3 shows the recording side. The playback tape 1 is generally a master tape on which a music tape or the like is to be dubbed, and the recording tape 2 is a raw tape to be recorded. The length of commercially available raw tapes is specified within a certain range according to the JIS standard, but there are variations. Also, the length of music tapes can vary widely. For this reason, it is safe to say that dubbing between tapes of the same length is highly unlikely. For example, if the raw tape is longer,
Since the leader tapes 3 and 4 of the playback tape 1 become the recordable magnetic surface of the recording tape 2, only no signals are recorded for the length of the leader tapes 3 and 4. A non-recorded portion 5 is formed on side A of the tape 2. Next, even though the playback tape 1 contains the song, the recording tape 2 is the leader tape 6.
7 and 4, it is not possible to record only this length of the song, and the tagged tape will have the middle part of the song deleted, making it a bit distorted. When dubbing A and B sides continuously using 22 tape mechanisms, there was a problem in that two parts could not be recorded.For this reason, the leader tape was detected and the playback and recording side Each mechanism Aiz reverse method is used as a countermeasure.

FIG. 4 shows a conventional tape recorder, in which a playback mechanism 17 has a slot 19 for playing back from a tape.
, a motor 9 for driving the tape, an unstuck motor 23 for reverse switching of the head and mechanism, and a detection section 21 having a leader tape detection function. The recording mechanism 18 includes a head 20 for recording a tape, a motor 1o, an unloading motor 24, and a leader tape detecting section 22, and has the same structure as the playback mechanism 1. Logic circuits 13, 14 are for operating the respective mechanisms 17, 18 and amplifiers 11, j2. The amplifier 11 amplifies the signal from the head 19, and the amplifier 12 supplies the signal to the head. The operation command electric switch 8 is used to input axis operation commands such as recording, playback, fast forward, etc. The leader tape detection sections 21 and 22 are generally composed of a light emitting element such as a light emitting diode and a light receiving element such as a phototransistor.

In the tape recorder having such a configuration, when the playback mechanism 17 is in the playback mode and the recording mechanism 18 is in the record mode, when the leader tape detection section 21 detects the leader tape of the playback tape 1, the playback mechanism 17 is restarted. (-At the same time as switching off Wg, the recording mechanism 18 is set to recording pause mode, and after the reverse switching is completed, the logic circuit 13
．． 14, playback mechanism 17 and recording mechanism 1
On the other hand, when the leader tape detection section 22 detects the leader tape of the recording side tape 2, the recording mechanism 18 is switched to reverse and at the same time, the playback mechanism 1
After switching to 7 gold playback pause mode and completing reverse switching;
- The logic circuits 13 and 14 control the playback mechanism 17 and the recording mechanism 18 so that dubbing is completely resumed.

Problems to be Solved by the Invention However, conventional devices do not record (j) from the playback tape.
The master tape that is dubbed to the il tape always has appropriate song intervals (unrecorded parts) like commercially available music tapes.
For example, when dubbing a tape recorded from an F radio receiver as a master tape, the intervals between songs may be very long and there may be gaps between songs, so it is difficult to dub this N. Then, the recorded tape had the same drawback that the gaps between songs were long.

The present invention solves the above-mentioned conventional problems, and allows recording to be done smoothly and to have a non-signal part of an appropriate length, regardless of the presence or absence of a leader tape on the playback tape and the length of the non-signal part. To provide a tape recorder capable of dubbing.

Means for Solving the Problems In order to solve the above problems, the present invention inputs a signal from a magnetic head of a reproduction mechanism and inputs a signal from a first determining means for determining the presence or absence of a song. a second determining means for determining whether or not a timeless section continues; a third determining means for determining whether the playback mechanism and the recording mechanism are in a continuous dubbing state; a fourth determining means for detecting and determining the presence or absence of a leader tape; Third. The present invention is characterized by comprising a control means for inputting the output of the fourth discriminating means and operation commands such as playback and recording 1 song selection, and logically processing the output and controlling each mechanism of the playback and recording.

According to the above-described configuration, the present invention shifts the playback mechanism from the playback mode to the song selection state (hereinafter referred to as blank skip) when no signal on the tape on the playback side continues for a certain period of time during dubbing, and at the same time switches the recording mechanism to the recording mode. The pause state can be maintained until the playback mechanism releases the song selection.
As a result, long non-signal portions of the playback tape can be deleted and dubbed onto the recording tape. Further, when the leader tape section of the recording side tape is detected, the reproduction mechanism can be kept in the reproduction pause state until the recording mechanism completes reverse, and recording can also be prevented from n'6.

Embodiment FIG. 1 is a block diagram of essential parts in an embodiment of the present invention. 19 is a magnetic head, 23 is an assist motor, and 9 is a motor, which are provided on the reproduction mechanism 17 side. Similarly, an amplifier 11, which includes a leader tape detection section 22 in addition to a recording mechanism (MU 18), a BN head 20, an assist motor 24, and a motor 10, amplifies the signal from the magnetic head 19 and determines the presence or absence of a song. The output signal 28 of the determining means 26 is sent to the determining means 25.The output signal 28 of the determining means 26 is input to the determining means 26.The determining means 26 inputs the signal 28 and determines whether the non-track portion continues for a certain period of time.29 is this determining means This is the blank skid signal which is the output of 26.

The amplifier 12 amplifies the recording current flowing to the magnetic head 20. The output signal 31 from the leader tape detection section 22 is input to the leader tape discrimination means 1e, and its output 32 is input to the logic circuits 13 and 14, where the logic circuit 13 sets the reproduction pause state and the logic circuit 14 sets the reverse state. The operation instructions are output to each mechanism 17 and 18. The dubbing determining means 27 determines the current state of both mechanisms 17 and 18. The output signal 3o of the determining means 27 is input to the logic circuit 13.14. Reference numeral 8 denotes an electric switch for inputting operational commands such as playback, recording, dubbing, etc. Also,
The leader tape discrimination means 16, the oil-free time discrimination means 26, the dubbing discrimination means 27, and the logic circuits 13 and 14 are constructed using a microcomputer, and the mechanism 17
．． 18 control means.

FIG. 4 shows a part of the processing procedure of this microcomputer, and the operation of this embodiment will be explained. Now, operation command electric switch 8'f! : If you press the button to input a continuous dubbing operation command, steps 33 to 34 and 35
Proceed to. In step 34, the presence or absence of a song is determined based on the output of the head 19 attached to the playback mechanism 17, and in step 43, the presence or absence of the output of the leader tape detection section 22 attached to the recording mechanism 1 is determined. first,
The operation regarding the reproduction mechanism 17 will be explained.

In step 34, it is determined whether or not there is a song, and if there is no song, it is determined in step 35 whether the thermal time has continued for 8 seconds or more, and if it has continued, in step 36, the playback mechanism 17 is blank skipped, and the recording mechanism 18 is to the recording pause state. If a song is found during this time in step 37,
Eliminate the blank skip in step 38, and
In other words, the reproduction mechanism 17 is in the reproduction state and the recording mechanism is in the recording state. Next, regarding the operation related to the recording mechanism 18, it is determined in step 43 whether or not there is a leader tape, and if there is, step 4
At o, the reproducing mechanism 17 is put into the reproducing pause state, and the recording mechanism 18 is put into the recording reverse state. Step 4
At step 1, it is determined whether the reverse is completed, and if it is completed, dubbing is resumed at step 42. In this way, by determining the presence or absence and length of non-track portions on the playback tape, and performing a blank skip operation in conjunction with applying a recording pause on the recording side, it is possible to not only detect the leader tape of the playback tape. , it is possible to reduce the unnecessarily long unrecorded portion of the playback tape and to dub it.

Effects of the Invention As described above, the present invention provides a blank skip function to the playback mechanism when dubbing sides A and B continuously, and applies a recording pause operation to the recording mechanism in conjunction with the blank skip operation. It is possible to realize all the gibbing without unnecessary non-signal parts. Moreover, by using a microcomputer, the program for the discrimination means can be relatively short, and this microcomputer can be shared with other control systems, making it possible to downsize the entire device and increase its industrial value. It's a beautiful thing.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the tape recorder of the present invention, Fig. 2 is a flowchart showing the control procedure of the tape recorder, and Fig. 3 A-9 shows an explanation of continuous dubbing of sides A and B in the conventional example. 4 are block diagrams of main parts of a conventional tape recorder. 8... Operation command electric switch, 9... Playback mechanism: Zuno motor, 10... Recording mechanism motor, 11... Playback system amplifier, 12...・
...Recording amplifier, 13--Logic circuit for playback mechanism, 14--Logic circuit for recording mechanism, 16--Recording side leader tape discrimination means, 17
...... Playback mechanism, 18... Recording mechanism, 19... Playback head, 2Q... Recording head, 22... Recording side leader tape detection section, 23.
...Playback side assist motor, 24...Recording side assist motor, 25...Means for determining the presence or absence of a song,
26... Means for determining focal length time, 27...
- Discrimination means for determining the dubbing state. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
figure

Claims (1)

[Claims] a second determining means inputting the signal from the first determining means inputting the signal from the magnetic head from the reverse type reproducing mechanism and determining the presence or absence of a song, and determining whether or not a no-track section continues for a certain period of time; a third determining means for determining whether the playback mechanism and the reverse type recording mechanism are in a continuous dubbing state; and a fourth determining means for detecting a leader tape section on the recording mechanism side and determining the presence or absence of the leader tape. and a control means for inputting the outputs of the second, third, and fourth discrimination means and operational commands such as playback, recording, and song selection, and logically processing the outputs and controlling the above two mechanisms. tape recorder.