摘要:
A load control device is adapted to be disposed in series with an AC voltage source and an electrical load and is operable to provide substantially all voltage provided by the AC voltage source to the load. The load control device comprises a controllably conductive device, a controller, a zero-crossing detector, and a power supply for generating a substantially DC voltage for powering the controller. The power supply is operable to charge an energy storage device to a predetermined amount of energy each half-cycle. The controller is operable to determine when the power supply has stopped charging from the zero-crossing detector each half-cycle, and to immediately render the controllably conductive device conductive to conduct the full load current. Before the controllably conductive device begins to conduct each half-cycle, only a minimal voltage develops across the power supply to allow the energy storage device to charge.
摘要:
A load control device is adapted to be disposed in series with an AC voltage source and an electrical load and is operable to provide substantially all voltage provided by the AC voltage source to the load. The load control device comprises a controllably conductive device, a controller, a zero-crossing detector, and a power supply for generating a substantially DC voltage for powering the controller. The power supply is operable to charge an energy storage device to a predetermined amount of energy each half-cycle. The controller is operable to determine when the power supply has stopped charging from the zero-crossing detector each half-cycle, and to immediately render the controllably conductive device conductive to conduct the full load current. Before the controllably conductive device begins to conduct each half-cycle, only a minimal voltage develops across the power supply to allow the energy storage device to charge.
摘要:
A keyboard can be modified to facilitate use in a variety of applications such as, for example, gaming. Examples of modifications include, but are not limited to, placing a numeric keypad to the left of an alphanumeric keypad, having particular keys with a different color, changing the relative arrangement of keys, adding new keys, and moving functions to different sites on the keyboard.
摘要:
A high-speed semiconductor device includes a substrate having an upper substrate surface, a lower substrate surface, and a periphery bounding the upper and the lower substrate surfaces, the substrate further having an upper substrate ground trace providing an electrical path to the lower substrate surface through a substrate ground via; an array of solder balls attached to the lower substrate surface, the array of solder balls including a plurality of ground solder balls disposed at the periphery and electrically connected to the substrate ground via.
摘要:
An area array package comprising a die attach area for attaching a die to a substrate, a network of staggered bond fingers, and a network of bond islands for coupling bond wires between the bond islands and die bond pads is provided. A network of package leads, for example, a network of solder balls in a ball grid array, is depopulated to permit greater trace route flexibility and via placement within the substrate. Stacked die and multi-chip packages are also disclosed. A method for accommodating a high pin-count die in an area array package is also included.
摘要:
A hybrid interconnect includes a through silicon via and a wire bond. Hybrid interconnects enable better layout of a stacked IC by combining benefits from both interconnect technologies. In one hybrid interconnect, wire bonds couples a second tier die mounted on a first tier die to a redistribution layer in the first tier die. Through silicon vias in the first tier die are coupled to the wire bonds to provide communication. In another hybrid interconnect, a wire bond couples a redistribution layer on a first tier die to a packaging substrate on which the first tier die is mounted. The redistribution layer couples to a second tier die mounted on the first tier die to provide a power supply to the second tier die. Through silicon vias in the first tier die couple to the second tier die to provide communication from the packaging substrate to the second tier die.
摘要:
A multi-positional, multi-level user interface system including a keyboard hinged over a base surface for a pointing device such as a mouse. The keyboard and base rotate relative to each other about a hinge axis to reveal the surface, providing a portable keyboard and pointing surface. A kickstand can support the keyboard above the base while in an open position. The keyboard and pointing device can be used with two hands with the system resting in a user's lap. The keyboard can also swivel about an axis other than the hinge axis. The keyboard can swivel 180 degrees for left-handed use, and can be positioned at other detent angles. A mouse can also be stowed on the base with a magnetic, friction, or other coupling. The interface system can further act as a communication hub for other peripheral devices, such as a joystick, to communicate with a computing device.
摘要:
A modified keyboard to facilitate use in a variety of applications such as, for example, gaming is provided. The modified keyboard can include features such as, for example, the relocation of the numeric keypad to the left of an alphanumeric keypad, the change in color of particular keys, the change in relative arrangement of keys, the addition of new keys, and the movement of functions to different sites on the keyboard.
摘要:
A hybrid interconnect includes a through silicon via and a wire bond. Hybrid interconnects enable better layout of a stacked IC by combining benefits from both interconnect technologies. In one hybrid interconnect, wire bonds couples a second tier die mounted on a first tier die to a redistribution layer in the first tier die. Through silicon vias in the first tier die are coupled to the wire bonds to provide communication. In another hybrid interconnect, a wire bond couples a redistribution layer on a first tier die to a packaging substrate on which the first tier die is mounted. The redistribution layer couples to a second tier die mounted on the first tier die to provide a power supply to the second tier die. Through silicon vias in the first tier die couple to the second tier die to provide communication from the packaging substrate to the second tier die.
摘要:
A high-speed semiconductor device includes a substrate having an upper substrate surface, a lower substrate surface, and a periphery bounding the upper and the lower substrate surfaces, the substrate further having an upper substrate ground trace providing an electrical path to the lower substrate surface through a substrate ground via; an array of solder balls attached to the lower substrate surface, the array of solder balls including a plurality of ground solder balls disposed at the periphery and electrically connected to the substrate ground via.