摘要:
A transmitter for transmitting audio signals via infrared light includes a first mounting board and a first plurality of narrow angle LED emitters and a first plurality of wide angle LED emitters attached to a front surface of the first mounting board. The first plurality of narrow angle LED emitters and first plurality of wide angle LED emitters are configured to emit a beam of infrared light having a wide portion and narrow portion, the wide portion being proximate the LED emitters and the narrow portion being distal to the LED emitters. An infrared audio system includes a transmitter and an expansion transmitter. The expansion transmitter may include a second plurality of narrow angle LED emitters and a second plurality of wide angle LED emitters. A method of making a transmitter includes attaching a plurality of narrow angle LED emitters and a plurality of wide angle LED emitters to a mounting board of a transmitter.
摘要:
The present invention pertains to a method for transmitting a plurality of audio channels over frequency modulated infrared bands, the method comprising periodically transmitting a configuration message and associated audio channel messages, said configuration message comprising an indication of the number of said audio channels, wherein the of audio channels is greater than 32 and the number of audio channels is coded in two non-adjacent fields. The invention also pertains to a system for receiving a plurality of audio channels over frequency modulated infrared bands as transmitted according to the method described above.
摘要:
The present invention pertains to a method for configuring an infrared audio transmission system comprising a signal generator and a plurality of radiators connected to said signal generator, the method comprising at at least one of said plurality of radiators: receiving (1050) a delay compensation configuration message; and storing (1060) an amount of delay to be introduced into subsequently radiated signals in accordance with the received delay compensation configuration message. The invention also pertains to a configuration node (100) for configuring radiators in such a system, configured to: transmit (1010) at least one test signal to the radiators; detect (1020) events triggered by the test signal; determine (1030) respective transmission delays between the node and the radiators on the basis of these reflections; and transmit (1040) a delay compensation configuration message over said network, the delays being included in the delay compensation configuration message.