Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-10-25
1998-12-22
Lefkowitz, Edward
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359154, 359157, 455450, 455463, 455464, 455500, 455509, H04B 1000
Patent
active
058525068
ABSTRACT:
A user headset is provided that is operable to contain an audio device (50) and a receiver (52). The receiver (52) is operable to receive both audio information on multiple channels and also data. The data is received in the form of pulse width modulated sync signals. The sync signals are operable to provide a synchronization signal for 3-D liquid crystal lenses (60). The data is encoded within the sync signal through pulse width modulation. The width of the pulse defines various commands. These various commands define the channel over which the audio is to be transmitted. These channels can either be user-defined or they can be a function of the transmitter. The transmitter includes an audio generator (42) for generating audio signals on multiple channels and also a data generator (40). These are modulated onto a broad band optical signal and transmitted via an IR data link. The system facilitates a walking tour by transmitting commands to the receiver that allow the receiver to lock onto a particular channel, there being select channels for a given zone. When walking from one zone to another zone, different channels in the next zone are automatically detected. The system detects the crossing of a boundary between zones by a change in sync frequency. Since the sync signals for both zones are synchronized, this facilitates a seamless transfer between adjacent zones. Each of the transmitters has multiple transmit channels, and each of the receivers having multiple receive channels. A sensor at each of the locations can sense the presence of the user, such that a program on one channel can be started at one time, the receiver locked on that channel and then a subsequent receiver commanded to go to a different channel to receive a program started at another time.
REFERENCES:
patent: 3898390 (1975-08-01), Wells et al.
patent: 4525861 (1985-07-01), Freeburg
patent: 4545071 (1985-10-01), Freeburg
patent: 5515378 (1996-05-01), Roy, III et al.
Edwards William Thomas
Eighmy Eugene Arnold
Testani Alan John
Howison Gregory M.
Lefkowitz Edward
Sonics Associates, Inc.
LandOfFree
Method and apparatus for controlling program start/stop operatio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling program start/stop operatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling program start/stop operatio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2052125