JPH0678194A - Image pickup device - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to commonly use imaging units that could not be commonly used because of different purposes and functions. [Arrangement] An image pickup unit and a control unit for controlling the image pickup unit are separated from each other, and the image pickup unit and the control unit are detachably attached to each other on a bus line. Departments can be used in common.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus, and more particularly to an image pickup apparatus for externally controlling an image pickup unit whose control section externally connected to a general-purpose bus is a controlled section.

[0002]

2. Description of the Related Art Conventionally, as an image pickup device using a charge-coupled device (hereinafter referred to as CCD), a TV camera device, an 8 mm video camera device for recording video on an 8 mm tape, and a surveillance camera capable of moving the camera position. Devices and the like are well known.

[0003]

However, in the above-mentioned conventional example, although each device has a similar image pickup unit using a CCD, it is completely different in function, and C
There is a problem that it is not possible to share and use the imaging unit other than the CD and its peripheral circuits as an imaging unit.

In other words, the 8 mm video device requires signal processing suitable for video recording on the 8 mm tape through the electromagnetic conversion system in the image pickup system, and the monitoring camera device is suitable for white balance correction for monitoring. Since each signal processing such as the above is required, the processing in the imaging system is different in each device so as to be suitable for each function. Therefore, it is difficult to reduce the cost and the design load by sharing the imaging unit among the devices.

[0005]

In the image pickup apparatus of the present invention, an image pickup unit which is a controlled section and a control section which controls the controlled section are detachably arranged in a bus line, and the control section is provided for each device. By configuring the control unit according to the function of, for example, if the control unit is configured to have the 8 mm deck function, it becomes an 8 mm video camera by connecting the imaging unit that is the controlled unit, and the control unit is the surveillance camera. If the camera is configured to have a pan head function, it becomes a surveillance camera with a pan head by connecting to the imaging unit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the main configuration of an image pickup apparatus showing a first embodiment of the present invention. Below, Figure 1
The configuration and operation of will be described.

In the figure, reference numeral 1 is a lens unit having an optical system for forming a subject image, an aperture drive as an exposure control means, a zoom function, etc., 2 is a shutter, and 3 is a shutter 2 for driving the shutter 2. Driver circuit, 4
Is a sensor as an image pickup means such as a CCD. Reference numeral 5 denotes a driver that drives the sensor 4 and the signal processing circuit 6, and performs synchronization control and the like. 7 is Y output from the signal processing circuit 6.
This is a known encoder circuit for generating Y and C (color signal) from (luminance signal), RY, BY (color difference signal), and the Y and C signals output from the encoder circuit 7 are the switch 8 The selected video signal is converted into a composite video signal by a known decoder circuit 9 and supplied to the output terminal 10. The Y and C signal lines at the output end of the switch 8 (the input end of the decoder circuit 9) and the composite video signal output from the decoder circuit 9 are directly connected to a bus line (not shown) on the imaging unit side.

Reference numeral 15 is a PIO (parallel I / O) for transmitting a control signal S2 for the control unit 101 to control the image pickup unit 100 to the image pickup unit 100, and is directly connected to the control unit 101 by a bus line. .

The structure of the control unit 101 is as follows. 1
Reference numeral 1 is a CPU that controls the image pickup unit 100, and 12 is a CPU
A ROM that stores programs and data that control the operation of 11; 13 is a RAM that stores data and the like as a working memory of the CPU 11; 14 is an S for the CPU 11 to input and output serial data from a remote controller (not shown) or the like.
It is IO (serial I / O). Further, S1 is a control unit side bus, and in the present embodiment, the address bus and the data bus are composed of 32 bits, and in addition, a power supply, a memory control signal, a DMA control signal, an interrupt control signal to the CPU, a system clock, etc. Each control signal line is included, and by connecting the image pickup unit 100 and the control unit 101 by a connection unit (not shown), the image pickup unit 100 and the control unit 101 are directly connected to an image pickup unit side bus (not shown), and the CPU 11 can control the image pickup unit 100. It is possible to further reduce the size by configuring the control unit 101 with a CPU card including a one-chip microcomputer.

FIG. 2 is a block diagram showing the main configuration of an image pickup apparatus showing a second embodiment of the present invention. The configuration and operation of FIG. 2 will be described below.

Reference numerals 100 and 10 have the same structure as the image pickup section and the output terminal of the composite video signal shown in the first embodiment. Reference numeral 102 is a control unit in the second embodiment, which has the following configuration.

Reference numeral 20 denotes a luminance signal processing circuit for performing various signal processing such as noise removal on Y (luminance signal) supplied from the image pickup unit 100 via a bus line, and 21 denotes C similarly supplied from the image pickup unit 100. This is a color signal low frequency conversion circuit that performs low frequency conversion (scan conversion) on (color signal). The Y signal output from the luminance signal processing circuit 20 and the C signal output from the color signal low frequency conversion circuit 21 are frequency-multiplexed in the signal multiplexing circuit 22, and F
After being M-modulated, it is recorded on the magnetic tape in the magnetic tape recording / reproducing section 24 via the recording amplifier 23. When the signal recorded on the magnetic tape is reproduced by the magnetic tape recording / reproducing unit 24, the signal read by the magnetic head in the magnetic tape recording / reproducing unit 24 is supplied to the preamplifier 2
After performing FM demodulation in LPF / HPF (low pass filter / high pass filter) 28 via 7, a low pass filter output is taken out as a C signal and a high pass filter output is taken out as a Y signal. The Y signal extracted by the LPF / HPF 28 is subjected to various kinds of processing by the luminance signal processing circuit 29 and input to the switch 31. The C signal extracted by the LPF / HPF 28 is also scan converted by the color signal frequency conversion circuit 30 to 3.58 MHz which is the band of a normal video color signal and input to the switch 32.

When the magnetic tape recording / reproducing section 24 is reproducing, the switch 3 is controlled by the control circuit 26.
Since 1 and 32 are turned on, the luminance signal processing circuit 29
And Y and C output from the color signal frequency conversion circuit 30.
The signal is supplied to the image pickup unit 100, and at this time, the switch 8 is turned off by the control signal from the control circuit 26 supplied from the bus line to the image pickup unit 100, and the control unit 102 is turned off.
The Y and C signals supplied from the image pickup unit 100 to the image pickup unit 100 are converted into a composite video signal by the decoder 9 and output from the output terminal 10. Further, the composite video signal output from the decoder 9 is supplied to the control unit 102 connected by a bus line, and EVF (Electric) is supplied.
By inputting it to the View Finder 33, the reproduced image of the magnetic tape can be confirmed by the viewfinder. Further, when recording is performed on the magnetic tape, the switch 8 is kept in the ON state by the control of the control circuit 26, whereby the image pickup unit 100 supplies the control unit 102 with the Y and C signals. At this time, the switches 31 and 32 are kept in the off state, and the respective units 20 to 24 for processing magnetic recording function and the magnetic tape recording / reproducing unit 24 performs recording. Further, since the decoder 9 supplies the image data formed by the sensor 4 of the image pickup unit 100 to the EVF 33, the image being picked up can be confirmed in the viewfinder. The signal processing circuit 6 causes the driver 5 inside the image pickup unit 100 to perform signal processing suitable for magnetic recording conversion processing in response to a control signal from the control circuit 26.
Is configured to change the drive.

The control circuit 2 controls the recording / reproducing process in the magnetic tape recording / reproducing unit and the control of the display / operation unit (not shown).
6 is performed.

FIG. 3 is a block diagram showing the main structure of an image pickup apparatus showing a third embodiment of the present invention. The configuration and operation of FIG. 3 will be described below.

Reference numerals 100 and 10 denote an image pickup section and an output terminal having the same construction as that shown in the first embodiment. Again 1
Reference numeral 03 denotes a control unit in the third embodiment, the configuration of which is a tripod head unit including a mechanical unit for moving the image pickup unit 100 vertically and horizontally, which has various sensors, and position information and the like by the control circuit 42. Readable. The platform driving unit 41 is a power source that drives the platform unit 40 under the control of the control circuit 42. The control circuit 42 can perform pan head drive control and zoom, AF, and other controls in the image pickup unit 100 directly connected by a bus line in conjunction with signals from a remote controller (not shown) or an operation panel. Therefore, it is used as a video conference camera unit.

Further, the control program stored in the control circuit 42 is used for controlling the surveillance camera, and the motion is detected in the image (specifically, it is detected by using the difference between the Y signal frames) and the motion thereof. It can be used as a surveillance camera unit if it is configured to automatically perform cloud movement drive and zoom control linked with the.

[0019]

As described above, the image pickup unit as the controlled unit and the control unit for controlling the controlled unit are detachably attached to the bus line, and the control unit is adapted to the function of each device. With this configuration, if the control unit is configured to have an 8 mm deck function, for example, an imaging unit, which is a controlled unit, is connected to become an 8 mm video camera, and the control unit is a cloud for surveillance cameras. If it is configured to have a platform function, it becomes a surveillance camera with a pan head by connecting to an imaging unit. Therefore, it is possible to commonly use the imaging unit that could not be commonly used because the function as a conventional product is different, and it is possible to use it as a device having a different function only by replacing the control unit. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a third embodiment of the present invention.

[Explanation of symbols]

 1 Lens Unit 2 Shutter 3 Driver Circuit 4 Sensor 5 Driver Circuit 6 Signal Processing Circuit 7 Encoder 8 Switch 9 Decoder 10 Output Terminal 11 CPU 12 ROM 13 RAM 14 SIO 15 PIO 100 Imaging Unit 101 Control Unit

Claims (1)

[Claims] 1. In a camera device having an image pickup unit for converting an optical image into image information composed of an electric signal, the image pickup unit and a control unit for controlling the image pickup unit are separated, and the image pickup unit and the control unit are separated from each other. An imaging device, which is configured to be detachably attached to a bus line.