Color television display system
Picture projecting apparatus for a projection display system and the method thereof
DMD architecture and timing for use in a pulse width modulated display system
Dynamic memory allocation for frame buffer for spatial light modulator
Method and apparatus for sequential color imaging Patent #: 5448314
ApplicationNo. 510027 filed on 08/01/1995
US Classes:348/743, With moving color filters345/547, Memory for storing video data348/742, Color sequential348/744, Projection device348/756With optical element
ExaminersPrimary: Peng, John K.
Assistant: Kovacs, Peter
Attorney, Agent or Firm
Foreign Patent References
International ClassH04N 009/12
AbstractA SLM-based projection display system (10) samples and processes video data for delivery to a spatial light modulator (SLM) (13c), and uses a color wheel (14a) to color the SLM-generated images. A frame memory (13b) provides data to the SLM (13c) and is managed so that, if the phase of the incoming video signal changes, a desired phase relationship between the color wheel position and the data available to the SLM (13c) can be maintained. Also, a motor control unit (15a) uses a horizontal sync signal to generate a drive signal for the color wheel motor (16a), which limits the transient time during phase-changing events, and which provides a means for adjusting the phase of the drive signal.