JPH035943A - Tape unit - Google Patents

Abstract

PURPOSE:To easily search the termination part of newest recorded information by detecting the unrecorded part of a signal to be generated in the termination part of the information. CONSTITUTION:When a user operates a termination detecting button, a control detecting circuit 26 starts being operated and a system control circuit 27a starts transferring a tape 10 by a pitch roller 12 and a capstan 13 at a speed higher than that of a reproducing time. During the transfer of the tape, when the unrecorded part of a control signal is passed through a control head 17a, it is detected by the control detecting circuit 26 since a reproducing signal is not obtained from the control head 17a that there is no signal. The system control circuit 27a receiving a detecting signal sends a rotation stop signal to a capstan motor driving circuit 24 and a reel motor driving circuit 25 and a capstan motor 34 and reel motors 32 and 33 are stopped. Then, the transfer of the tape 10 is stopped. Thus, the record termination part can be easily retrieved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a video cassette tape recorder (hereinafter referred to as VT).
The present invention relates to tape devices such as R.

BACKGROUND OF THE INVENTION Regarding the use of cassette tapes in conventional VTRs, there are many cases in which a cassette tape is overwritten with a variety of information over and over again and used as if it were an endless tape. For example, when recording new information on a cassette that records information from the beginning to the end of a cassette tape, first override and record new information from the beginning of the tape. Next, if there is information to be recorded, a common method is to find the end of the latest recorded information among the information recorded on the tape and record from that end. As a method for searching for this end, a method has also been devised in which tape search information is recorded and used. For example, V
In the HS format, index signals and address signals are written in advance in the control signal recording area of the location to be searched, and when searching, the index signal and control signal are detected to locate the required location.

Problems to be Solved by the Invention However, with the above-described configuration, the operation is complicated because the operator must perform operations to sequentially record index signals and address signals at the location on the tape that is desired to be searched. Furthermore, if you happen to forget to record an index signal or address signal at that location when you have finished recording new information, you will have to search for that location on the tape, making the operation extremely complicated. There was a possibility that it would become.

Additionally, when overriding new information, the operator must locate the point on the tape where the override begins, and
From that point on, the VTR is put into -H playback mode, it is checked whether the overridden information is information that can be discarded, and then the tape is rewound once to the point where it was searched earlier and placed in a recording standby state. However, with the above configuration, even if the operator uses VISS and VASS to find the point on the tape to start overriding, the operator must then put the VTR in playback mode or rewind the tape. However, quite a complicated operation had to be performed before the recording standby state could be established.

In view of the above problems, the present invention allows the operator to easily find the end of the latest recorded information without inputting a new index signal or address signal, and furthermore, the information to be overridden is unnecessary. It is a tape that can be checked to see if the information is correct, and can also automatically set the VTR body to recording standby mode in order to record new information from the end of the tape, eliminating complicated operations for the operator. It provides equipment.

Means for Solving the Problems In order to solve the above problems, the present invention provides a tape device in which a tape contained in a cassette is pulled out of the cassette and mounted on a rotating cylinder to reproduce signals on the tape, a signal reproducing means for reproducing a signal recorded on the tape; a detecting means for detecting the presence or absence of a signal reproduced by the signal reproducing means; a first transport speed in a reproducing mode; and a first transport speed faster than the first transport speed. tape transporting means for transporting the tape at a second transporting speed; and detecting that there is no signal being reproduced by the signal reproducing means while the tape transporting means is transporting the tape at the second transporting speed. means detects the tape transport means to move the tape transport means to the first
At the same time, the main body of the apparatus is switched to the playback mode, and after a predetermined period of time has elapsed, the tape is transported by the tape transport means in the opposite direction to that in the playback mode, and the signal being played back by the signal playback means is and a control means for stopping the tape transport by the tape transport means when the detection means detects that the tape is not present.

The present invention utilizes the characteristic that when information is recorded on a tape using a commercially available VTR, an unrecorded portion of the signal occurs at the end of the information, and with the above-described configuration, By detecting the unrecorded portion, the operator can easily find the end of the latest recorded information without inputting a new index signal or address signal, and furthermore, there is no need for overridden information. It is also possible to check whether the information is valid or not, and to automatically set the VTR main body to a recording standby state in order to record new information from the terminal end, thereby eliminating complicated operations by the operator.

EMBODIMENT A tape device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of essential parts of a tape device that is an embodiment of the present invention, FIG. 2 is a side view of an audio control head of a tape device that is an embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional side view of a main part of a tape device glue motor section according to an embodiment of the present invention; FIGS. Main part block system diagram of a tape device which is an embodiment of the invention, No. 6
8 and 10 are front panel views of a tape device which is an embodiment of the present invention.

In FIGS. 1 and 2, the main body 2 of the apparatus includes a rotary cylinder 11 equipped with a head 8 for recording/reproducing video signals on a tape 10, and a pinch roller 12 that presses the tape 10 through the tape 10. 10 at a constant speed, a take-up reel 14 for winding up the tape 10 downstream from the capstan 13, and a supply reel 15 for supplying the tape 10 upstream of the capstan 13. , a loading means 1ea-1 for winding the tape 10 around the rotating cylinder 11 at a predetermined angle;
ed, a control head 17a for recording/reading a control signal on the tape 10 for transporting the tape 10 at a constant speed, an audio recording head 17b for recording an audio signal on the tape 10, and a control head 17a for recording/reading a control signal for transporting the tape 10 at a constant speed; Audio erasing head 17c for erasing recorded audio signals
, an erasing head 18 for erasing all signals recorded on the tape 10, and guide posts 19a to 19d for guiding the tape 10.

In FIG. 1, FIG. 4, and FIG. 5, the capstan 13 is constructed integrally with a capstan motor 34, and the capstan 13 is
also rotates as a unit.

The capstan motor drive circuit 24 rotates the capstan motor 34 and receives a rotation stop signal, fast forward signal, or rotation reversal signal.
Stop the rotation, rotate faster than during playback, or rotate in the opposite direction.

Further, as shown in FIG. 4, the take-up reel 14 and the supply reel 15 each have a reel stand 3 which is fitted into the take-up reel 14 and the supply reel 15 and rotates integrally with each reel.
0.31, and torque controllable reel motors 32, 33 are directly connected to the reel stand 30, 31, and are configured to rotate integrally with the motor rotor.

The reel motor drive circuit 25 rotates the reel motors 32 and 33, and by receiving a rotation stop signal, fast forward signal, and rotation reversal signal, it stops the rotation of the reel motors 32 and 33, or rotates them faster than during playback. drive or reverse rotation drive.

By the way, while the tape is running, the control head 17
When the control signal being played by a disappears,
When the control detection circuit 26 is activated, it detects no signal and outputs a detection signal to the system control circuit 27a.

Upon receiving the detection signal, the system control circuit 27a sends a rotation stop signal to the capstan motor drive circuit 24 and the reel motor drive circuit 25, respectively.

Furthermore, as shown in FIG.
0 record button 20a, play button 20b, fast forward button 20c1 rewind button 20d, stop button 20e
, End search button 2O to search for the end of recorded information
f is provided.

When the end search button 2Of is operated, the control port detection circuit 26 becomes activated, and at the same time, the capstan motor drive circuit 24 is activated from the system control circuit 27a.
and sends a fast forward signal to the reel motor drive circuit 25.

By the way, generally available VTRs, such as VHS
In the NV-370 among format VTRs, the erasing spatula F 1 s in the running direction of the tape 10,
Cylinder 11. The arrangement order of the control head 17a, the pinch roller 12, etc. is the same as in this embodiment. VT having a tape running system arranged in the above arrangement order
When overwriting new information on a tape on which information has already been recorded, as shown in Figure 3, while erasing the control signal, audio signal, and image signal with the erasing head 18 at point A, the erase head 18 at point A is used to erase the control signal, audio signal, and image signal, while At point B, the head 8 mounted on the cylinder 11 records a new image signal. Furthermore, at point 0, which is a little further downstream, audio signals and control signals are recorded by the audio recording head 17b and the control head 17a. As is clear from this, when new information is overridden, D section (audio signal unrecorded section), E section (image signal unrecorded section)
, F section (control signal unrecorded section), such signal unrecorded sections will always occur.

The operation will be explained below using FIGS. 1 to 6.

First, in FIG. 1, a cassette is installed in the main body 2 of the apparatus, and as shown in FIG.
A tape running system is formed such that the tape 10 is wound at a predetermined angle and in contact with the control head 17a and the guide posts 19a to 19d, and the tape 10 is left in this state on standby without being transported. .

Next, when the user operates the end detection button 2Of, the control detection circuit 27a starts operating and a fast forward signal is sent from the system control circuit 20 to the capstan motor drive circuit 24 and the reel motor drive circuit 25, Stun motor 34 and reel motor 32
．． 33 is driven at a faster speed than during playback, and the tape 10 begins to be transported by the pinch roller 12 and capstan 13 faster than during playback.

Next, while the tape is being transferred, the unrecorded part (part F) of the control signal as shown in FIG.
17a, no reproduction signal is obtained from the control head 17a, so the control detection circuit 2
6 detects that there is no signal, and transmits a detection signal to the system control circuit 27a. The system control circuit 27a that received the detection signal sends a rotation stop signal to the capstan motor drive circuit 24 and the reel motor drive circuit 25, and stops the rotation of the capstan motor 34 and reel motor 3.
2.33, and the transfer of the tape 10 is stopped.

As described above, according to this embodiment, it is possible to easily search for the recording end of the latest recorded information without having to perform the complicated operation of writing index signals and address signals onto the tape. This effect can be obtained.

Next, a second embodiment of the present invention will be described.

In FIG. 7, upon receiving the detection signal, the system control circuit 27b replacing the system control circuit 27a sends the reproduction mode to the mode switching means 28, and also sends the control signal obtained from the control head 17a to the capstan motor drive circuit 24. feeding, controlling the speed of the capstan motor 34,
The reel motor drive circuit 25 is also controlled to control the rotation speed of the reel motors 32 and 33 to the reproducing state. When the mode switching means 28 receives the reproduction mode signal, the mode switching means 28
switch to playback mode.

Furthermore, as shown in FIG.
0, the record button 20a, the playback button 20b,
A fast forward button 20c, a rewind button 20d, and a stop button 20e+ are provided. A search and playback button 20g is provided to search for the end of the recorded information and switch the device body 2 to the playback mode from that end.

When the search/playback button 20g is operated, the control detection circuit 26 becomes activated and at the same time, the capstan motor drive circuit 24 is activated from the system control circuit 27b.
and sends a fast forward signal to the reel motor drive circuit 25.

The operation will be explained below with reference to FIGS. 1 to 4, FIG. 7, and FIG. 8.

First, in FIG. 1, a cassette is installed in the main body 2 of the apparatus, and as shown in FIG.
A tape running system is formed so that the tape 10 is wound at a predetermined angle and in contact with the control head 17a and the guide posts 19a to 19d, and the tape 10 is left on standby in this state without being transferred or fed. ing.

Next, when the user operates the search playback button 20g, the control detection circuit 26 starts operating, and the system control circuit 27b sends a fast forward signal to the capstan motor drive circuit 24 and reel motor drive circuit 25, Stun motor 34 and reel motor 32
．． 33 is driven at a faster speed than during playback, and the tape 10 begins to be transported faster than during playback (by the pinch roller 12 and capstan 13).

Next, while the tape is being transferred, the unrecorded portion (F portion) of the control signal as shown in FIG.
After passing through point a, no reproduction signal is obtained from the control head 17a, so the control detection circuit 26 detects that there is no signal and transmits a detection signal to the system control circuit 27b. The system control circuit 27b that has received the detection signal switches the mode switching means 28
A playback mode signal is sent to the device main body 2 to switch the playback mode, and a control signal obtained from the control head 17a is sent to the capstan motor drive circuit 2.
4, the speed of the capstan motor 34 is controlled, and the reel motor drive circuit 25 is also controlled to control the rotation speed of the reel motors 32 and 33 to the reproducing state. As a result, the playback state is maintained.

As described above, according to this embodiment, it is possible to easily search for the recording end of the latest recorded information without having to perform the complicated operation of writing index signals and address signals onto the tape. Instead, in order to check whether the information to be overridden is unnecessary information, the information to be overridden can be automatically played back, checked, and checked without the user having to operate the device itself.
In other words, it is possible to reproduce and view the content.

Next, a third embodiment of the present invention will be described.

In FIG. 9, the system control circuit 27c, which replaces the system control circuit 27b, sends an operation start signal to the timer circuit 29 upon receiving the detection signal.

At the same time, a reproduction mode signal is sent to the mode switching means 28, and a control signal obtained from the control head 17a is sent to the capstan motor drive circuit 24 to control the speed of the capstan motor 34, and the reel motors 32 and 33 are also in the reproduction state. The reel motor drive circuit 25 is controlled to control the rotation speed to .

When the mode switching means 28 receives the reproduction mode signal, it switches the apparatus main body 2 to the reproduction mode.

Further, upon receiving the end signal from the timer circuit 29, the system control circuit 27C sends a rotation reversal signal to the capstan motor drive circuit 24 and the reel motor drive circuit 25, and upon receiving the second detection signal, the system control circuit 27C starts driving the capstan motor. A rotation stop signal is sent to the circuit 24 and the reel motor drive circuit 25 to stop the capstan motor 34 and reel motors 32 and 33.

Further, when the timer circuit 29 receives the operation start signal,
It starts counting the time, and when the preset time has elapsed, it stops counting the time, resets the count, and sends an end signal to the system control circuit 27c.

Further, as shown in FIG. 10, on the front panel of the device main body 2, there are a record button 20 al and a play button 20 b, which are operation means 20 for selecting the mode of the device main body 2.
, a fast forward button 20c1, a rewind button 20d, a stop button 20e, a search standby button 20h that searches for the end of the recorded information, switches the device body 2 to the playback mode from that end, then rewinds the tape to the end, and stops. is the provision.

When the search standby button 20h is operated, the control detection circuit 26 is activated and at the same time a fast forward signal is sent from the system control circuit 27c to the capstan motor drive circuit 24 and the reel motor drive circuit 25.

The operation will be explained below with reference to FIGS. 1 to 4, FIG. 9, and FIG. 1O.

First, in FIG. 1, a cassette is installed in the main body 2 of the apparatus, and as shown in FIG.
A tape running system is formed such that the tape is wound around the tape 1 at a predetermined angle and comes into contact with the control head 17a and the guide posts 19a to 19d, and the tape IO is left on standby in this state without being transported. .

Next, when the user operates the search and playback button 20h, the control detection circuit 26 starts operating, and a fast forward signal is sent from the system control circuit 27c to the capstan motor drive circuit 24 and the reel motor drive circuit 25. Capstan motor 34 and reel motor 3
The rotation speed of 2.33 is driven at a faster speed than during playback,
The tape 10' begins to be transported by the pinch roller 12 and capstan 13 faster than during playback.

Next, while the tape is being transferred, the unrecorded portion (F portion) of the control signal as shown in FIG.
After passing through point a, no reproduction signal is obtained from the control head 17a, so the control detection circuit 28 detects that there is no signal and transmits a detection signal to the system control circuit 27c. The system control circuit 27c that has received the detection signal sends an operation start signal to the timer circuit 29. At the same time, a reproduction mode signal is sent to the mode switching means 28 to switch the device body 2 to the reproduction mode, and a control signal obtained from the control head 17a is sent to the capstan motor drive circuit 24 to control the speed of the capstan motor 34. , the reel motor drive circuit 25 is also controlled to control the rotation speed of the reel motors 32 and 33 to the reproducing state. As a result, the playback state is maintained. When the preset time has elapsed, the timer circuit 29 sends an end signal to the system control circuit 27c.

The system control I/roll circuit 27c is the timer circuit 2.
When the end signal is received from 9, a rotation reversal signal is sent to the capstan motor drive circuit 24 and the reel motor drive circuit, the capstan motor 34 and the reel motors 32 and 33 rotate in reverse, and the tape 10 is rewound. When the unrecorded part (part F) of the control signal passes through the control head 17a again, no reproduction signal is obtained from the control head 17a, so the control detection circuit 2B
detects that there is no signal, and transmits a second detection signal to the system control circuit 27c. Having received the second detection signal, the system control circuit 27c sends a rotation stop signal to the capstan motor drive circuit 24 and reel motor drive circuit 25, stops the capstan motor 34 and reel motors 32 and 33, and stops the tape 10. Stop the transfer. As a result, the tape 10 is again stopped and held at the no-signal position, that is, at the new information recording end position.

As described above, according to this embodiment, it is possible to easily search for the recording end of the latest recorded information without having to perform the complicated operation of writing index signals and address signals onto the tape. In addition, in order to check whether the information to be overridden is unnecessary information, the user can automatically play back and check the information to be overridden without having to operate the device itself. Furthermore, since the tape is automatically rewound to the point where overriding begins, the user can prepare for overriding without any complicated operations.

The operation of the embodiment of the present invention has been explained above, but
In this embodiment, since the control signal was used as the signal recorded on the tape, a control head was used as the signal detection means. It is clear that the same effect can be obtained even if the head 8 or the audio recording head 17b is used.

Further, in the embodiment of the present invention, in order to drive the reel,
Although dedicated reel motors were used for each, there is no problem in driving with a single reel motor or using the driving force of a capstan motor.

Furthermore, in the embodiment of the present invention, the end search button, search playback button, and search standby button were operated with the tape wound around the cylinder and tape transport stopped, but in the play mode, pause mode, or fast forward mode. Even if you operate each button, the same effect can be obtained without any problem.

Effects of the Invention As described above, the present invention utilizes the characteristic that when information is recorded on a tape, an unrecorded portion of the signal occurs at the end of the information, and detects the unrecorded portion. ,
The operator can easily find the end of the latest recorded information without inputting a new index signal or address signal, and can also check whether the overridden information is unnecessary information. In addition, the main body of the apparatus is automatically set to a recording standby state in order to record new information from the terminal end, thereby eliminating the need for complicated operations by the operator.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts of a tape device that is an embodiment of the present invention, FIG. 2 is a side view of an audio control head of a tape device that is an embodiment of the present invention, and FIG. 4 is a cross-sectional side view showing the main parts of the reel motor section of a tape device according to an embodiment of the present invention; FIGS. 5, 7, and 9 are diagrams showing recording states of various recorded signals; Main part block system diagram of a tape device which is an embodiment of the present invention, 2nd...device main body, 8. ...Head, 1o...
Qi6 11...Rotating cylinder, 13...Capstan, 17a...Control head, 17b
...Audio recording head, 17c...Audio erasing head, 18...Erasing head, 20f...Terminal search button, 20g...Search playback button, 2oh...
・Search standby button, 24... Capstan motor drive circuit, 2S... Reel motor drive circuit, 26... Core) o-le detection circuit, 27
al 27 b+ 27 c...system control circuit, 28...mode switching means,
29...Timer circuit, 32.33...Reel motor, 34...Capstan motor.

Claims (3)

[Claims] (1) A tape device in which a tape contained in a cassette is pulled out of the cassette and mounted on a rotating cylinder to reproduce signals on the tape, and a signal reproducing means for reproducing the signals recorded on the tape. , a detection means for detecting the presence or absence of a signal reproduced by the signal reproduction means; and a tape transport means for transporting the tape at a first transport speed in a reproduction mode and a second transport speed faster than the first transport speed. When the tape transport means is transporting the tape at the second transport speed, the detection means detects that there is no signal being reproduced by the signal reproducing means, thereby causing the tape transport means to stop transporting the tape. A tape device comprising a control means for stopping the tape device. (2) The control means controls the tape transport means by detecting that there is no signal being reproduced by the signal reproduction means while the tape transport means is transporting the tape at the second transport speed. 2. The tape device according to claim 1, wherein the tape device is switched to the first transfer speed and the device main body is switched to a playback mode. (3) The control means controls the tape transport means by detecting that there is no signal being reproduced by the signal reproduction means while the tape transport means is transporting the tape at the second transport speed. is switched to the first transfer speed, and the main body of the apparatus is switched to the playback mode, and after a predetermined period of time has elapsed, the tape is transferred by the tape transfer means in the opposite direction to that in the playback mode, and the tape is played back by the signal playback means. 2. The tape device according to claim 1, wherein the detecting means stops tape transport by the tape transporting means when the detecting means detects that there is no signal.