JPH03210885A - Controller for video camera - Google Patents

Abstract

PURPOSE:To set an optimum operating state of a video camera even when an external controller is not connected by storing an external control signal to a memory provided to a video camera while the external controller is mounted and controlling a signal processing circuit while the external controller is disconnected. CONSTITUTION:When an RM3 or a CCU 4 is connected to a terminal cx, a moving contact of a switch 27 is connected to a fixed contact of a position (r) or (c) and a signal is fed to a signal processing circuit 13 based on the operation of the RM3 or the CCU 4. A proper external control signal is written in a relevant memory 25 or 26 and stored therein. When a video camera 10 is used integratingly with a VTR 1p, the RM3 or the CCU 4 is not connected to the terminal cx and the proper external control signal stored in the memory 25 or 26 as above is selected and fed to the signal processing circuit 13 and proper signal processing suitable for the intention of design is implemented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for a video camera suitable for business use.

[Summary of the Invention] The present invention provides a video camera control device equipped with an external control device that supplies control signals to a signal processing circuit of the video camera. After storing the control signals, the signal processing circuit is controlled based on the external control signals selectively read out from the memory with the external control device disconnected, even when the external control device is not connected. , it is possible to easily set the optimal operating state of the video camera, and to produce video according to the user's intention.

[Prior Art] Conventionally, as shown in FIG. 2A, a professional video camera 10) has been integrally combined with a VTR (IP) and used as a portable type, or as shown in FIG. As shown, it is connected to a stationary VTR (10) via a suitable adapter (2v) and used as a standalone unit.

In this case, a simple remote control unit (RM) (3) can be connected.

In addition, in studios, etc., as shown in Figure C, full-fledged camera control units can be connected via adapters.
(CCU) (4) is connected. In this case, the video signal is taken out via CCU (4).

A conventional video camera (10) is configured as shown in FIG. 3, for example.

In FIG. 3, a video signal output from an image sensor (11) is passed through an amplifier (12) to a signal processing circuit (13).
) and undergo appropriate processing. This processing circuit (
The output signal of 13) is led to the output terminal OUT, and is also sent to the viewfinder (15) via the adder (14).
is supplied to

The signal processing items in the processing circuit (13) include, for example, detail (high-range luminance signal component) level, gamma correction value,
(ma) +Jx coefficient value (color reproduction correction), etc.

(21) is the system control circuit (microcomputer)
(hereinafter abbreviated as CPU), (22) is a memory (RAM) for storing preset control data, and Memo+J (22) is connected to one fixed contact l of the switch (23). 23) is connected to the other fixed contact e through the control signal input terminal Cx.
Any of the CCUs (4) is connected and the switch (23)
The output of is supplied to the signal processing circuit (13). Further, an external control signal from the terminal Cx is supplied to the CPU (21), and the output of the CPU (21) is supplied to the switch (23) as a switching control signal, and the character signal generation circuit (24) The character signal from the generating circuit (24) is supplied to the adder (14).

When RM (3) or CCU (4) is connected to terminal Cx, CPU (21) detects an external control signal from terminal Cx and outputs a detection signal. This results in
Contrary to the illustration, the movable contact of the switch (23) is connected to the fixed contact on the e side, and in the processing circuit (13), the RM (
3) or CCU (4), appropriate signal processing is performed according to the production intention.

In addition, when the video camera (10) is used integrally with a VTR (IP), the RM (3) or CCU (
4) is not connected to terminal Cx, so CPU (21)
No detection signal can be obtained from the For this reason, the switch (2
The movable contact 3) is connected to the fixed contact on one side as shown in the figure, and the preset control data stored in the memo IJ (22) is read out, and the processing circuit (13) reads this control data. Based on this, standard predetermined signal processing is performed.

Note that in the character signal generation circuit (24), the CPU (21
), an appropriate character signal is generated depending on the presence or absence of a detection signal from the
Or characters corresponding to internal control signals are displayed.

[Problems to be Solved by the Invention] However, when a conventional video camera is used without an external control device, as described above, signal processing is performed based on standard preset control data, so a uniform image cannot be obtained. There is a problem in that it is not always possible to set an appropriate operation (signal processing) state depending on the shooting environment or production intention.

In view of the above, an object of the present invention is to provide a video camera control device that can easily set the optimal operating state of a video camera and produce video according to the user's intention even when no external control equipment is connected. It is located in a place that provides.

[Means for Solving the Problems] The present invention provides a video camera (10) having a signal processing circuit (13) that processes a video signal output from an image sensor (11), and a video camera (10) that provides a control signal to the signal processing circuit. In a video camera control device comprising external control devices (3) and (4) to be supplied, a storage means (25) for storing control signals;
(26) and selective reading means (21), (28) for selectively reading out the control signals stored in this storage means.
is provided in the video camera, and the control signal is stored in the storage means with an external control device connected to the video camera, and then selected and read out from the storage device with the external control device disconnected from the video camera. This is a control device for a video camera that controls a signal processing circuit based on a control signal generated by a video camera.

[Function] According to this configuration, even when no external control device is connected, the optimal operating state of the video camera can be easily set, and a video according to the intention can be produced.

[Embodiment] An embodiment of a video camera control device according to the present invention will be described below with reference to FIG.

FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, parts corresponding to those in FIG. 3 are given the same reference numerals and redundant explanation will be omitted.

In the embodiment of FIG. 1, RM (3) and CCU (
4) Memo IJ (RAM) that stores external control signals from
(25) and (26) are newly provided. Both notes! J
(25).

(26) is supplied with an external control signal in the form of serial data via the terminal Cx and the switch (27), and the movable contact of the switch (27) is controlled by the output of the CPU (21). Connected to the r-side or C-side fixed contact.

Preset control signals, RM control signals and C read out from each memo IJ (22), (25) and (26)
The CU control signal is supplied to fixed contacts p, r and C of the switch (28), respectively, and the movable contact of the switch (28) is connected to one fixed contact 1 of the switch (23).

In addition, the movable contact of the switch (28) has a CPU (2
1), a switching control signal corresponding to a key operation is commonly supplied to the character signal generation circuit (24).

The rest of the configuration is the same as that shown in FIG. 3 above.

The operation of the embodiment of FIG. 1 is as follows.

When RM (3) or CCU (4) is connected to terminal CX, CPU (21) detects an external control signal from terminal Cx and switches the movable contact of switch (23) to e.
It connects to the side fixed contact, detects the device identification signal in the external control signal, and outputs the external device detection signal.

As a result, the movable contact of the switch (27) is connected to the fixed contact on the r side or C side, and RM (3) or C
A memo to which appropriate external control signals are supplied to the signal processing circuit (13) based on the operation of the CU (4)! J
(25) or (26) and stored.

When the video camera (10) is used integrally with the VTR (IP), the RM (3) or CCU (4) is not connected to terminal Cx, and the switch (23) is connected as shown. Ru.

In this case, by the user operating key K, the CP
Via U (21), the movable contact of the switch (28) is switched and, in addition to the previous preset control signal of Memo 'J (22), Memo U (25) or (26) is activated as described above. Appropriate stored external control signals can be selected and supplied to the signal processing circuit (13) to perform appropriate signal processing according to the production intention.

In addition, in response to switching of the switch (28), the character signal generation circuit (24) generates an appropriate character signal, and the screen of the finder (15) displays the memories (22), (25).
Or, characters corresponding to each control signal (26) are displayed.

Furthermore, as shown by the broken line in Figure 1, the IC card data memo! If J (29) is prepared and placed, for example, the optimal setting state for each cameraman or director can be stored in an IC card, and any video camera can be set to the optimal state using this IC card.

[Effects of the Invention] As detailed above, according to the present invention, after an external control signal is stored in the memory provided in the video camera with the external control device connected, the external control signal is stored in the memory provided in the video camera with the external control device disconnected. Since the signal processing circuit is controlled based on external control signals selectively read out from memory, the optimal operating state of the video camera can be easily set even when no external control device is connected. As a result, a video camera control device capable of producing video according to the user's intention can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a video camera control device according to the present invention, FIG. 2 is a block diagram for explaining the invention, and FIG. 3 is a configuration of a conventional video camera control device. FIG. 2 is a block diagram illustrating an example. (3) is a simple remote control unit) (RM), (4)
is a camera control unit (CCU), (10) is a video camera, (21) is a microcomputer, (22)
, (25), (26) are memo IJ (RAM)
, (28) are changeover switches (selective reading means). Agent Hide Matsukuma Mori 0 TP This is a sty camera f-officer 1 Conventional example Fig. 3

Claims (1)

[Scope of Claims] A control device for a video camera, comprising: a video camera having a signal processing circuit that processes a video signal output from an image sensor; and an external control device that supplies a control signal to the signal processing circuit. , the video camera is provided with a storage means for storing the control signal and a selection readout means for selectively reading out the control signal stored in the storage means, and the external control device is connected to the video camera; After storing the control signal in the storage means, the signal processing circuit is controlled based on the control signal selected and read from the storage means with the external control device disconnected from the video camera. A video camera control device characterized in that: