TH8981A - A disc using reactive light - Google Patents

Abstract

The methods and tools for recording and reading both permanently stored data and user-inserted data onto optical discs have been revealed. Optical discs are made with permanent data stored through a secondary layer of the disc. The inserted data is recorded in an extended/store layer adjacent to the secondary layer. The data and user-inserted data can also be read using a laser beam with different wavelengths.

Claims (11)

1. The data storage medium consists of: a. The first area, which contains indelible data captured by light using reflected waves; and b. The second area, which is adjusted to record user data using light capture. 2. The storage media as specified in Claim 1 consists of a flat disk in which region one is selected and replaced in a parallel plane on the disk from region two. 3. The data storage medium as specified in claim 1 in area two also consists of: a. an amplification layer which expands to receive the collected light waves and b. a storage layer which is adjusted to hold the amplification layer in the state in which it expands. 4. The data storage medium as specified in Claim 1, in the aforementioned area, contains a secondary layer and optically detectable data, including pits within that secondary layer. 5. The data storage media as specified in Claim 1 also includes a reflective layer adjacent to areas one and two. 6. The method of fabricating a light-based data storage medium consists of the following steps: A. Provide a substrate layer. This substrate layer has a surface. B. At the first position on its surface, create a light-sensitive mark. This mark represents permanent data. C. At a second position on the surface, create a light-sensitive mark that can detect emitted data. This second position replaces the first position on the surface laterally. 7. The method specified in claim 6 in the layer of marking the use of light waveforms in the first position is a layer of injecting holes into the secondary layer. 8. The method described in Claim 6 in the erasable mark formulation also comprises the following steps: a. Providing an expanding material on the aforementioned substrate; this expanding material expands in response to a specific wavelength of light. b. Dispersing light to the light-receiving portion of the expanding material in order to form an erasable light-detecting mark. 9. The method specified in claim 8 in the layer of expansion material preparation also includes the steps of a. supplying the expansion layer on the said surface and b. supplying the storage layer on the said expansion layer. 10. The method described in claim 6 also includes the procedure for applying the reflective layers to the first and second positions as previously stated. 11. A device for recording user-entered data and reading permanent data and user-entered data from a disk using light, consisting of: a. A sublayer. This sublayer is translucent, allowing at least the first wave of light to pass through. b. A pit at a specific position on this surface, which represents permanent data. c. An expansion region on a second region. On this sublayer, the second region replaces the first region in the direction of the expansion region. It also consists of: 1) An expansion layer. This expansion layer expands in response to light at least the minimum of the first wave of light, and 11) A storage layer. This storage layer stores the expanded layer in an expanded state when the light is extinguished. d. A device for using the aforementioned light of the first wave of light with the expansion layer to obtain the user-entered data. e. A device for using a beam of light to read the expansion layer to capture the light wave of the user-entered data. and f. A device for using a beam of light to read the pits to capture the light wave of the permanent data. (11 claims, 2 pages, 4 figures)