Digital X-Ray Machine and Camera System

Parts of a Digital X-Ray Machine:

The digital X-Ray machine consists of an X-Ray tube and driver to source X-Ray. The X-Ray passes through the patient's body and the digital camera (located on the other side of the patient) captures the resulting image. The main base station controls the X-Ray tube, analyzes the image and displays the image on the CRT.

Digital Camera:

The digital camera converts the received image into digital signal and transfers the digitized image to the base station through a fiber optic link.

Main Base Station

The functions of the main base station are as follows:

• Drive and control the X-Ray tube
• Communicate with the digital camera system through Fiber
• Store the pictures on the hard disk for image retrieval and processing
• Interface to an operator console for overall system control and image manipulation
• Analyze and enhance the image stored on the hard disk and display the enhanced X-Ray image on a CRT monitor

Devices Used

• LatticeSC or ORT42G5
• FPGA
• Power Manager
• ispPAC
• CPLD

Functions Performed

• Digital interface to CCD
• Direct interface to Laser module

Lattice Advantages

• Reduced Board Space
• CML interfaces directly to most Laser Modules
• Reduced time to market
• High performance SERDES for increased system reliability

Functions Performed

• Maintain the temperature of the CCD detector
• Automatic Laser power control
• Laser diode end-of-life flag

Lattice Advantages

• Quiet operation through Analog feedback control loop
• Digital Temperature setting
• Easy interface to H-Bridge
• Compensate for Laser - Diode to Diode parametric variation
• Quiet operation due to Analog feedback control

Functions Performed

• Customizable DSP FIR and IIR Filter
• Interface to ADC
• Glue Logic: FIFO, Memory Interface, etc.

Lattice Advantages

• Easy customization of Algorithm
• High speed FPGA fabric for various glue logic
• High speed buffer management
• Multiple high performance MAC (Multiply & Accumulate primitive)
• Increase DSP throughput
• On-Chip PLL for timing control and pipelining

Functions Performed

• CPU bus interface state machines
• Multi-port memory interface for ORT42G5, Co-processor FPGA, and CPU
• SDRAM interface

Lattice Advantages

• Improves performance of DSP CPU operation without wait states
• Multi-port SDRAM drive without performance degradation
• FIFO for mixing and matching the processing and data transfer rates

Functions Performed

• Implements all the power supply management for that Port Card

Lattice Advantages

• Reduced board space
• Increased reliability
• Reduced time to market