JPH047005B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording and reproducing system that records and reproduces signals corresponding to a subject image on a recording medium.

In recent years, home video tape recorders (hereinafter referred to as
With the spread of VTRs, systems that integrate VTRs and video cameras have been proposed, which can record as easily as 8mm cameras and also have the ease of playing back VTRs. Most of them are simply a combination of a VTR and a video camera, so they are heavy and cannot achieve the ease of shooting with an 8mm camera. In addition, the above-mentioned integrated system has so-called slow playback, still playback,
If you try to add functions such as high-speed search, you will have to equip the recorder with operation keys for special playback (high-speed playback, still playback, reverse playback, etc.), which will impair the operability during recording and increase the size of the device. This is contrary to the objectives of a video system, such as compact size, light weight, and good operability.

The present invention has been made in view of these drawbacks, and it is possible to use a motor for feeding a recording medium in both recording and playback, and to use it as a small and lightweight system for recording and for playback. The purpose of the present invention is to provide a recording/playback system to which various functions can be added.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a circuit diagram and a block diagram of an embodiment of the present invention. Note that parts not directly related to the present invention are shown in block diagrams, and parts related to the present invention are shown in detailed circuit diagrams. In the figure, 100 is a recorder device, 200 is a player device, 101 is an imaging means for converting a subject image into an electrical signal, and 102 is a process circuit (first signal) for converting the electrical signal into a recording signal suitable for recording. 103 is a synchronizing signal generation circuit, 104 is a recording amplifier for amplifying the recording signal, 105 is a video head for recording and reproducing,
106 is a reproduction amplifier that amplifies the reproduction signal; 107
108 is a trigger key operated to control the start and end of recording; 109 is a feeding means that controls the rotational speed of a capstan motor Mo to a predetermined speed; A feeding control circuit 201 outputs a reproduction signal.
A conversion circuit (second signal processing circuit) for converting into an NTSC video signal, 202 a recording/playback control circuit, and 203 a
DC power supply (second power supply), T101 to T107 are recorder side terminals, T201 to T207 are player side terminals, SW1 to SW5 are switches, B is a battery (first power supply), and RL is a relay, respectively. Explain the operation.

During recording, subject light that has passed through a lens system (not shown) is captured by an imaging means (image pickup tube or solid-state imaging device) 10.
1 into an electrical signal. This electrical signal is converted into a signal for magnetic recording by gamma correction, shading correction, synchronization signal addition, FM modulation, color low-frequency conversion, etc. in a process circuit 102, and further amplified by a recording amplifier 101. The head 105 records on a magnetic tape (not shown). On the other hand, the magnetic tape is repeatedly fed and stopped in accordance with a trigger key operated by the photographer. Naturally, only the subject whose light is received by the imaging means while the tape is being fed is recorded.

During playback, terminals T101 to T107 are each set to T2.
Connected to 01 to T207, player side circuit 20
0 and the recorder side circuit 100 are connected. When a signal instructing playback is output from the recording/playback control circuit 202, the signal recorded on the magnetic tape is picked up from the video head 105, amplified by the playback amplifier 106, and then sent to the conversion circuit (FM demodulation, etc.) of the player 200. ) 201 and is demodulated into an NTSC video signal.

Next, the recording/reproducing switching of the recorder will be described with reference to FIG. As shown in Figure 2a, if the player is not connected, the input to terminal T102 is Vcc
The potential is the same as that, and the recording/replay switching becomes the recording mode. When the player device is connected as shown in Figure 2b,
According to the playback key on the player side, the transistor Q of the recording/playback control circuit is turned on, and the terminal T102 is turned on.
becomes the same potential as GND. This causes the recording/reproduction switching circuit 107 to enter the reproduction mode. Further, when the recording key on the player side is operated, the transistor Q of the recording/reproducing control circuit 107 is turned off, and the recording/reproducing switching circuit 1 is turned off.
07 becomes recording mode.

Next, the circuit diagram portion of FIG. 1 related to the present invention will be explained. RL is a relay, SW1 to SW3 are switches that switch between NO and NC sides depending on whether the relay is energized or de-energized, B is a battery, Mo is a capstan motor, and SW ₄ and SW ₅ are the buttons on the player's operation keys. This is a switch that switches to the REW side when "Rewind (reverse)" is pressed, and to the N side when not. SW ₆ is a switch that switches to the FF side when the player's "fast forward" operation key is pressed, and to the N side when not.
SW ₄ , SW ₅ , and SW ₆ constitute feeding speed switching means.

Now, assuming that the player device is not connected to the recorder device, relay RL is not energized, switches SW ₁ to _{SW 3} are both connected to the NC side, and the recorder device receives power from battery B. Moreover, as explained in FIG. 2 above, the recording mode is set. The capstan motor Mo is supplied with power by the feed control circuit 109 via switches SW ₂ and SW ₃ corresponding to the second switch of the present invention.
Speed controlled. The trigger key 108 controls feeding and pausing during recording.

Next, when the player device is connected to the recorder device, the relay RL of the recorder device is energized from the DC power supply 203 on the player side, and the switch SW1 is turned on.
~SW3 switches to the NO side. Power for the recorder is supplied from the AC power supply 203 of the player via the switch SW1 corresponding to the first switch of the present invention. When only one of the "record" and "play" operation keys on the player is pressed, the switches _SW4 to _SW6 are all connected to the N side.
Therefore, the capstan motor Mo moves from the feed control means of the recorder to SW ₆ (N) → SW ₄ (N) → SW ₂
(NO)→Mo→SW ₃ (NO)→SW ₅ (N)→GND speed control is performed according to each of recording and playback by energizing the path.

When only the "fast forward" operation key on the player device side is pressed, the switch SW ₆ is switched to the FF side. Therefore, from DC power supply SW ₆ (FF) → SW ₄
(N)→SW ₂ (NO)→Mo→SW ₃ (NO)→SW ₅
DC power is supplied to Mo through the (N)→GND path, and the speed is not controlled, causing Mo to rotate forward at high speed, allowing fast forwarding of the tape.

Further, when only the operation key "Rewind" is pressed, switches SW ₄ and SW ₅ are switched to the REW side.
Therefore, from DC power supply SW ₅ (REW) → SW ₃ (NO)
→Mo→SW ₂ (NO)→SW ₄ (REW)→GND DC power is supplied to the capstan motor Mo in the opposite direction, and the speed is not controlled, causing Mo to rotate at high speed in the reverse direction, causing the tape to wind. Can be returned.

If both the "playback" and "fast forward" operation keys are pressed, the recorder and player are in the playback mode and the tape is fast forwarded, realizing what is called a forward direction of high speed search.

Furthermore, if both the "play" and "rewind" operation keys are pressed, the recorder device and player device are in the playback mode and the tape is rewound.
The reverse direction of high-speed search is realized. Note that when the "Record" operation key on the player side is pressed, the "Fast forward" and "Rewind" operation keys are locked so that they cannot be pressed, and SW ₄ to _{SW 6} are disabled.
This prevents switching to the REW side or FF side.
This locking mechanism is generally well known to those skilled in the art and will not be described further.

As explained above, in the recording/playback system of the present invention, the recorder device includes an imaging device that converts subject light into an electrical signal, and a first signal that converts the electrical signal output from the imaging device into a signal form suitable for recording. a processing circuit, a video head for recording and reproducing the output signal of the first signal processing circuit on a recording medium, a motor for feeding the recording medium, and a motor for driving the recording medium at a predetermined speed. and a first power source, and further includes:
The player device includes a second signal processing circuit for outputting the signal reproduced by the video head as a video signal, and a feeding speed switching means for causing the motor to run the recording medium at a higher speed than the predetermined speed. and a second power source capable of supplying power to the motor, and further includes a first switch selectively connecting the motor to the feed control means and the feed speed switching means. , a second switch is provided for selecting the first power source and the second power source as a power source used in the feeding control means, and the first and second switches control the player device. When the player device is connected to the recorder device, the motor is connected to the feed speed switching means and the power source used by the feed control device is the second power source, and the player device is connected to the recorder device. When not in use, the motor is connected to the feed control means, and the power source used by the feed control means is the first power source.

With the above configuration, it is not necessary to provide a recording medium feeding motor and a recording/reproducing means in both the recorder device and the player device. Furthermore, since there is no need to provide an operation key to change the feeding speed on the recorder device, the operability of the recorder device is improved.Moreover, by connecting a player device, it is possible to increase the medium feeding speed, which is useful for high-speed searches, etc. Special playback is also possible. Furthermore, since there is no need to provide the recorder with a power supply and a circuit required only for high-speed feeding of the recording medium, the circuit of the recorder can be simplified.
This makes it possible to reduce the size and weight of the recorder device.

In this embodiment, a magnetic tape was used as the recording medium, but other recording media such as magnetic disks, optical disks, etc. can also be used.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a player device and a recorder device of this embodiment, and FIG. 2 is a detailed circuit diagram of a part of FIG. 1. In the figure, 100 is a recorder device, 101 is an imaging means, 105 is a video head, 107 is a recording/reproducing switching circuit, 108 is a trigger key, 109 is a feeding control circuit, 200 is a player device, 202 is a recording/reproducing control circuit, B represents a battery, Mo represents a capstan motor, and Q represents a transistor.

Claims (1)

[Claims] 1. Imaging means that converts object light into an electrical signal;
a first signal processing circuit that converts the electrical signal output from the imaging means into a signal form suitable for recording;
a video head for recording and reproducing the output signal of the signal processing circuit on a recording medium; a motor for feeding the recording medium; and a supply for causing the motor to run the recording medium only at a predetermined speed. a recorder device comprising a transmission control means and a first power supply; a second signal processing circuit for outputting a signal reproduced by the video head as a video signal; a player device comprising a feeding speed switching means for causing the motor to run at a higher speed than the feeding speed, and a second power source capable of supplying electric power to the motor; a first switch selectively connected to the feed control means and the feed speed switching means; and a second switch that selects the first power source and the second power source as power sources used in the feed control means. are provided, and the first and second switches connect the motor to the feed speed switching means and use it in the feed control means when the player device is connected to the recorder device. The power source is the second power source, and when the player device is not connected to the recorder device, the motor is connected to the feeding control means, and the power source used by the feeding control device is the first power source. A recording and playback system characterized by: