JPH03154573A - Reproducing device for electronic still camera - Google Patents

Abstract

PURPOSE:To prevent malfunction by inhibiting that a signal inputted from a remote control input terminal is fetched to a control section when the camera is operated on a battery. CONSTITUTION:A control section 128 fetches a detected output of a feeding state detection means 122 detecting from which is used to operate a camera a battery or an AC adaptor and when the power feeding from the battery is discriminated based on the detected output, the fetch of the signal inputted from a remote control input terminal 126 is inhibited. Thus, when a reproduction adaptor being a reproducing device is used as a single body, malfunction due to external noise or the like being to supplied the remote control input terminal 126 is prevented.

Description

[Detailed description of the invention] Technical field The present invention relates to a playback device for an electronic still camera.

BACKGROUND ART As is well known, an electronic still camera photographs a subject using an imaging means and records the photographed image on a magnetic disk or the like. The recorded image is reproduced by a reproduction device.

A playback adapter is used which is connected to such an electronic still camera, plays back images taken and recorded by the camera, and outputs a playback signal to a monitor. Such an adapter is usually connected to a camera and also to a monitor device, reads an image signal photographed and recorded by the camera, converts it into a video signal, performs necessary processing, and outputs it to the monitor device.

The above-mentioned playback adapter can be connected to a monitor device to visually play back recorded images on the monitor device, or can be connected only to the camera to erase recorded images or advance tracks without being connected to a monitor device. Also used to do. That is, erasing the recording of an image of a specific frame or specifying an image frame to be read from the camera to the reproduction adapter and reproduced can be performed without checking the image on the monitor device.

In addition, when operating the playback adapter by remote control, or when it is necessary to change the format of the video signal obtained by signal processing with the playback adapter, a control unit with a built-in signal processing circuit etc. is connected to the playback adapter. It is now possible to do so.

The bottom of the case of the playback adapter is provided with input/output terminals including a remote control input terminal into which remote control operation signals are input, and when the playback adapter is remotely operated by the remote control operation means, playback is performed via the input/output terminals. The adapter and the control unit are configured to be connected via a bin. Therefore, if the 11f playback adapter is used alone and connected to an electronic still camera, etc. without connecting the control unit, the remote control input terminal provided on the playback adapter will be exposed, and external noise will be generated. There has been a problem that there is a risk of malfunction due to contamination through the remote control input terminal.Purpose of the present invention solves such problems of the prior art, and allows the playback adapter, which is a playback device, to be used alone. An object of the present invention is to provide a playback device for an electronic still camera that is capable of preventing malfunctions caused by external noise or the like entering a remote control input terminal.

DISCLOSURE OF THE INVENTION According to the present invention, a playback device that is connected to an electronic still camera and plays back images taken by the electronic still camera and recorded on a recording medium has an input/output terminal including a remote control input terminal to which a remote control operation signal is input. is configured to be connectable via the input/output terminal to a control device that outputs a remote control operation signal that instructs an operation corresponding to the operation of the remote control operation means when the remote control operation means is operated, and is connected to either a battery or an AC adapter. power supply state detection means configured to be supplied with power by a battery or an AC adapter;
The apparatus includes a determination means that receives the detection output of the power supply state detection means, and prohibits the reception of the signal input from the remote control input terminal when it is determined that power is being supplied from the battery based on the detection output.

DESCRIPTION OF EMBODIMENTS Next, embodiments of an electronic still camera playback apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the external configuration of a playback adapter, control unit, battery adapter, and AC adapter that constitute a playback system for an electronic still camera to which the present invention is applied, and FIG. 2 shows a schematic structure of this playback system. It is shown.

As shown in these figures, the system uses a regeneration adapter 10. As shown in FIG. 2, the playback adapter 10 is connected to a multiplex still camera 12, inputs an image signal taken by the electronic still camera 12 and recorded on a recording medium such as a floppy disk through the connection part, and reproduces the image signal. After performing the necessary processing, the video output terminal 38
It outputs a video signal to the control unit 30 through the contact bin 32, and outputs a playback signal to the control unit 30 via the contact bin 32. As shown in FIG. 1, the playback adapter 10 is provided with a predetermined number of buttons 14 for the operator to input instructions. These buttons 14 are used to input instructions such as playback, frame advance, and deletion. When these buttons 14 are used, for example, the image of a predetermined frame of the camera 12 is input to the playback adapter lO by the frame advance and playback buttons, and after predetermined processing is performed, the image is sent to the video output terminal 3.
At the same time, the playback signal is output to the control unit 30 connected to the playback adapter 10.

A bottom contact 18 that functions as an input/output terminal including a remote control input terminal is provided on the bottom surface of the playback adapter 10, and a contact point 18 that functions as an input/output terminal including a remote control output terminal is provided protruding from the top surface of the adjacent control unit 30. It is connected to the bottle 32 and used for transmitting and receiving signals between the reproducing adapter IO and the control unit 30. In this embodiment, twelve bottom contacts 18 are provided.

In addition, when using a battery as a power source for the regeneration adapter IO, the battery 20 is regenerated by contacting the top surface contact 22 provided on the top surface of the regeneration adapter IO with a terminal 8i (not shown) provided on the bottom surface of the battery 20. By placing the playback adapter 10 on the adapter 10, power is supplied from the battery to the playback adapter 10. Furthermore, a video output terminal 18 is provided on the side surface of the playback adapter 10 for connection to a monitor device 50 when the playback adapter IO is used alone.

Twelve contact bins 32 are provided on the top surface of the control unit 30. The control unit 30 is connected to the playback adapter 10 by these contact bins 32.

Furthermore, four L contact points 34 are provided on the top surface of the control unit 30, and four bottom contact points (not shown) are provided at positions on the bottom surface of the control unit 30 corresponding to the top surface contacts 34. ing. This top contact 3
4 and the bottom contact provided at the corresponding position are electrically connected.

Further, there are four top contacts 44 on the top surface of the AC adapter 40, and four bottom contacts (not shown) are also provided on the bottom surface of the playback adapter 10 at positions opposite to the top contacts 34 of the control unit 30. There is.

An infrared light receiving section 38 for remote control operation is provided on the side surface of the control unit 30. When the operator operates a remote control light emitting means (not shown), the infrared light emitted is received by the light receiving section 36, and is reproduced. Instructions such as frame advance are input. When an instruction is input by remote control operation, the button 14 provided on the playback adapter 10 is not used.

A video output terminal 38 for connection to a monitor device 50 is also provided on the side surface of the control unit 30. Control unit 3o is video output terminal 3
8 is connected to the monitor device 50, and the signal processed by the control unit 30 is sent to the video output terminal 38.
The signal is output to the monitor device 50 through.

The AC adapter 40 is a unit that converts a commercial power source into a predetermined DC voltage and outputs it. By placing the control unit 30 on the top surface of this AC adapter 40 and further placing the playback adapter 10 on the top surface of the control unit 30, the top surface contact 44 of the AC adapter 40, the top surface contact 34 of the control unit 30, and the playback adapter l
The bottom surface contact (not shown) of O is electrically connected, and as a result, the control unit 30 is connected to the AC adapter 40.
And power is supplied to the reproducing adapter 10.

In this way, the playback adapter 10 connects the battery 20 or
It is configured to be powered by either one of the C adapters 40.

Note that when the playback adapter 10 is driven by remote control operation, the control unit 30 is always connected to the playback adapter io, and the AC adapter 4o is connected to the control unit 30, as shown in FIG. is configured not to be used. This is because playback systems for electronic still cameras are normally designed on the assumption that they will be used indoors.

Therefore, as is clear from the above configuration, the AC adapter 4
When the battery 20 is attached to the playback adapter 0 without using the playback adapter IO and the control unit 3o, and when the playback adapter IO is used in connection with an electronic still camera 12, etc., it functions as an input/output terminal including a remote control input terminal. The bottom contact 16 will be exposed.

In such a case, the present invention is configured to prevent the playback adapter 10 from malfunctioning even if noise or the like enters the contact that functions as a remote control input terminal (hereinafter simply referred to as a remote control input terminal) among the bottom contacts 16. ing.

The configuration will be explained below. FIG. 3 shows the electrical configuration of one embodiment of the playback adapter IO.

As shown in the figure, the playback adapter 10 has a camera terminal 102 into which a signal from an electronic still camera 12 is input. From the camera terminal 102, an image signal of a still image taken by the ttt child snapshot still camera 12 is input, and is sent to the non-reproduction system processing circuit 1 (14) and the reproduction system processing circuit 10B.The reproduction system processing circuit 1013 , the output thereof is output to the video output terminal 108, a monitor device 50 is connected to the video width terminal 108, and the monitor device 50 performs necessary processing when visual reproduction is performed, for example, monitors the image signal input from the camera 12. A non-reproduction processing circuit 104 that performs processing of converting into a video signal for reproduction,
To instruct the camera to perform operations other than processing performed by the reproduction system processing circuit 10B, such as demodulating the DPSK signal reproduced by the camera 12, erasing images recorded on a specific track, erasing all tracks, and advancing tracks. Therefore, the non-reproduction processing circuit 104 needs to operate regardless of whether or not the monitor device 50 is connected to the video output terminal on the same day.
need only operate when the monitor device 5° is connected to the video output terminal 18, which is the case in this embodiment.

The video output terminal 18 is a pin jack with a switch connected to a monitor. Video output terminal 18 is connected to monitor device 5
When connected to 0, the image signal from the reproduction system processing circuit 10B is sent to the monitor device 50. When the video output terminal 18 is connected to the monitor device 50, the switch of the video output terminal 18 is turned on, and its output is sent to the control unit 128.

The control section 128 is a control section that controls each greasing section of the regenerated attacher 10, and is advantageously configured by, for example, a one-chip microcomputer. The control unit 128 also controls the video output terminal 1
8 is detected at predetermined time intervals to detect whether the video output terminal 18 is connected to the monitor device 50 or not.

The reproduction adapter 10 also has a battery terminal 22 to which the battery 20 is connected and an AC adapter terminal 120 to which the AC adapter 40 is connected. By connecting the battery 20 or the AC adapter 40 to any one of these terminals, the necessary power is supplied to the playback adapter IO. The battery terminal 22 is the top contact 22 of the reproduction adapter 10 described above, and the AC adapter terminal 120 is the bottom contact of the reproduction adapter 10.

The battery terminal 22 and the AC adapter terminal 120 are
Two input terminals 118a and t16b of relay circuit 118
are connected to each. The relay circuit 116 is a selection circuit that selects either the battery terminal 22 or the ACC adapter terminal 120. Power output from relay circuit 116 is supplied to regulators 112 and 114. The regulator 112 supplies predetermined power to the non-reproduction processing circuit 104 and the reproduction processing circuit 106.

The output of the regulator 112 is sent to the non-regenerative processing circuit 104.
and is also sent to switch +10. The switch 110 is controlled by a control signal from the control unit 12B, and is connected only when the video output terminal 18 is connected to a monitor, thereby directing power from the regulator 112 to the reproduction system processing circuit 108 when the monitor device 50 is connected. send. For example, a transistor is advantageously used as switch 110. On the other hand, the regulator 114
A predetermined power is supplied to 8.

The input from the AC adapter terminal] 20 is also input to the power supply detector 122. When power is supplied from the battery terminal 22 or the AC adapter terminal 120, the power supply detector 122 detects which source the power is being supplied from, that is, whether the battery or the AC adapter is being used as the power source. . The detection output of the power supply detector 122 is sent to the control section 128.

The control unit 128 is further connected to a power switch 124 and a remote control input terminal 12B. The power switch 124 is operated by the operator, and the regeneration adapter 10
Turn on and off the power supplied to the Remote control input terminal 1
As mentioned above, 2B is one of the bottom contacts of the playback adapter 10, and this remote control input terminal 12Ei receives a signal based on the optical signal input from the infrared receiver 36 provided on the side surface of the control unit 30. The converted electrical signal is input.

Next, the operation of the playback adapter 10 will be explained.

/The battery 20 is connected to the terminal 22, or the AC
When the AC adapter 40 is connected to the adapter terminal 120, the detection output of the power supply detector 122 is sent to the control unit 128. For example, this detection output will be at a noise level when the battery 20 is connected to the battery terminal 22, and will be at a low level when the AC adapter 40 is connected to the AC adapter terminal 120. When the input from the power supply detector 122 is at a high level, the control unit 128 determines that the device is in a battery-powered state. In the relay circuit liB, when the AC adapter 40 is connected to the AC adapter terminal 120, the contact piece is connected to the terminal 118b side, and the AC
If adapter 40 is not connected, terminal 116
It is connected to the a side and power is supplied.

When the power switch 124 is turned on by the operator,
The regulator 112 is driven, and the non-regenerative processing circuit 10
Power is supplied to 4.

On the other hand, the control unit 128 detects the human input signal from the video output terminal 18 at regular intervals, and determines that the monitor device 50 is connected to the video output terminal on the 1st when the input signal is at a high level. If the input signal is at a low level, it is determined that the monitor device 50 is not connected to the video output terminal 18.

When the monitor device 50 is connected to the video output terminal 18, the control unit 128 turns on the switch +10,
The power from the regulator 112 is regenerated by the processing circuit lO6.
be supplied to If the monitor device 50 is not connected to the video output terminal on the 1st day, the control unit 128
10 is turned off, and power from the regulator 112 is not supplied to the reproduction system processing circuit 106. In this way, when the monitor device 50 is not connected, the reproduction system processing circuit 106 does not need to operate, so the reproduction system processing circuit 108
does not supply power.

When the output from the power supply detector 122 is at a low level, that is, when it is driven by the AC adapter, the control unit 12B controls the output from the video output terminal 18 regardless of the output from the video output terminal 18.
That is, regardless of whether the monitor device 50 is connected or not, the switch 110 is turned on to supply power to the reproduction system processing circuit 106. In this case, since power is supplied by the AC adapter 40, there is less need to limit the power supplied to the reproduction system processing circuit 10B as in the case of battery drive.

Further, when the control unit 128 determines that the playback adapter 10 is being powered by the battery 20 based on the detection output of the power supply detector 122 (in this case, the playback adapter l
The bottom contact 16 of O is exposed. ), the control unit 12
8 prohibits the reception of signals input from the remote control input terminal 126. Therefore, even if noise etc. enters through the remote control input terminal, it will cause the control unit 1
28 control operations are not affected.

On the other hand, if the control unit 128 determines that the playback adapter lO is being powered by the AC adapter 40, that is, the playback adapter lO is connected to the control unit 30 and the AC adapter 40.
When the C adapter 40 is connected and the bottom contact 16 of the playback adapter IO is not exposed, a signal (remote control operation signal) input from the remote control input terminal 126 is taken into the control unit 128. This is because when power is being supplied from the AC adapter 40, signals other than the remote control operation signal (including noise) are not directly input from the remote control input terminal 12B.

Note that in this embodiment, when the playback adapter IO is powered by the battery, the control function of the control unit 128, that is, the software, prohibits the capture of signals input from the remote control input terminal 126. The present invention is not limited to this, and may be realized by providing a circuit having a function of masking the remote control input signal using the detection output of the power supply detector 122, for example.

Effects According to the present invention, when the playback device is powered by a battery, the signal input from the remote control input terminal is prohibited from being taken into the control unit. Even when the present invention is used alone, it is possible to realize a playback device for an electronic still camera that prevents malfunctions caused by external noise entering the remote control input terminal.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external configuration of each unit constituting a playback system for an electronic still camera to which the present invention is applied. FIG. 2 is a schematic configuration diagram showing an embodiment of a playback system for an electronic still camera to which the present invention is applied, and FIG. 3 is a block diagram showing the electrical configuration of the playback adapter shown in FIG. 1. Explanation of the symbols of parts 10, .., reproduction adapter 20°, battery 30°, control unit 36. 40゜22 26 28 Remote control light receiving section AC adapter Power supply Electrometer Remote control input terminal control section

Claims (1)

[Scope of Claims] An electronic still camera playback device that is connected to an electronic still camera and plays back images taken by the electronic still camera and recorded on a recording medium, the device comprising: a remote control to which a remote control operation signal is input; It has an input/output terminal including an input terminal, and is configured to be connectable via the input/output terminal to a control device that outputs a remote control operation signal that instructs an operation corresponding to the operation when the remote control operation means is operated, and configured to be powered by either a battery or an AC adapter, and a power supply state detection means for detecting whether power is being supplied by the battery or the AC adapter, and a detection output of the power supply state detection means, A playback device for an electronic still camera, characterized in that the playback device for an electronic still camera has a determining means for prohibiting the reception of a signal input from the remote control input terminal when it is determined that power is being supplied from the battery based on the detection output.