JPS59198551A - Tape recorder - Google Patents

Abstract

PURPOSE:To attain correct search of a recording start position when a signal is recorded newly on a magnetic tape recorded with an address signal by executing a cue or a review taking a position on the magnetic tape recorded with a final address signal as a start point and detecting the end of a group signal in succession to the final address signal in response to the detection of a silent part on its way. CONSTITUTION:In setting a magnetic tape 1 on which address signals A1-A3 are recorded in the recorder and turning on a recording stand-by key on an operation keyboard 8, an address signal detecting circuit 6 detects sequentially an address signal on the magnetic tape 1 and stores the signal in a storage circuit 12. In turning on an address signal recording key on the operation keyboard 8 with the pause or recording pause state, an address signal A4 next to the final address signal A3 is recorded through a recording head 2b. Further, a new group signal is recorded in succession to the address signal recorded after the group signal of the address by operating the recording key and aplying a group signal to be recorded after the address signal A4 to a tape information input terminal T2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder, and particularly to a tape recorder capable of recording address signals and detecting recorded address signals.

Conventionally, a series of acoustic signals such as one piece of music or one unit of a language learning material is treated as a group signal, an address signal indicating the recording start point is recorded at the beginning of each group signal, and the recorded address signal is detected. Accordingly, various tape recorders have been proposed in which it is possible to easily locate the beginning of any desired group signal.

However, in general with this type of tape recorder,
When recording a new tape after the last group signal on a tape that has been partially recorded using address signals, it is necessary to detect the end of the group signal after the last address on the tape. The end of the tape is detected by repeatedly manually fast-forwarding, rewinding, and reproducing the tape, or by detecting the presence of a silent section for a predetermined period of time or longer.

The former method requires time and effort to detect the end. On the other hand, the latter method is an indirect method of detecting silent parts over a certain period of time, so if a croup signal is recorded after a certain period of time, this bruch signal will be ignored. Another drawback is that the address signal to be recorded next must be determined using another method.

The present invention has been made in order to eliminate the drawbacks of the conventional ones described above, and detects all address signals recorded between both ends of a magnetic tape during a cue or review operation performed in response to a key operation. The detected address signal is stored as address information, a cue or review operation is performed at one end of the magnetic tape after all of the address signals have been detected, and the address signal detected during the cue or review operation is stored as the address signal. The final address signal on the magnetic tape is detected by comparing with the address information, and a cue or review operation is performed starting from the position on the magnetic tape where this final address signal is recorded, and a silent part is detected in the middle. By detecting the end of the group signal that follows the final address signal accordingly, the recording start position can be easily and highly reliably found when newly recording on a magnetic tape using the address signal. The purpose of the present invention is to provide a tape recorder with the following features.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram showing an embodiment of a tape recorder according to the present invention. In the figure, ■ is a magnetic tape that is run in front of the playback head 2a and recording head 2b by a tape running system (not shown), and 3 is a magnetic tape that amplifies the playback signal from the playback head 2a and tape information output terminal T1.
A reproduction amplifier 4 is a recording amplifier that amplifies the recording signal input from the tape information input terminal T2 and applies it to the recording head 2b.

The playback system consists of a playback amplifier 3, a silent part detection circuit 5 for detecting a silent part on the magnetic tape 1, and an address signal detection circuit 6 for detecting an address signal on the magnetic tape 1, and the recording system includes: It consists of a recording amplifier 4 and an address signal recording circuit 7 that generates an address signal to be recorded on a magnetic tape. By the way, the address signal is given as a continuous integer from 1 to n sequentially from the beginning of the magnetic tape 1 in order to convert the position on the magnetic tape 1 into an absolute address. It is recorded in the form of binary numbers formed by combinations.

Reference numeral 8 indicates operation keys for causing the tape recorder to perform normal operations, such as repeat, play, fast forward, rewind, pause, stop, cue, review keys, etc., as well as keys provided based on the present invention, which will be described later. This is an operation keyboard with a recording standby key and an address signal recording key.

Reference numeral 9 denotes a control circuit which controls the mechanism drive circuit 1o of the tape recorder based on signals from the operation keyboard 8 to bring the mechanism into a state corresponding to the operation keys.

Note that the mechanism section is capable of performing a reverse operation at the end of the tape or at any desired location.

This control circuit 9 uses a drive circuit 10 to issue a cue or review command to the mechanism section in response to the operation of the recording standby key, causes the drive circuit 10 to cause the mechanism section to perform a cue or review operation, and responds to the operation of the address signal recording key. In response, an address recording command is issued to the address signal recording circuit 11, and the address signal recording circuit 11 causes the recording medium 2b to record the address signal on the magnetic tape 1. 12 is written (
, one circuit sequentially stores address information in response to detection of an address signal by the address signal detection circuit 6.

Reference numeral 13 denotes a comparison calculation circuit which compares the address signal stored in the storage circuit 12 with the address signal from the address signal detection circuit 6 in response to a signal applied from the control circuit 9 when the recording standby key is operated. The final address recorded last is detected, and a detection signal is applied to the control circuit 9 in response to the detection of this final address.

After receiving the detection signal, the control circuit 9 controls the drive circuit 1 in response to the silence detection signal generated by the silence detection circuit 5.
0, and the drive circuit 10 causes the mechanism section to enter a tape running stop state such as stop, pause, recording pause, etc. in which running of the tape is stopped.

The operation of the above configuration will be explained below with reference to FIG. 2.

As shown in FIG. 2, the magnetic tape 1 on which the address signals A1 to A3 are recorded at the head of each of the group signals G1 to G3 is inserted into the tape recorder, and the recording standby key on the operation keyboard 8 is turned on. do. In response to this turning on of the recording high key, the control circuit 9 issues a review command to the drive circuit 10, causing the mechanical section to perform a review operation. During this review operation, the playback head 2a is in contact with the magnetic tape 1), and the address signal detection circuit 6 sequentially detects the address signals on the magnetic tape 1 based on the playback signal from its output. The address signals are sequentially stored in the storage circuit 12.

When the beginning end of the magnetic tape 1 is reached by this review operation, a reverse command is applied to the control circuit 9 (reverse command) to the drive circuit 10 in response to a signal from an end detection circuit (not shown) to put the mechanism into a cue operation state. During this queue operation, address signals are sequentially stored in the storage circuit 12. Through this queue operation from the beginning to the end of the magnetic tape 1, all of the address signals on the magnetic tape 1 are detected. Address information is written in the storage circuit 12.

Then, the reverse operation is performed again at the end of the magnetic tape 1, and the review state is resumed. The address signal detected in this review operation is compared with the address information stored in the storage circuit 12 in the comparator circuit 13, and when the recorded portion of the address signal A3 in the magnetic tape 1 reaches the playback head 2a, the address signal is stored in the memory circuit 12. A match is made between the storage address signal in the circuit 12 and the detected address signal to detect the final address, and a signal is applied from the comparison calculation circuit 13 to the control circuit 9 in response.

Based on the signal from the comparison/arithmetic circuit 13, the control circuit 9 issues a reverse command to the drive circuit 10 to bring the mechanism into a queue state.

When a silent part on the magnetic tape 1 is detected by the silent part detection circuit 5 based on the playback signal in the cue state, a signal is applied from the silent part detection circuit 5 to the control circuit 9, and the control circuit 9 is controlled accordingly. The circuit 9 issues a tape running stop command to the drive circuit 10. This causes the mechanism to be placed in a stop, pause, or recording pause state, for example.

In this state, when the address signal recording key in the operation keyboard 8 is turned on, the control circuit 9 is activated by the drive circuit 10.
At the same time as outputting a recording command to the address signal recording circuit 7
by applying a signal to the group signal G3 in the magnetic tape 1.
After that, the next address signal A4 after the final address signal A3
to recording ・Record through throat 2b, address signal A
When the recording in step 4 is completed, a tape running stop command is issued to the drive circuit 10 in order to bring the mechanism into the strike/knob, pause, or recording pause state again.

After that, while operating the recording key, address signal A4
The group signal to be recorded after the tape information input terminal T2
By applying , it is possible to record a new group signal following the address signal recorded after the group signal of the final address.

As is clear from the above description, new recording on the magnetic tape 1 can be performed simply by operating the recording standby key and the recording key to start recording, providing extremely good operability.

Incidentally, in the above-described embodiment, the address information stored in the storage circuit 12 can be displayed on a display or the like as necessary.

Furthermore, as shown in FIG. 3, the magnetic tape 1 on which a new group signal is to be recorded may be such that only the address signal X is stored and no group signal is recorded after that. In order to cope with such a case, if there is no group signal after the address signal, that address signal may be ignored so as not to be detected as the final address.

Furthermore, in the above embodiment, the operation by the recording stun key and the operation by the address signal recording key are separated, but both operations are performed continuously by one key, and the tape is in the running state at the end of recording the address signal. It is also possible to make it stop.

Furthermore, in order to be compatible with the magnetic tape 1 shown in FIG. 4, in which the recording of a new group signal must be performed by erasing the previously recorded signal, it is necessary to record a new group signal continuously from the beginning of the tape. It is only necessary to consider only the information of the address signal that is displayed as the address signal.

As described above, according to the present invention, when a new recording is attempted on a magnetic tape recorded using an address signal,
To obtain a tape recorder which can automatically, quickly and reliably find a recording start position by key operation, and has excellent operability and high reliability.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the tape recorder according to the present invention, FIG. 2 is an explanatory diagram showing the operation of the tape recorder shown in FIG. 1, and FIGS. 3 and 4 show operations of modified examples, respectively. It is an explanatory diagram. 5... Silent part detection circuit, 6... Address signal detection circuit, 8... Operation keyboard, 9... Control circuit, 12
. . . Memory circuit, 13 . . . Comparison calculation circuit. Patent Applicant Pioneer Corporation No. 1 Cause Figure 2] 1 [' [Su No. 30

Claims (1)

[Claims] An address signal detection circuit detects all address signals recorded between both ends of the magnetic tape during a cue or review operation performed in response to a key operation, and the address signal detected by the address signal detection circuit is used as address information. a memory circuit for storing address signals; and a memory circuit for performing a mock or review operation at one end of the magnetic tape after all address signals have been detected by the address signal detection circuit, and an address signal detected by the address signal detection circuit during the cue or review operation. a circuit for detecting the final address signal on the magnetic tape by comparing it with the address signal stored in the storage circuit; and a starting point at the position on the magnetic tape where the final address signal detected by the circuit is recorded. A tape recorder comprising a circuit for performing a cue or review operation and detecting the end of a group signal following a final address signal in response to detection of a silent section during the cue or review operation.