Communication device

Abstract

The communication unit used in the X-ray imaging device of the present invention has an error detection function for detecting communication errors, and a FIFO for temporarily storing data received from the outside, that is, the control / image processing device by the reception function of the communication control unit. The transmission function of the communication control section controls so that the received data temporarily stored by the FIFO is only when no error is detected during a predetermined period before and after the reception function of the communication control section receives data from the control / image processing device. The data is sent to the outside and written, so even when the cable is plugged and unplugged, the external device, that is, the control / image processing device side is restarted, etc., the error detection function detects it as a communication error, and it is possible to prevent inadvertent errors in these cases. to write data. Therefore, the write operation can also be performed without a communication error. As a result, inadvertent writing of data can be prevented even if a communication error occurs, and operability can be improved.

Description

technical field [0001] The present invention relates to a communication device including a receiving unit that receives data from outside and a sending unit that sends data to the outside. Background technique [0002] As a device using a communication device, a radiation imaging device used in the medical field, industrial field, and nuclear energy field, etc., will be described as an example, and X-rays will be used as an example of incident radiation. device as an example. [0003] The X-ray imaging device A1 is composed of a flat panel X-ray detector (FPD: Flat Panel Detector), such as figure 1 As shown, it includes a gate drive circuit 1 , a detection element circuit 2 , a charge-to-voltage conversion amplifier 3 , an A / D converter 4 , a panel control unit 5 , an image correction unit 6 and a communication unit 7 . In addition, an image buffer memory 8 is provided to store pixel values ​​converted into digital values ​​by the A / D converter 4 , and the panel control un...

AI Technical Summary

Problems solved by technology

In addition, there are cases where the communication cable is accidentally inserted and pulled out, and in particular, the communication cable may be disconnected without knowing it.

Because the X-ray imaging device A1 and the control / image processing device A3 are connected by an optical fiber, the circuits in the X-ray imaging device A1 and the control / image processing device A3 can cope with hot plugging (connection in the state where the power is turned on). cable separation), but for a system with X-ray imaging device A1 and control / image processing device A3, in order to cope with this problem, it cannot cope with hot plugging

Images