A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Preferably, the material is a thermoelectric material. Therefore, shorts caused by the surface morphology of a metal layer occur less frequently and the semiconductor fabricating yield improves. At least the part of the surfaces protruding from the adhesive layer are covered by a coating consisting of an alloy having a low melting point to solder the wires to the electrically conductive surface and to a first terminal bar. The clutch pawls are arranged such that an angle of lost motion of the freewheel is 10\xb0 or less.