Conversion of Coax to HDMI

Need some advice:

I have a coax cable that carries a signal from my Dishnetwork receiver to a small room. The TV ( a monitor really) in the small room only has HDMI inputs. How can I hook up the Coax cable to the TV with HDMI inputs ? I want to avoid getting another Disnetwork receiver. Is there a gizmo available that can convert a coax signal to HDMI ?

Thanks