For example, {HEAD ~ the present invention} has been described with {TAIL ~ reference} to Charge Coupled Devices 
described with
For example , { HEAD ~ the present invention } has been described with { TAIL ~ reference } to Charge Coupled Devices
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH