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US 2006/0132066 A1Published application
Synchronization of lamp stabilizing pulses with frame rates of PWM LCOS devices
AssigneeIntel Corporation
InventorsPaul Winer, Kenneth Salsman, Cynthia Bell, Michael O'Connor
Life of this patent
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Abstract
A lamp synchronization signal may be used in an LCOS imaging environment, such as a projection system.
Claims20
A method, comprising:
- detecting an edge of a first signal, the first signal periodically changing between a first voltage and a second voltage, wherein the first voltage is supplied to a first electrode of a pulse width modulated display panel;
- identifying a display cycle of the display panel, the display cycle comprising a bright state and a dark state, wherein the display panel is turned on during the bright state and is turned off during the dark state;
- and
- generating a synchronization signal to be supplied to a power supply of a lamp, the lamp providing light to the display panel, wherein the synchronization signal occurs during a predetermined time of the display cycle.
1 more element
A projection system, comprising:
- a panel for receiving light and generating an optical image, wherein the light is pulse width modulated;
- a lamp for transmitting the light to the panel;
- and
- a display chip, wherein the display chip:
- sets a field sync signal, the field sync signal being associated with the panel;
- generates a synchronization signal based on the field sync signal;
- and
- sends the synchronization signal to the lamp, wherein the synchronization signal stabilizes the light generated by the lamp.
5 more elements
A display chip, comprising:
- a first portion, wherein the first portion generates a periodic synchronization signal based on a field sync signal, the field sync signal being associated with a panel, the panel having an associated display cycle, the display cycle having an on portion and an off portion, wherein light is processed by the panel during the on portion and light is not processed by the panel during the off portion;
- and
- a second portion, wherein the second portion transmits the periodic synchronization signal to a power supply of an arc lamp, wherein the arc lamp supplies the light to the panel;
- wherein the display chip generates the synchronization signal at a predetermined time of the display cycle.
1 more element
Dependencies are inferred from the claim text.