1. A method comprising:
sending a first buffer status report to indicate an amount of data in a buffer that is to be sent;
discarding data from the buffer, and
sending a second buffer status report to indicate the change in the amount of data in the buffer as a result of discarding data.
2. The method of claim 1 wherein the first buffer status report includes an amount of data in the buffer.
3. The method of claim 1 further comprising receiving a grant to send at least a portion of the data in the buffer.
4. The method of claim 3 wherein sending the second buffer status report further comprises using a portion grant to send the second buffer status report.
5. The method of claim 3 further comprising sending data from the buffer according to the received grant.
6. The method of claim 1 wherein discarding data further comprising discarding data from the buffer according one of an expiration of a timer, a trigger of a buffer overflow method, a detection of malicious data.
7. The method of claim 1 further comprising receiving a grant to send the first buffer status report.
8. A method comprising:
sending a first buffer status report to indicate an amount of data in a buffer that is to be sent;
changing the amount of data in the buffer;
sending a second buffer status report to indicate the change in the amount of data in the buffer that is to be sent.
9. The method of claim 8 wherein changing the amount of data in the buffer comprises discarding data from the buffer since the first buffer report was sent.
10. The method of claim 9 wherein discarding data further comprising discarding data from the buffer according one of an expiration of a timer, a trigger of a buffer overflow method, a detection of malicious data.
11. The method of claim 8 wherein changing the amount of data in the buffer comprises increasing data to the buffer since the first buffer report was sent.
12. The method of claim 8 further comprising receiving a grant to send at least a portion of the data in the buffer.
13. The method of claim 12 wherein sending the second buffer status report further comprising using a portion of the grant to send the second buffer status report.
14. An apparatus comprising:
a buffer to store data to be sent from the apparatus;
a transceiver to send the stored data, and
a processor coupled to the buffer and the transceiver wherein the processor creates a first buffer status report to indicate an amount of data stored in the buffer to be sent by the transceiver and wherein the processor creates a second buffer status report when the amount of data in the buffer changes after the first buffer status report is sent by the transceiver.
15. The apparatus of claim 14 wherein the transceiver sends the first buffer status report after receiving a grant that indicates at least a portion of the data in the buffer to be sent by the transceiver.
16. The apparatus of claim 15 wherein the transceiver sends the portion of data in the buffer indicated in the grant.
17. The apparatus of claim 14 wherein the amount of data in the buffer changes after data is discarded from the buffer.
18. The apparatus of claim 17 wherein the data is discarded at the expiration of a timer.
19. The apparatus of claim 14 wherein the amount of data in the buffer changes by increasing the data in the buffer.
20. The apparatus of claim 14 wherein the transceiver receives and indication to send the first buffer status report.
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:
at least one electronic component;
an enclosure enclosing the at least one electronic component, the enclosure including at least one wall defined by a membrane;
an electromechanical transducer, wherein the electromechanical transducer comprises:
a first piezoelectric actuator, a first end of which is fixed and a second end of which is rigidly attached to a first end of the membrane; and
a second piezoelectric actuator, a first end of which is fixed and a second end of which is rigidly attached to a second end of the membrane, wherein application of alternating current to the first and second piezoelectric actuators generates a pulsating mechanical deformation of the membrane; and
one or more openings in the enclosure for facilitating volume displacement of air from within the enclosure, wherein the volume displacement of air is provided by the pulsating mechanical deformation of the membrane.
2. The apparatus of claim 1, wherein the at least one electronic component comprises at least one light emitting diode (LED) device.
3. The apparatus of claim 2, wherein the membrane is an optical membrane comprising a transparent or translucent optical diffuser.
4. The apparatus of claim 2, wherein the membrane is an optical membrane comprising a wavelength converting element including at least one phosphor compound.
5. The apparatus of claim 2, wherein the membrane is an optical membrane comprising a refractive lens.
6. The apparatus of claim 2, wherein the membrane is an optical membrane comprising a reflective surface.
7. The apparatus of claim 1, wherein the at least one electronic component comprises:
a circuit board; and
a plurality of electronic devices disposed on the circuit board, the electronic devices being selected from a group consisting of integrated circuit (IC) devices and discrete electronic devices.
8. The apparatus of claim 1, wherein the volume displacement of air provided by the pulsating mechanical deformation of the membrane and a size of the one or more openings are selected such that the volume displacement of air provided by the pulsating mechanical deformation of the membrane produces at least one synthetic jet arranged to provide active cooling of the at least one electronic component.
9. The apparatus of claim 1, wherein the electromechanical transducer is configured to generate the pulsating mechanical deformation of the membrane in which frequency components of the pulsating mechanical deformation at frequencies higher than 1500 Hz comprise no more than 10% of the total amplitude of the pulsating mechanical deformation.
10. The apparatus of claim 1, wherein the electromechanical transducer is configured to generate the pulsating mechanical deformation of the membrane at a dominant frequency of less than 100 Hz.
11. The apparatus of claim 1, wherein the enclosure comprises the membrane as a tubular membrane.
12. A piezoelectric actuated assembly, comprising:
a first piezoelectric actuator a first end of which is fixed;
a second piezoelectric actuator a first end of which is fixed; and
a compliant sheet having a first end that is rigidly attached to a second end of the first piezoelectric actuator, and a second end that is rigidly attached to a second end of the second piezoelectric actuator;
wherein application of alternating current to the first and second piezoelectric actuators generates a pulsating mechanical deformation of the compliant sheet.
13. The piezoelectric actuated assembly of claim 12, wherein the compliant sheet is preloaded such that the compliant sheet is deformed away from a state of minimum stress when the alternating current is not applied to the first and second piezoelectric actuators.
14. The piezoelectric actuated assembly of claim 12, comprising an additional weight attached to the compliant sheet.
15. The piezoelectric actuated assembly of claim 12, comprising an enclosure disposed around the compliant sheet and the first and second piezoelectric actuators.
16. The piezoelectric actuated assembly of claim 15, wherein the enclosure comprises at least one opening, wherein a volume displacement of air is provided through the piezoelectric actuated assembly via the at least one opening by the pulsating mechanical deformation of the compliant sheet.
17. The piezoelectric actuated assembly of claim 12, wherein the compliant sheet comprises an optical membrane of a solid state lighting device.
18. The piezoelectric actuated assembly of claim 12, wherein the compliant sheet comprises a wall of an enclosure surrounding at least one electronic component.
19. An apparatus, comprising:
at least one electronic component;
an enclosure enclosing the at least one electronic component, the enclosure including at least one wall defined by a membrane; and
an electromechanical transducer, wherein the electromechanical transducer comprises:
a first piezoelectric actuator, a first end of which is fixed and a second end of which is rigidly attached to a first end of the membrane; and
a second piezoelectric actuator, a first end of which is fixed and a second end of which is rigidly attached to a second end of the membrane, wherein application of alternating current to the first and second piezoelectric actuators generates a pulsating mechanical deformation of the membrane.