JPH0591382A - Remote driving type solid-state image pickup device - Google Patents

Abstract

PURPOSE:To provide the remote driving type solid-state image pickup device without causing an output signal line and a reference synchronizing signal line for signal processing housed in a cable connecting an image pickup head part and an image pickup control part to generate a rapid change in delay characteristic due to the change of cable length and shape or the like. CONSTITUTION:In the structure of a cable 300 connecting an image pickup head part and an image pickup control unit, an output signal line 330 of a photoelectric conversion output signal sending the output of a solid-state image pickup element in an image pickup head part to an image pickup control unit and a reference synchronizing signal line 340 for signal processing are housed in a shield line 350 in combination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid-state image pickup device, and more particularly, to a remote drive type solid-state image pickup device comprising an image pickup head portion and an image pickup control unit arranged separately from the image pickup head portion.

[0002]

2. Description of the Related Art A CCD (charge-coupled device) or the like is arranged as a solid-state image pickup device, and an image pickup control unit and an image pickup control unit are connected to each other by a cable so as to be remotely separated. Various remote drive type solid-state imaging devices have been developed which are configured to transfer the converted output signal to the imaging control unit through this cable and read the incident optical image by the imaging signal processing circuit in the imaging control unit.

A remote drive type solid-state image pickup device of this type is, for example, as shown in FIG. 3, an image pickup head unit 100 having a solid-state image pickup element 103, and an image pickup control unit arranged remotely from the image pickup head unit 100. A cable 300 with a multi-core structure that connects both of them and that transmits and receives electrical signals in both directions is provided between the cable and the cable 200. In consideration of mobility and mobility, the cable 300 is removable Connected to.

A driving voltage is supplied from a voltage source (not shown) of the image pickup control unit 200 by a signal line 310, and H (horizontal).
System, V (vertical) system drive synchronization signals are transmitted through signal lines 321, 32, respectively.
It is sent to the solid-state image pickup element 103 in the image pickup head section by means of 2.

Further, the solid-state image pickup device 10 is formed by the incident optical image.
The return signals of the H-system and V-system drive synchronization signals are output signal lines 330 as the photoelectric conversion output output from the reference numeral 3 and the reference synchronization pulse for signal processing synchronized with this photoelectric conversion output signal, respectively.
And the signal processing reference synchronizing signal line 340 to be sent to the imaging signal processing circuit 202. The imaging signal processing circuit 202 is a logic unit including a noise reduction circuit, a synchronous detection circuit, and a signal processing circuit.

[0006]

However, in the above-mentioned remote drive type solid-state image pickup device, the image pickup head is downsized,
The drive voltage signal line sent from the image pickup control unit to the solid-state image pickup device in the image pickup head using a cable is also output signal line 330 of photoelectric conversion output output from the solid-state image pickup device in the image pickup head part by the incident optical image. The signal processing reference synchronizing signal line 340 for transmitting the processing reference synchronizing pulse is also housed in the same cable.

Therefore, when the length of the cable changes, the length of each signal line and the shape inside the cable also change, so that the delay characteristic of the signal changes.

Therefore, according to the present invention, the output signal line and the signal processing reference synchronizing signal line housed in a cable connecting the image pickup head section and the image pickup control unit in such a conventional remote drive type solid-state image pickup device, An object of the present invention is to provide a remote drive type solid-state imaging device having a structure that does not change the delay characteristics due to changes in the length and shape of the cable.

[0009]

In order to achieve the above object, the present invention is directed to an image pickup head section having a solid-state image pickup element, an image pickup control unit arranged remotely from the image pickup head section, and an image pickup head. A cable for connecting the image pickup section and the image pickup control unit, sending a drive signal from the image pickup control unit into the image pickup head section, and transferring the photoelectric conversion output signal and the signal processing reference signal output from the solid-state image pickup element to the image pickup control unit. In the remote drive type solid-state imaging device having the above, the output signal line and the reference synchronization signal line for signal processing are contained in one shield line in a combined state.

[0010]

According to the remote drive type solid-state image pickup device of the present invention,
The photoelectric conversion output signal output from the solid-state imaging device in the imaging head unit is transferred in the cable in a state of being combined with the signal processing reference synchronization signal line, so that the difference in delay characteristics between the two is reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cable for connecting an image pickup head section and an image pickup control unit of a remote drive type solid-state image pickup device according to an embodiment of the present invention will be described below. The other components other than the cable of the remote drive type solid state image pickup device of the present embodiment have the same structure as the remote drive type solid state image pickup device of FIG. 3 described above, and therefore detailed description thereof will be omitted.

The cable of the remote drive type solid-state image pickup device of this embodiment has a structure as shown in FIG. 1 (side view) and FIG. 2 (cross-sectional view taken along the line XX in FIG. 1). The output signal line 330 for sending the photoelectric conversion output output from the solid-state image pickup device in the image pickup head section to the image pickup control unit and the signal processing reference sync signal line for sending the signal processing reference sync signal pulse by one core shield line 350. It has a structure in which it is assembled in a state where it is assembled inside, and other signal lines are housed in the outer periphery and covered with a mesh shield line 360.

[0013]

As described above, the remote drive type solid-state image pickup device of the present invention is one in which the cable to be used is assembled by combining the output signal line and the signal processing reference synchronizing signal line in one shield line. Since it is used, even if the length or shape of the cable changes, the change in the delay characteristics of both can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a structure of a cable connecting an image pickup head unit and an image pickup control unit of a remote drive type solid-state image pickup device of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a block diagram of a conventional remote drive type solid-state imaging device.

FIG. 4 is a transverse cross-sectional view showing a structure of a cable connecting an imaging head unit and an imaging control unit of a conventional remote drive type solid-state imaging device.

[Explanation of symbols]

300 Cable 330 Output signal line 340 Signal processing reference synchronization signal line 350 Multi-core shielded wire 360 Mesh shielded wire

Claims (1)

[Claims] 1. An imaging head unit having a solid-state imaging device,
The image pickup control unit, which is disposed separately from the image pickup head unit, is connected to the image pickup head unit and the image pickup control unit, and a drive signal is sent from the image pickup control unit into the image pickup head unit and is output from the solid-state image pickup device. In a remote drive type solid-state image pickup device provided with a cable for transferring a photoelectric conversion output signal and a signal processing reference signal to an image pickup control unit, an output signal line and a signal processing reference signal line are combined in one shield line. A solid-state imaging device characterized by being stored in a state.