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Imaging system

A technology of camera system and camera department, applied in CCTV system, components of TV system, image communication, etc., can solve the problems of easy mixing, disorder of synchronization signal, etc.

Active Publication Date: 2014-03-19
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, as described above, since the cable connecting the imaging element or synchronous signal generating unit disposed at the front end of the endoscope insertion part and the processor is relatively long, and in the operation site where the endoscope device is used, There are many sources of noise such as electrosurgical knives arranged in close proximity, so the noise caused by external interference is easily mixed into the connecting cable, which may cause disturbance and other effects on the transmitted synchronization signal

Method used

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no. 1 Embodiment approach ）

[0017] Such as figure 1 As shown, the imaging system 1 having an imaging device according to the first embodiment of the present invention has: an endoscope 2 having an imaging element 100; a light source device 3 connected to the endoscope 2 in a detachable manner, The endoscope 2 provides illumination light; the processor 4 as a signal processing device is connected with the endoscope 2 in a detachable manner, and performs prescribed signal processing; and the monitor 5 as a display device, which is displayed by the processor 4 The generated image signal serves as an endoscopic image.

[0018] The endoscope 2 has an elongated insertion portion 6 inserted into a body cavity, an operation portion 7 provided at the rear end of the insertion portion 6 , and a universal cord 8 extending from the operation portion 7 . The universal cord 8 is branched into an optical cord 9 and a signal cord (signal cable) 10 near or in the middle of its base end. The light source connector 11 at...

no. 2 Embodiment approach ）

[0043] The imaging system having an imaging device according to the second embodiment of the present invention has the same configuration as that of the above-mentioned first embodiment, but the calculation method in the VD calculation circuit 117 is different. Since other configurations are the same as those of the first embodiment, detailed description thereof will be omitted here.

[0044] In the present embodiment, the VD calculation circuit 117 detects the period of the external synchronization signal (vertical synchronization signal (VD)) sequentially received by the receiving unit 116 , and performs calculation to obtain a weighted average value for the detected period.

[0045] Then, as in the first embodiment, the VD calculation circuit 117 outputs the vertical synchronization signal (VD) based on the obtained average value as the second reference synchronization signal to the timing generator (TG) 118, and the timing generator (TG) 118 makes a self-generated synchron...

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Abstract

This imaging system is provided with: a light-receiving element that outputs as image information a post-photoelectric-conversion electrical signal from a plurality of pixels; a transmission unit that transmits the image information output by the light-receiving element to the outside; a reception unit that receives a synchronization signal transmitted cyclically from the outside; a VD computation circuit that, with respect to the synchronization signal received by the reception unit, performs a process that performs a predetermined computation at the period of the synchronization signal; and a TG that controls the transmission unit on the basis of a second synchronization signal that has as a period a value that is on the basis of the computation results of the VD computation circuit.

Description

technical field [0001] The present invention relates to an imaging device provided at the tip of an endoscope and an imaging system including an endoscope having the imaging device. Background technique [0002] In recent years, endoscopes having imaging elements have been widely used in medical and industrial fields. [0003] Furthermore, there is also known a technique in which an endoscope system is constituted by a signal processing device called a processor detachably connected to the endoscope in charge of various signal processing of the endoscope. [0004] Furthermore, in such an endoscope system, there is also known an example in which a synchronous signal generating unit for display control of an endoscope image is provided on the processor side, and on the other hand, a front end portion of the endoscope insertion portion is equipped with A generator for generating a synchronization signal for the operation of the imaging element is provided. [0005] In this ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/04G02B23/24
CPCA61B1/00018H04N5/3765G02B23/2484H04N7/18H04N5/235H04N5/232A61B1/00006A61B1/045H04N23/665H04N25/7795H04N25/745
Inventor 桥本秀范
Owner OLYMPUS CORP