What is claimed is:
1. A method of calculating capacitance between conductive patterns of an integrated circuit (IC) comprising:
defining a mesh of nodes in space between at least two electrodes;
calculating the electric potential at each said node; and
calculating the parasitic capacitance between said electrodes from said electric potentials.
2. The method of claim 1 further comprising one or more floating conductive patterns between said electrodes and wherein a set of surface nodes is defined upon the outer surface of each said floating conductive pattern.
3. The method of claim 2 wherein said surface nodes are mathematically treated as a single merged node of each said floating conductive pattern.
4. The method of claim 1 wherein said electric potentials are calculated by a linear equation of the form:
{overscore (A)}{right arrow over ()}{right arrow over (b)}
where {right arrow over ()} is a potential vector of N potentials corresponding to each of N said nodes in said mesh; {overscore (A)} is the matrix of coupling coefficients between said nodes, and {right arrow over (b)} is a vector of known constant or function.
5. The method of claim 3 wherein said electric potentials are calculated by a linear equation of the form:
{overscore (A)}{right arrow over ()}{right arrow over (b)}
where {right arrow over ()} is a potential vector of M potentials corresponding to each of said nodes in said mesh that are not surface nodes and to each said merged node corresponding to said surface nodes of each said floating conductive pattern; {overscore (A)} is the matrix of coupling coefficients between said nodes, and {right arrow over (b)} is a vector of known constant or function.
6. A recording medium, for storing program executable by a computer for calculating parasitic capacitance between conductive patterns of a integrated circuit (IC) having at least two electrodes, comprising:
a module for defining a mesh of nodes in a space between said electrodes;
a module for calculating the electric potential at each said node; and
a module for calculating the parasitic capacitance between said electrodes from said electric potentials.
7. The recording medium of claim 6, where the recording medium further includes a module for merging surface nodes of floating conductive patterns into a single merged node for each said floating conductive pattern by using an equivalent potential condition at the surface of the floating conductive patterns.
8. The recording medium of claim 6, wherein said module for calculating electric potential utilized a linear matrix equation of the form:
{overscore (A)}{right arrow over ()}{right arrow over (b)}
where {right arrow over ()} is a potential vector of N potentials corresponding to each of N said nodes in said mesh; {overscore (A)} is the matrix of coupling coefficients between said nodes, and {right arrow over (b)} is a vector of known constant or function.
9. The recording medium of claim 7, wherein said module for calculating electric potential utilized a linear matrix equation of the form:
{overscore (A)}{right arrow over ()}{right arrow over (b)}
where {right arrow over ()} is a potential vector of M potentials corresponding to each of said nodes in said mesh that are not surface nodes and to each said merged node corresponding to said surface nodes of each said floating conductive pattern; {overscore (A)} is the matrix of coupling coefficients between said nodes, and {right arrow over (b)} is a vector of known constant or function.
10. A method of calculating parasitic capacitance between electrodes of an integrated circuit (IC) having more than two electrodes to which a predetermined voltage is applied and floating conductive patterns are electrically isolated by an insulating layer between the electrodes, comprising the steps of:
dividing an electrode structure having the electrodes, the insulating layer, and the floating conductive patterns into a finite mesh, and defining nodes deposed on said mesh;
obtaining a potential vector using Poisson’s equation for each node; and
obtaining a parasitic capacitance between the electrodes from the potential vector.
11. The method of claim 10, wherein surface nodes of the floating conductive patterns are contained in each of the nodes.
12. The method of calculating parasitic capacitance according to claim 10, further comprising the step of merging the nodes of the floating conductive patterns into one node by using an equivalent potential condition at the surfaces of the floating conductive patterns.
13. The method of claim 10, wherein said electric potentials are calculated by a linear equation of the form:
{overscore (A)}{right arrow over ()}{right arrow over (b)}
where {right arrow over ()} is a potential vector of N potentials corresponding to each of N said nodes in said mesh; {overscore (A)} is the matrix of coupling coefficients between said nodes, and {right arrow over (b)} is a vector of known constant or function.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus, comprising:
an optical disk drive;
a drive housing containing the optical disk drive; and
a radio-frequency identification (RFID) reader co-located within the drive housing with the optical disk drive, or integrated with the optical disk drive.
2. The apparatus of claim 1, further comprising an RFID tag located opposite the RFID reader, the RFID tag positioned to be obscured from detection by the RFID reader when an optical disk media is within the optical disk drive.
3. The apparatus of claim 2, wherein the drive housing includes a stationary housing base and an openable housing dock.
4. The apparatus of claim 3, wherein the RFID reader is located on the housing base portion of the drive housing.
5. The apparatus of claim 3, wherein the RFID tag is located on the housing dock portion of the drive housing.
6. The apparatus of claim 2, further comprising an optical disk media having a second RFID tag located thereon, the second RFID tag positioned to be opposite the RFID reader when the optical disk media is within the optical disk drive.
7. The apparatus of claim 1, further comprising an optical disk media having a RFID tag located thereon, the RFID tag positioned to be opposite the RFID reader when the optical disk media is within the optical disk drive.
8. The apparatus of claim 7, wherein the drive housing includes a stationary housing base and an openable housing dock.
9. The apparatus of claim 8, wherein the RFID reader is located on the housing base portion of the drive housing.
10. A method, comprising:
activating a radio-frequency identification (RFID) reader to detect presence of an optical disk media within an optical disk drive; and
applying power to the optical disk drive when the presence of an optical disk media within the optical disk drive is detected by the RFID reader.
11. The method of claim 10, further comprising activating the RFID reader to read an RFID tag, wherein the reading of the RFID tag indicates the lack of an optical disk media within an optical disk drive.
12. The method of claim 11, wherein inability of the RFID reader to read the RFID tag indicates the presence an optical disk media within an optical disk drive.
13. The method of claim 10, further comprising periodically repeating the operation of activating the RFID reader to detect the presence of an optical disk media within the optical disk drive until presence of an optical disk media within the optical disk drive is detected by the RFID reader.
14. The method of claim 10, further comprising activating the RFID reader to read a second RFID tag on the optical disk media within the optical disk drive; and permitting access to the contents of the optical disk media based on the reading of the second RFID tag by the RFID reader.
15. A computer-readable medium having computer-executable instructions, which, when executed, enable an apparatus to
activate a radio-frequency identification (RFID) reader to read an RFID tag on an optical disk media within an optical disk drive; and
permit access to the contents of the optical disk media based at least in part on the reading of the RFID tag by the RFID reader.
16. The computer-readable medium of claim 15, wherein the computer-executable instructions, which, when executed further enable the apparatus to
prevent access to the contents of the optical disk media when the RFID reader is unable to read an RFID tag on an optical disk media.
17. The computer-readable medium of claim 16, wherein the computer-executable instructions, which, when executed further enable the apparatus to
prevent access to the contents of the optical disk media when the RFID reader reads an RFID tag on an optical disk media where the read RFID tag does not match an approved RFID key.
18. The computer-readable medium of claim 15, wherein the computer-executable instructions, which, when executed further enable the apparatus to
check the authenticity of the content of the optical disk media once access to the contents of the optical disk media is permitted.
19. The computer-readable medium of claim 15, wherein the computer-executable instructions, which, when executed further enable the apparatus to
activate the RFID reader to detect presence of the optical disk media within the optical disk drive; and
applypower to the optical disk drive when the presence of an optical disk media within the optical disk drive is detected by the RFID reader.
20. A system comprising:
an apparatus, comprising:
an optical disk drive,
a drive housing containing the optical disk drive, and
a radio-frequency identification (RFID) reader co-located with the optical disk drive within the drive housing or integrated with the optical disk drive;
a bus coupled to the apparatus; and
a mass storage coupled to the bus.
21. The system of claim 20, wherein the system is selected from the group consisting of a set-top box, a digital camera, a CD player, a DVD player, a wireless mobile phone, a tablet computing device, and a laptop computing device.
22. The system of claim 20, further comprising a RFID tag located opposite the RFID reader, the RFID tag positioned to be obscured from the RFID reader when an optical disk media is within the optical disk drive.
23. The system of claim 20, further comprising an optical disk media having a RFID tag located thereon, the RFID tag positioned to be opposite the RFID reader when the optical disk media is within the optical disk drive.
24. The system of claim 23, wherein the RFID tag is a Fabric RFID tag.
25. An optical disk media comprising:
a substrate;
content stored on the substrate and configured for optical reading; and
a radio-frequency identification (RFID) tag disposed on the substrate.
26. The optical disk media of claim 25, wherein the RFID tag is a Chipless RFID tag.
27. The optical disk media of claim 26, wherein the RFID tag is a Fabric RFID tag.