Abstract: A method and apparatus for providing a graphical image on an optical recording disc are described. The method includes the steps of storing a digital image in a first coordinate system as a first array of bits in a digital memory, transforming the digital image from the first coordinate system to an angular coordinate system such as polar coordinates to generate a second array of bits, and then using the second array of bits to modulate a writing beam in an optical disc mastering process to write the transformed digital image onto an optical recording disc. The digital image can be obtained alternately from an optical scanner or conventional image preparation software. The method can also include the step of editing an initial array of bits to form the first array of bits.

Abstract: An information recording medium includes a substrate having first and second sides. A layer of photoresist is deposited on the first side of the substrate. This layer of photoresist has a selected thickness and defines an area of openings therein such that the first side of the substrate is exposed at the openings, the openings being distributed in a pattern indicative of selected stored information. A reflecting layer is deposited on the photoresist layer and on the first side of the substrate at the openings. Both the substrate and the layer of photoresist are adapted to transmit the reading beam such that a portion of the reading beam incident on the second side of the substrate is reflected out of the substrate by the reflecting layer, both in a first region comprising the openings and in a second region between the openings.

Abstract: An information recording medium includes a substrate having first and second sides. A layer of photoresist is deposited on the first side of the substrate. This layer of photoresist has a selected thickness and defines an area of openings therein such that the first side of the substrate is exposed at the openings, the openings being distributed in a pattern indicative of selected stored information. A reflecting layer is deposited on the photoresist layer and on the first side of the substrate at the openings. Both the substrate and the layer of photoresist are adapted to transmit the reading beam such that a portion of the reading beam incident on the second side of the substrate is reflected out of the substrate by the reflecting layer, both in a first region comprising the openings and in a second region between the openings.