A program reception apparatus is provided. More in particular the invention relates to a stereoselective method for the preparation of diastereomerically pure hexahydro-furo2,3-bfuran-3-ol, as well as methods for the crystallization of 4-methoxy-tetrahydro-furo3,4-bfuran-2-one and for the epimerization of 4-methoxy-tetrahydro-furo3,4-b-furan-2-one to 4-methoxy-tetrahydro-furo3,4-bfuran-2-one. Finally, a phase control signal for carrying out a phase control is generated by using the obtained amount of correlations. In one embodiment, two sheets of piezoelectric material are connected electrically in parallel. Forming the color filter on the TFT eliminates the need to form black matrices on the second substrate, preventing misalignment of the two substrates due to different heat sensitivities. The cassette has a rigid base body with fitted chambers and passages and a foil that covers the chambers and passages.