Patent ID: 6333922
Filing Date: 2001-12-25
Classification: H04B

Abstract:
Apparatus for switching symbols in parallel broadcast channels transmitted as respective frequency division multiple access carriers to time division multiplexed data streams comprising:first and second ping-pong buffers, said first ping-pong buffer being configured to store a first plurality of said symbols in said parallel broadcast channels therein, said second ping-pong buffer being operable to store a second plurality of said symbols in said parallel broadcast channels therein, said second plurality of said symbols in said parallel broadcast channels having arrived at said second ping-pong buffer prior to the arrival of said first plurality of said symbols in said parallel broadcast channels at said first ping-pong buffer;a routing switch connected to the outputs of said first and second ping-pong buffers; anda first frame assembler connected to said routing switch, said routing switch being operable to control the writing of the contents of said second ping-pong buffer to said first frame assembler.