What is claimed is:
1. A fixing apparatus for pressing a heat sink against a processing unit, the fixing apparatus comprising:
two pressing members, each of the pressing members defining a slot therein and forming at least one finger extending from a periphery of the slot for pressing the heat sink, an engaging portion formed at an end of each of the pressing members, a locking leg depending from an opposite end of each of the pressing members; and
a fastener defining two spaced engaging slots engagingly receiving the engaging portions of the pressing members, the fastener having two locking legs depending from opposite ends thereof respectively.
2. The fixing apparatus as described in claim 1, wherein two fixing holes are defined in each of the pressing members near opposite ends of the slot respectively.
3. The fixing apparatus as described in claim 1, wherein each of the pressing members has a concave inner edge.
4. The fixing apparatus as described in claim 1, wherein an operating portion is bent outwardly from a top edge portion of the fastener.
5. The fixing apparatus as described in claim 1, wherein an opening is longitudinally defined in the engaging portion.
6. The fixing apparatus as described in claim 5, wherein two locking grooves are defined in opposite lateral edges of the engaging portion respectively, for engagingly receiving the fastener at a corresponding engaging slot.
7. The fixing apparatus as described in claim 1, wherein each of the pressing members forms two fingers, which extend respectively inwardly and downwardly from the pressing member at opposite ends of the slot.
8. The fixing apparatus as described in claim 1, wherein a hook is formed on each of the locking legs.
9. A heat sink assembly comprising:
a circuit board;
a retention module surrounding a processing unit mounted on the circuit board;
a heat sink attached to the processing unit; and
a fixing apparatus fixing the heat sink against the processing unit, the fixing apparatus comprising a pair of spaced pressing members and a fastener connecting the pressing members at respective ends thereof, at least one finger extending from each of the pressing members and resiliently pressing the heat sink toward the processing unit, four locking legs respectively depending from opposite sides of the fixing apparatus and interlocking with the retention module.
10. The heat sink assembly as described in claim 9, wherein four locking columns extend upwardly from four corners of the retention module, and each of the locking columns defines a locking hole therein.
11. The heat sink assembly as described in claim 9, wherein a slot is defined in a central portion of each of the pressing members.
12. The heat sink assembly as described in claim 11, wherein two fingers extend from each of the pressing members, the fingers extending inwardly and downwardly from the pressing member at opposite ends of the slot respectively.
13. The heat sink assembly as described in claim 1, wherein two fixing holes are defined in the pressing member near opposite ends of the slot respectively.
14. The heat sink assembly as described in claim 9, wherein an operating portion is bent outwardly from a top edge portion of the fastener.
15. The heat sink assembly as described in claim 9, wherein an engaging portion is formed at an end of each of the pressing members.
16. The heat sink assembly as described in claim 15, wherein an opening is longitudinally defined in the engaging portion.
17. The heat sink assembly as described in claim 15, wherein the fastener defines two spaced engaging slots, the engaging slots corresponding to the engaging portions of the pressing members.
18. The heat sink assembly as described in claim 17, wherein two locking grooves are defined in respective opposite lateral edges of each of the engaging portions, the locking grooves engagingly receiving the fastener at a corresponding engaging slot.
19. The heat sink assembly as described in claim 9, wherein said pair of pressing members are only pivotally linked to said fastener, respectively, without other connection means therebetween.
20. A heat sink assembly comprising:
a heat sink stacked upon an electronic package and defining laterally opposite first and second sides thereof;
a retention module having portions circumferentially positioned beside said electronic package;
a fixing apparatus defining an elongated member laterally extending across said heat sink from the first side to the second side, a first leg extending downwardly from one end of the elongated member on said first side and a second leg extending downwardly from the other end of the elongated member on said second side, both said first and second legs being locked to the retention module;
said elongated member including spring fingers downwardly biasing the heat sink against the electronic package, and a fixing device; and
a fan supportably located on said fixing apparatus and secured to said fixing device.
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 power saving method for reducing the amount of power consumed by a touch display apparatus, wherein the touch display apparatus comprises a sensing area, the power saving method comprising the following steps:
determining whether an instruction event happens in the sensing area by scanning the sensing area within a first processing period;
when it is determined that no instruction event happens in the sensing area within the first processing period, providing a specific sensing area within the sensing area;
determining whether the instruction event happens in the specific sensing area by scanning the specific sensing area within a second processing period; and
when it is determined that no instruction event happens in the sensing area within the second processing period, ending the scanning of the sensing area.
2. The power saving method as claimed in claim 1, further comprising:
when it is determined that the instruction event happens in the specific sensing area within the second processing period, determining whether the instruction event happens in the sensing area by scanning the sensing area within the first processing period.
3. The power saving method as claimed in claim 1, further comprising:
marking the range of the specific sensing area.
4. The power saving method as claimed in claim 2, further comprising:
marking the range of the specific sensing area.
5. The power saving method as claimed in claim 1, further comprising:
determining whether an exception event occurs; and
when it is determined that no exception event occurs, determining whether the instruction event happens in the sensing area by scanning the sensing area within the first processing period.
6. The power saving method as claimed in claim 5, wherein the exception event is one of a set of a video displaying event, a document displaying event, a picture displaying event, and a webpage displaying event.
7. The power saving method as claimed in claim 2, further comprising:
determining whether an exception event occurs; and
when it is determined that no exception event occurs, determining whether the instruction event happens in the sensing area by scanning the sensing area within the first processing period.
8. The power saving method as claimed in claim 7, wherein the exception event is one of a set of a video displaying event, a document displaying event, a picture displaying event, and a webpage displaying event.
9. The power saving method as claimed in claim 1, further comprising:
displaying a predetermined picture or a predetermined message on the sensing area after the first processing period.
10. The power saving method as claimed in claim 2, further comprising:
displaying a predetermined picture or a predetermined message on the sensing area after the first processing period.
11. A touch display apparatus comprising:
a touch screen comprising a sensing area;
a marking module connected to the touch screen, used for marking a specific sensing area, wherein the specific sensing area falls within the sensing area;
and
a scanning module connected to the touch screen, used for scanning the sensing area within a first processing period so as to determine whether an instruction event happens in the sensing area, and when it is determined that no instruction event happens within the first processing period, scanning the specific sensing area within a second processing period so as to determine whether the instruction event happens in the specific sensing area, and when it is determined that no instruction event happens in the specific sensing area within the second processing period, ending the scanning of the sensing area.
12. The touch display apparatus as claimed in claim 11, wherein when it is determined that the instruction event happens in the specific sensing area within the second processing period, the scanning module scans the sensing area within the first processing period so as to determine whether the instruction event happens in the sensing area.
13. The touch display apparatus as claimed in claim 11, further comprising;
a processing module connected to the touch screen, used for determining whether an exception event occurs, wherein when it is determined that no exception event occurs, determining whether the instruction event happens in the sensing area by scanning the sensing area within the first processing period with the scanning module.
14. The touch display apparatus as claimed in claim 13, wherein the exception event is one of a set of a video displaying event, a document displaying event, a picture displaying event, and a webpage displaying event.
15. The touch display apparatus as claimed in claim 12, further comprising;
a processing module connected to the touch screen, used for determining whether an exception event occurs, wherein when it is determined that no exception event, determining whether the instruction event happens in the sensing area by scanning the sensing area within the first processing period with the scanning module.
16. The touch display apparatus as claimed in claim 15, wherein the exception event is one of a set of a video displaying event, a document displaying event, a picture displaying event, and a webpage displaying event.
17. The touch display apparatus as claimed in claim 11, wherein the marking module displays a predetermined picture or a predetermined message on the sensing area after the first processing period.
18. The touch display apparatus as claimed in claim 12, wherein the marking module displays a predetermined picture or a predetermined message on the sensing area after the first processing period.