JPS6090479A - Error picture record rewinding mechanism - Google Patents

Abstract

PURPOSE:To enable the titled mechanism to record a new picture continuously to ordinary picture recording even when a picture recording error occurs by recording the signal detected the abnormal attitude of a video camera to a magnetic tape, and rewinding a magnetic tape after recording. CONSTITUTION:When a leg lock switch 3 is turned to ON side, an attitude detecting device 1 is connected to an abnormal signal 4, and a video and voice signal are recorded on the magnetic tape 10. When under this condition, a video camera shifted from the ordinary attitude and an attitude detecting device 2 is turned to on-state, Q' output of FF circuit 5 goes to L, the transistor Tr1 is conducted and a lamp 6 lights up. When the photographing is continued even the lamp 6 lights up, a reset button 13 is pushed. When the reset button 13 is not pushed for a fixed time, the reverse rotation instruction means 14 is operated, a transistor Tr5 turns on, a buzzer 18 rings, a motor 23 is reversely rotated by the reverse rotation signal from the system control part 20 and the tape is rewound.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an error recording rewinding mechanism, and even if an error recording is made in the middle of a cut of a photograph due to an abnormal posture of the camera, the rewind mechanism for rewinding the error recording in the middle of the cut is possible. This is intended to allow you to re-record the portion of the screen that was accidentally recorded.

Generally, in a camera for a portable video tape recorder, when the record button, which is a recording switch, is pressed, the record button is locked, and recording continues even if the user releases the finger from the record button. To release the locked state and stop recording, you must press the rec button again to return it to its original position. Then, by pointing the video camera 2 at the subject and pressing the REC button and pressing the REC button again after FV+a certain period of time has elapsed, consecutively photographed screens called cuts are recorded.

With this type of camera, even if you release the locked state of the lock button, it may not be released due to a mistake, or if you forget to do so, the micrometers you need will become a sword! If
'-II 7+, I'm going to have a hard time. For example, after shooting one shot, you forget to release the lock.
If you walk around with a video camera (V) or leave the video camera unattended, unnecessary images such as the sky, the ground, or the left field θ1 may be recorded in succession to the shot. Become.

If such a recording error occurs, it is most preferable to remove the recording error portion and record a new cut consecutively to the previously recorded cut. Since the recording was incorrect, I was unable to correct such recording errors and it was rare. Therefore, in reality, the Cheebu 1111 only reproduces the normal recorded portion of the recording medium that contains recording errors, or if such a collection method is not available, unnecessary images are continuously reproduced. Ta. Therefore, there is a strong demand for a erroneous recording rewind mechanism that, when a recording error as described above occurs, deletes the portion and enables a new recording to be made in succession to the previous normal recording.

The present invention has been made in view of such a need, and provides a mistake recording rewind mechanism that enables a new recording to be made in succession to the previous normal recording when a recording error as described above occurs. The purpose is to provide The misrecording rewind mechanism of the present invention that achieves the above object includes an attitude detection device that detects an abnormal attitude when the video camera deviates from a horizontal attitude during normal recording, and a magnetic tape for recording. abnormal signal recording means for recording an abnormal signal on the magnetic tape when an abnormal posture is detected by the attitude detection device; Reverse rotation command means to input a rotation command signal, and is it rewound? The abnormal signal is reproduced from the +U air tape, and when the recording start point of this abnormal signal is detected, a stop command (JII with stop command means capable of outputting No. a) is generated to stop the capstan motor. Ru. I did this because the normal
The camera is in a power\heiriki posture, 1 is recording rJ
This is because I noticed that when a recording mistake occurs unintentionally, the camera gets kicked in the hand and turns into a cram school, or the fox gets angry and lies down.

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

FIG. 1 shows a first embodiment of the "non-explosion". As shown in the figure, the attitude detection device 1 includes an attitude detector 2, a resistor <<, and a capacitor 1. Of these, the attitude detector 2 is i
■The movable contact 2a and the fixed contact 2b form ti+', and when the video camera is in a normal horizontal position, the movable contact 2a and the fixed contact 2b are in the OFF state due to the VLL misalignment. When the video camera deviates from the normal posture, the movable contact 2a contacts the fixed contact 2b and turns on. On the other hand, the resistor R2 and the capacitor C8 prevent the adverse effects of chattering caused by the attitude detector 2. In addition,
Various specific examples of this attitude detection device will be described later.

When the retlock switch 3 (JN ill+) is turned on, the attitude detection device 1 and the abnormal signal recording means 4 installed at the subsequent stage are connected, and the video track and audio track of the magnetic tape 10 are connected by a magnetic head (not shown). Video and audio signals are recorded in UF.
If it is turned on to the F side, no operation will take place.

The abnormal signal recording means 4 includes a flip-flop circuit 5, a lamp 6, an oscillator (JSC) 7, a recording amplifier 8, a cue head 9, and transistors 'l'r 1 and Tr 2 .

]゛r3. Note that Vcc indicates a reference power supply voltage. Therefore, when the retlock switch 3 is turned on (JIN side), if the posture sensor 2 is turned on due to deviation of the posture camera from its normal posture, the level at point A or the high level (hereinafter abbreviated as H) will change from the low level (hereinafter abbreviated as H). Therefore, a negative pulse is input to the set terminal S of the flip-flop circuit 5, and the output of the terminal Q becomes LK.Therefore, the transistor 'l''rl becomes the conductor 111J.
The state becomes jM and lamp 6 lights up. Moreover, since this lamp 6 is installed inside the viewfinder, the photographer looking into the viewfinder can see the lighting of the lamp 6 during recording, and will know that the camera has deviated from its normal position. . In addition, the set terminal S + flatness pulse of the flip-flop circuit 5 is input, and the output of the terminal Q becomes H.
When the transistor 'l'l-3 becomes non-conductive, an abnormal signal (for example, I K
) i z sine wave signal) a is the transistor 'l'r2
The signal then passes through a recording amplifier 8 and reaches a cue head 9, where it is recorded on a cue track of a magnetic tape 10. The recording mode is shown in FIG. 2. This second
In the figure, 10a is a cue track, 10b is a video track, and 10C is an audio track. Note that the cue track 10a generally records a signal for cueing the recording, a time code that can be used for tape editing, and the like.

On the other hand, when photographing the ground or the sky, the video camera deviates from the horizontal stationary mosquito field, so as mentioned above, the lamp 6
lights up or the fire source signal a is output, but if you want to stop shooting the ground or sky, press the reset button 13.
It's okay to press .

-1) Press the reset button 13 and input a negative pulse signal to the reset terminal of the flip-flop circuit 5.
79277071 The terminal Q of circuit 5 is set to L, and the terminal Qf
l-i) Because of iK, the lamp 6 goes out and the abnormal signal a
output is stopped. In the end, after pressing the reset button 13a, the video signal and the audio signal are recorded on the magnetic tape 10, but the abnormal signal a is not recorded.

The reverse rotation command means 14 includes a resistor l<2 and a capacitor C2.
a mono multivibrator 15 having a resistor 1<3 and a capacitor Cs −, a flip-flop circuit 17, a buzzer 18,
Oscillator ((JSC119 and system control unit 2)
0 and transistors Tr 4 #Tr 5. Therefore, if the fs'l detector 2 is turned on while the reclock switch 3 is turned on, and the reset switch 13 is not pressed, the free ramp is zero.

From the Q terminal of circuit 5 to the monomartino (1 to ibrator 15)
The signal that becomes 1 is input. If this signal is input manually, it will be output from Ibrator 15 to C21 and 2.
An H signal C having a pulse width determined by a time constant of .

In this case, the time constant determined by C2R2 should be sufficiently longer than the time required for the photographer to press the reset button 13 when necessary (when photographing the ground or nitrous) after noticing that the Shinpro light is on. It is set. Furthermore, Czi
(After the llIr fixed time determined by z, riiJ signal C
When LK becomes LK from l(, H signals d and J, and fts signal e are output from the mono multivibrator 16. Then, the flip-flop circuit 17 is connected by b3 d, and its Q terminal becomes Yl 9, and the transistor "l" rs becomes conductive, so the oscillator 19
The buzzer 18 rings due to the output. -] No. 8 e or system control terminal 20 (l L<
The reverse rotation command signal f is output from the system control section 20 by the Ic human force field. Note that if the reset button 13 is pressed before the signal C changes from H to L, in other words, before the time determined by the time constant of 02 R2 has elapsed since the lamp 6 was turned on, the mono multivibrator 15
．． 16 is reset, the reverse rotation command signal f
is never output.

Furthermore, in this embodiment, ANDK) 21 and servo circuit 22
and the capstan motor 23 are seen. The system control unit 2 of the reverse rotation command means 14
When the reverse rotation command signal f is output from 0, this signal f passes through the AND gate 21 and reaches the servo circuit 22. This causes the servo circuit 22 to rotate the capstan motor 23 in the reverse direction. Therefore, the magnetic tape 10, which has been sent in the forward direction for recording, is now sent in the reverse direction in a rotary ink state. The reason why the reverse rotation command signal f is output in this way is because the photographer is photographing on the ground where he has no intention of photographing or when he is not photographing empty grapes, so the attitude detector 2 is turned on and the reset button 13
is not pressed, and in this case, the magnetic tape 10 has a recording part number "a". In other words, in this embodiment, if an abnormal signal is recorded in the magnetic tool 110 by inadvertently photographing the ground or the sky, the buzzer 18 will sound and the alarm will sound after the time determined by the time constant of U2R2 has passed. A mechanism for running the magnetic tape 10 in the opposite direction is constructed.

The stop command means 24 is composed of a regenerative amplifier 25, a detection rectifier circuit 26, and a retrigger pull type mono multivibrator 27 having a resistor R4 and a capacitor C4.The waveform shown in FIG. The operation will be explained with reference to the diagram.Alphapella in the diagram) fJ is centered on the waveform diagram in Figure 3. When the tape 10 on which the abnormal signal a is recorded is run in the opposite direction, the abnormal signal a is reproduced by the cue head 9 and input to the stop command means 24. This abnormal signal a is
After being amplified by a reproducing amplifier 25, it is detected and rectified by a detection rectifier circuit 26, and a monomarte vibrator 27 is set by the detected and rectified signal g. When the mono multivibrator 27 is completely set, an H signal is output from its terminal q to the OR gate 29. The OREET 29 inputs the H signal i to the single input terminal of the AND CATE 21 during a period in which either the signals g or 11 is h. Also, this signal i
When becomes L, this acts as a stop command signal (this will be explained in detail later). On the other hand, in the system control section 20, since the reverse playback signal input terminal 2OR is connected to the reset switch 13 and the Q terminal of the monomultipipe brake 16, the signal e becomes L due to the fall of fb signal C, and the reverse playback state f is input to the other power terminal of ANDKATE 21. Therefore, the signal H is outputted from the encoder 21, and the circuit 22 and the capstan motor 23 are switched from the recording state to the reverse playback state. In addition, the mono multivibrators 15 and 16 are reset in the L state of (A-e).

In this way, the magnetic head 110 continues to travel in the opposite direction, and when the cue head 9 arrives at the Dri where the strange number a is not recorded, the abnormality signal a is sent to the stop command means 24 manually or stopped. Monomulti (to ibrator 27 (ri issue g)
The input will be stopped.

The stop command signal i is output from 1 to 1 after the abnormal signal a is no longer input for a predetermined time determined by the time constant of 04 R4 (after a short period of about a few seconds has elapsed) in order to enable continuous shooting. .When the stop command signal i becomes L, the stop terminal 20S of the system control section becomes input, and the input terminal of the AND gate 21 becomes L, and the capstan motor 23 stops, and the magnetic tape 1
0 stops. In this way, the abnormal signal a disappears.
``!' The starting point where the recording section started to curve will also stop at about 15 frames towards the head of this cut.

Also, at the same time as the stop command 161 g or l-1 or L-, 1 is crossed, the flimp-flop circuit 17 is outputted from the terminal (i) of the monomulti-no-'ibrator 27 because the f1 signal i is present from L to 11. The reset is missed, which causes the p buzzer 18 to ring or stop.

After correcting the erroneously recorded portion, the normal continuous shooting technique can be used as is when recording a new screen following the normal screen. For example, as mentioned above, one step further than the error recording part (recording start point of abnormal signal a)
Since rewinding is performed by about 5 frames, the first 13 frames are played back and new recording starts from the next 2 frames. In this way, a new screen can be recorded following the beautiful screen in the first half of the cut.

FIG. 4 shows a second embodiment of the invention. In this example,
Since the reverse rotation command means 14 is the same as the first embodiment shown in FIG. 1 except that it is composed of a system control unit 20 and a miss back button 28, the same parts are given the same reference numerals and the explanations are redundant. is omitted. In this embodiment, by pressing the mistake back button 28 after a mistake recording occurs,
The reverse rotation command signal f is output, and the magnetic tape 10 is run in the reverse direction. Thereafter, re-recording is performed in the same manner as in the first embodiment.

In both of the above two embodiments, the abnormal signal a is recorded on the cue track 10a, but it may be recorded on other parts of the magnetic tape 10. In addition, by using the seven-way multi-vibrator 27, the magnetic head of "recording month" is stopped at a position further toward the head of the cut, for example, 15 frames, than the starting point of the abnormal signal a. It may be stopped at the starting point.

Next, specific examples of each persimmon of the posture detection device will be explained.

First, the posture detection device 30 shown in FIG.
It is composed of a metal piece 30a and two contacts 30b, and if the camera is tilted or deviates from its normal position due to a path, the metal piece 30a will contact one of the contacts 30b and 30b. Detect.

The posture detecting device 31 shown in FIG. 6 is composed of a rotor 31a provided for one swing motion and two reed relays 31b. 31a approaches the powerful reed relay 31b, and the reed relay 3
An abnormal posture is detected when 1b is closed.

The attitude detection device 32 shown in FIG. 7 includes a tube 32a made of an insulating force, and contacts 32b, 32c', and 32d arranged at both ends of the tube 32a, respectively.

32e, and a sphere 32f made of a conductive phase provided within the tube body 32. And the sphere 32 is in an abnormal posture.
f is located at the end of the tube body 32a, so that the contact point 32
Abnormal posture is detected by electrically connecting contacts 32d and 32e.

The attitude detection device 33 shown in FIG. 8 includes a light emitting element 33a,
A light receiving element 33b and a transparent and curved tube body 33c
and a black sphere 33d. In this device 33,
In the normal posture, the light from the light emitting element 33a is blocked by the sphere 33d, and 'l! '71'+dress j9 Il, “j
Then, the sphere 33d moves and the light emitted from the light emitting element 33a is received by the light receiving element 33b, resulting in a different iVr shape.
Detect trends.

As explained above in detail with Example 1, according to the present invention, when the recording tube is inadvertently turned off in the middle of the 191 cut, when the mistake recording part is unnecessary, the mistake recording 1 + 141 is started. You can unroll the magnetic tape. I used to have a good screen in the first half.
,Well, edit by re-recording from the middle? ] You can cut the unsightly screen without causing any damage.

[Brief explanation of the drawing]

@Figure 1 is a circuit diagram showing the first embodiment of the unexploded EJI, and the second figure is
The figure shows a magnetic tape recorded according to this embodiment. 3 is a waveform diagram of each part of the first embodiment, and FIG. 4 is a circuit diagram showing the second embodiment of the present invention. Figures 55 to 8 are attitude detection FIG. 3 is an explanatory diagram showing various specific examples of the device. In the drawing, 1 1.30, 31, 32.33 are attitude detection devices, 3 is a hand switch, 4 is an abnormal signal recording means, 9 is a cue head, 10 is a magnetic tape, 14 is a reverse rotation command means, 23 is a capstan 24 is a stop command means, a is an abnormal signal, f is a reverse rotation command signal, and l is a stop command signal. Patent applicant: Fuji Yoshin Film Co., Ltd. Representative Patent Attorney
Light surface ±u1) (1 other person) Figure 5 Figure 6 Figure 1b Figure 8 Procedure Ura City Book December 23, 1982 Relationship with the person making the amendment, Fuji Photo Film Co., Ltd. 6, 210 (520) Nakanuma, Minamiashigara City, Kanagawa Prefecture. Detailed explanation J 12) Cover and drawing 7,
Contents of amendment (7-1) No. 6 in the “Detailed Description of the Invention” column of the specification
"Reference power source power" written on the 11th line of the page is corrected to "power source power". (7-2) Figure 3 of the drawings is amended to match the attached drawings. 8. Inventory drawing of attached documents.

Claims (1)

[Claims] The video camera is a normal recording II! an attitude detection device that detects an abnormal attitude if the attitude deviates from the almost horizontal attitude in which the II is performed;
j Abnormal signal recording means for recording on magnetic non-magnetic tape; reverse rotation command means for inputting a reverse rotation command signal to the capstan motor so as to rewind the magnetic tape in the loading state after recording the abnormal signal; A stop command means for reproducing an abnormal signal from a magnetic tape and outputting a full stop command signal for stopping a capstan motor when the recording start point of the abnormal signal is detected.