1. A built-in flash pop-out mechanism of a camera, comprising:
a shaft member linearly movable along a first axis;
an arm member where one end is pivotally fixed at a tip end of the shaft member about a second axis that is perpendicular to the first axis;
a flash support member that is pivotally fixed at the other end of the arm member about a third axis that is parallel to the second axis;
a first biasing member biasing the shaft member along the first axis;
a second biasing member biasing the arm member about the second axis against the shaft member;
a third biasing member biasing the flash support member about the third axis against the arm member; and
the built-in flash being extended from a camera body with coplanar motions that pop out the built-in flash to increase its distance from an optical axis of a lens, the motions comprising a translation of the shaft member along the first axis by the first biasing member, a rotation of the arm member about the second axis by the second biasing member and a rotation of the flash support member about the third axis by the third biasing member.
2. The built-in flash pop-out mechanism as in claim 1, wherein the flash support member is translated along the first axis to increase its distance from the optical axis and rotated to further distance the flash support member from the optical axis.
3. The built-in flash pop-out mechanism as in claim 1, wherein the third axis is positioned closer to the interior of the camera body than the second axis with respect to the first axis when the built-in flash is in a popped out position.
4. The built-in flash pop-out mechanism as in claim 1, wherein the biasing forces of the first, second and third biasing members are selected so that the flash support member and the arm member are rotated about the third and second axes before the shaft member is moved toward the inside of the camera body along the first axis, when the flash support member is depressed in a direction along the first axis toward the camera body from a popped out position.
5. The built-in flash pop-out mechanism as in claim 1, wherein the flash support member is moved in a plane parallel to an imaging surface of an imaging device.
6. The built-in flash pop-out mechanism as in claim 1, wherein the arm member is disposed behind the flash support member.
7. The built-in flash pop-out mechanism as in claim 1, wherein the arm member can be retracted inside a flash cover.
8. The built-in flash pop-out mechanism as in claim 1, wherein the shaft member is disposed proximate to an edge of the camera body.
9. The built-in flash pop-out mechanism as in claim 1, wherein the directions of the rotational biasing forces about the second and third axes are opposite to each other.
10. The built-in flash pop-out mechanism as in claim 1, wherein a lateral axis of a flash body provided on the flash support member is parallel to a horizontal edge of an imaging device.
11. A camera comprising:
a pop-out mechanism for extending a built-in flash; the pop-out mechanism comprising:
a shaft member linearly movable along a first axis;
an arm member where one end is pivotally fixed at a tip end of the shaft member about a second axis that is perpendicular to the first axis;
a flash support member that is pivotally fixed at the other end of the arm member about a third axis that is parallel to the second axis;
a first biasing member biasing the shaft member along the first axis;
a second biasing member biasing the arm member about the second axis against the shaft member;
a third biasing member biasing the flash support member about the third axis against the arm member; and
the built-in flash being extended from a camera body with coplanar motions that pop out the built-in flash to increase its distance from an optical axis of a lens, the motions comprising a translation of the shaft member along the first axis by the first biasing member, a rotation of the arm member about the second axis by the second biasing member and a rotation of the flash support member about the third axis by the third biasing member.
12. A camera comprising:
a built-in flash mechanism comprising:
a shaft member linearly movable along a first axis;
an arm member where one end is pivotally fixed at a tip end of the shaft member about a second axis that is perpendicular to the first axis;
a flash support member that is pivotally fixed at the other end of the arm member about a third axis that is parallel to the second axis; and
the built-in flash being movable between a retracted position and a popped out position, the shaft member, the arm member, the flash support member and each of the axes being moved coplanarly when they in the process of being retracted or popped out.
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. A method for High Power User Equipment (HPUE) power class adaptation for coverage extension in Long Term Evolution (LTE), the method comprising:
setting, by the HPUE, a variable maximum transmit power to an artificially low predefined level that is below a maximum capability of the HPUE;
transmitting, by the HPUE, at an operating transmit power at or below the variable maximum transmit power as a function of wireless conditions detected by the HPUE, and reporting, by the HPUE to a serving evolved node B (eNB), a first power headroom as a function of the variable maximum transmit power;
responsive to determining by the HPUE, as a function of wireless conditions detected by the HPUE, that an increase in HPUE wireless transmit range is required, raising, by the HPUE, the variable maximum transmit power towards or to the maximum capability of the HPUE;
transmitting, by the HPUE, at an operating transmit power at or below the raised variable maximum transmit power as a function of the detected wireless conditions and reporting, by the HPUE to the serving eNB, a second power headroom as a function of the raised variable maximum transmit power.
2. The method of claim 1, wherein detecting the wireless conditions comprises detecting a wireless block error rate, a wireless transmission power headroom report, a wireless modulation and coding scheme allocation, and a wireless resource block allocation.
3. The method of claim 1, wherein the determining that an increase in wireless transmit range is required is based on a minimal wireless modulation and coding scheme, minimal wireless resource block allocation, and a wireless block error rate operating point.
4. The method of claim 1, wherein the maximum capability of the HPUE is 31 dBm corresponding to power class 1; and
wherein the artificially low predefined level is 23 dBm.
5. The method of claim 1, further comprising:
performing the raising the variable maximum transmit power in incremental steps.
6. The method of claim 5, further comprising:
lowering the variable maximum transmit power in incremental steps to the artificially low predefined level responsive to determining that the increase in HPUE wireless transmit range is no longer required.
7. The method of claim 1, wherein raising the variable maximum transmit power comprises raising the variable maximum transmit power to the maximum capability of the HPUE.
8. The method of claim 1, further comprising:
determining wireless conditions by the HPUE based in part on scheduling data received from the eNB; and
raising the variable maximum transmit power without assistance from the eNB, thereby operating within existing 3rd Generation Partnership Project LTE systems.
9. The method of claim 1, further comprising:
further limiting the variable maximum transmit power based on power class capabilities of other UEs within a proximity of the HPUE.
10. A High Power User Equipment (HPUE) using power class adaptation for coverage extension in Long Term Evolution (LTE), the HPUE comprising:
a radio configured to operate in a plurality of power classes;
a processor communicatively coupled to the radio; and
memory storing instructions that, when executed, cause the processor to:
set a variable maximum transmit power of the radio to an artificially low predefined level that is below a maximum capability of the radio;
transmitting, via the radio, at an operating transmit power at or below the variable maximum transmit power as a function of wireless conditions detected by the HPUE, and reporting, by the HPUE to a serving evolved node B (eNB), a first power headroom as a function of the variable maximum transmit power;
responsive to determining, as a function of wireless conditions detected via the radio, that an increase in wireless transmit range of the radio is required, raise the variable maximum transmit power towards or to the maximum capability of the radio; and
transmit, via the radio, at an operating transmit power at or below the raised variable maximum transmit power as a function of detected wireless conditions and reporting, to the serving eNB, a second power headroom as a function of the raised maximum transmit power.
11. The HPUE of claim 10, wherein the wireless conditions comprise detecting a wireless block error rate, a wireless transmission power headroom report, a wireless modulation and coding scheme allocation, and a wireless resource block allocation.
12. The HPUE of claim 10, wherein the determining that an increase in wireless transmit range is required is based on a minimal wireless modulation and coding scheme, minimal wireless resource block allocation, and a wireless block error rate operating point.
13. The HPUE of claim 10, wherein the maximum capability of the radio is 31 dBm corresponding to power class 1; and
wherein the artificially low predefined level is 23 dBm.
14. The HPUE of claim 10, wherein the instructions, when executed, further cause the processor to:
perform the raising the variable maximum transmit power in incremental steps.
15. The HPUE of claim 14, wherein the instructions, when executed, further cause the processor to:
lower the variable maximum transmit power in the incremental steps to the artificially low predefined level responsive to determining radio transmit range extension is not needed.
16. The HPUE of claim 10, wherein the instructions, when executed, further cause the processor to:
determine wireless conditions via the radio based in part on scheduling data received from the eNB; and
raise the variable maximum transmit power of the radio without assistance from the eNB, thereby operating within existing 3rd Generation Partnership Project LTE systems.
17. A Long Term Evolution (LTE) system for High Power User Equipment (HPUE) using power class adaptation for coverage extension, the system comprising:
an Evolved Node B (eNB); and
an HPUE communicatively coupled to the eNB;
wherein the HPUE is configured to:
set a variable maximum transmit power to an artificially low predefined level that is below a maximum capability of the HPUE;
transmit, at an operating transmit power at or below the variable maximum transmit power as a function of wireless conditions detected by the HPUE, and report, by the HPUE to the eNB, a first power headroom as a function of the variable maximum transmit power;
responsive to determining, as a function of wireless conditions detected by the HPUE and with signaling information from the eNB, that an increase in wireless transmit range of the HPUE is required, raise the variable maximum transmit power towards or to the maximum capability of the HPUE; and
transmit at an operating transmit power at or below the raised variable maximum transmit power as a function of detected wireless conditions and report, to the serving eNB, a second power headroom as a function of the raised maximum transmit power.