1. A method for capacitive detection, implementing a plurality of electrodes capable of allowing the detection of objects in their proximity by capacitive coupling, comprising: a step of simultaneous polarization of at least a part of said electrodes with different excitation potentials, said excitation potentials being generated with respect to a reference potential such that the scalar product over a predetermined duration of at least two of these excitation potentials is zero or very much less than the scalar product of one andor the other of these excitation potentials with itself over said predetermined duration.
2. The method of claim 1, wherein the generated excitation potentials comprise at least one excitation potential that is variable over time.
3. The method of claim 1, in which the generated excitation potentials comprise periodic excitation potentials of different frequencies.
4. The method of claim 1, wherein the generated excitation potentials comprise at least one excitation potential the frequency content of which is spread over a spectral band.
5. The method of claim 1, wherein the generated excitation potentials comprise two periodic excitation potentials of the same frequency in phase quadrature.
6. The method of claim 1, wherein the generated excitation potentials comprise at least one excitation potential the scalar product of which with an interference signal is minimized.
7. The method of claim 1, wherein the generated excitation potentials comprise at least one excitation potential substantially equal to the reference potential.
8. The method according to claim 1, which also comprises a step of measuring the capacitive coupling of an electrode comprising:
acquisition of representative measurements of the electrical charge of the electrode; and
demodulation of said representative measurements of the charge by using the excitation potential of said electrode.
9. A device for capacitive detection, comprising plurality of electrodes capable of allowing the detection of objects in their proximity by capacitive coupling; excitation means capable of simultaneously polarizing at least a part of said electrodes with different excitation potentials, said excitation potentials being generated with respect to a reference potential such that the scalar product over a predetermined duration of at least two of these excitation potentials is zero or very much less than the scalar product of one andor the other of these excitation potentials with itself over said predetermined duration.
10. The device of claim 9, which also comprises measurement means referenced to the same excitation potential as the electrodes to which they are linked.
11. The device of claim 10, which also comprises demodulation means linked to the measurement means, and capable of producing a representative measurement of the capacitive coupling referenced to the reference potential.
12. The device of claim 9, which also comprises means making it possible to polarize at least one electrode:
at several different excitation potentials; andor
at at least one excitation potential or at the reference potential.
13. An appliance comprising: a device for capacitive detection according to claim 9, and implementing the method according to claim 1.
14. The appliance of claim 13, which comprises on a first face a display screen and first substantially transparent electrodes polarized at a first excitation potential, and on a second face opposite to the first face, second electrodes polarized at a second excitation potential.
15. The appliance of claim 14, which is of one of the following types: smart phone, tablet.
16. The appliance of claim 13, which comprises a plurality of modules capable of moving in relation to each other, each module comprising electrodes polarized at an excitation potential different from the other modules.
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 array of memory cells; and
a controller coupled to the array and configured to sense a page of memory cells coupled to an access line by:
pre-charging only a single subset of a number of data lines coupled to the page, wherein the data lines of the single subset include at least two data lines that are directly adjacent to each other; and
activating the access line after pre-charging the single subset of the number of data lines.
2. The apparatus of claim 1, wherein more than two subsets of data lines are coupled to the page.
3. The apparatus of claim 1, wherein the single subset of the number of data lines is coupled to those memory cells of the page storing at least a portion of a single sector of data of the page.
4. The apparatus of claim 1, wherein the controller is configured to sense the single subset of the number of data lines after activating the access line.
5. The apparatus of claim 1, wherein the controller is configured to sense the page of memory cells as part of a continuous sense operation.
6. The apparatus of claim 1, wherein:
the page of memory cells includes a number of physical portions of memory cells; and
the apparatus includes a number of buffers associated with each physical portion.
7. A method for operating memory, comprising:
pre-charging only one subset of a number of data lines coupled to a page of memory cells, wherein the data lines of the one subset include at least two data lines that are directly adjacent to each other;
activating an access line coupled to the page of memory cells after pre-charging the one subset of the number of data lines; and
sensing the one subset of the number of data lines.
8. The method of claim 7, wherein:
the one subset is coupled to those memory cells of the page storing at least a portion of one sector of data of the page; and
sensing the one subset of the number of data lines includes determining the at least a portion of the one sector of data.
9. The method of claim 7, wherein the method includes:
pre-charging only a second subset of the number of data lines coupled to the page while the access line remains activated and after sensing the one subset of the number of data lines; and
sensing the second subset of the number of data lines.
10. The method of claim 7, wherein the method includes:
applying a signal to only one of a number of drain select lines after activating the access line; and
sensing the one subset of the number of data lines while the signal is applied to the one of the number of drain select lines.
11. The method of claim 7, wherein activating the access line coupled to the page of memory cells includes applying a sensing signal to the access line.
12. The method of claim 7, wherein activating the access line coupled to the page of memory cells includes applying a pass signal to additional access lines of a block of memory cells including the page of memory cells.
13. The method of claim 7, wherein the method includes:
using a controller to pre-charge the one subset of the number of data lines;
using a controller to activate the access line coupled to the page of memory cells; and
using a controller to sense the one subset of the number of data lines.
14. An apparatus, comprising:
an array of memory cells; and
a controller coupled to the array and configured to sense a page of memory cells coupled to an access line by:
pre-charging only a first subset of a number of data lines coupled to the page, wherein the data lines of the first subset include at least two data lines that are directly adjacent to each other;
activating the access line after pre-charging the first subset of the number of data lines; and
while the access line remains activated, pre-charging only a second subset of the number of data lines, wherein the data lines of the second subset include at least two data lines that are directly adjacent to each other.
15. The apparatus of claim 14, wherein:
the first subset of the number of data lines is coupled to those memory cells of the page storing at least a portion of a first sector of data of the page; and
the second subset of the number of data lines is coupled to those memory cells of the page storing at least a portion of a second sector of data of the page.
16. The apparatus of claim 14, wherein the controller is configured to:
sense the first subset of the number of data lines after activating the access line and before pre-charging the second subset of the number of data lines; and
sense the second subset of the number of data lines after pre-charging the second subset.
17. The apparatus of claim 14, wherein the array of memory cells is a three-dimensional array.
18. The apparatus of claim 14, wherein the controller is configured to sense the page of memory cells in response to receiving a read command from a host.
19. The apparatus of claim 14, wherein the controller is configured to pre-charge only a third subset of the number of data lines while the access line remains activated.