Patents

Redpine has focused on innovation through research in areas that include OFDM/OFDMA, MIMO, energy efficient wireless, wireless operation in dense environments, low power CMOS RF and high efficiency CMOS PAs.

Redpine has 46 awarded patents and over 100 in the pipeline.



# Patent Number Patent Name
1 7218896 Multiplexed wireless receiver and transmitter
2 7,295,144 Quantizer responsive to noise level for a wireless communications system
3 7,296,100 Packet buffer management apparatus and method
4 7,298,772 Packet detection, symbol timing, and coarse frequency estimation in an OFDM communications system
5 7,298,799 All-tap fractionally spaced, serial rake combiner apparatus and method
6 7,327,700 Flexible multi-channel multi-thread media access controller and physical layer interface for wireless networks
7 7,386,074 Digital automatic gain control method and apparatus
8 7,412,000 Maximum likelihood block decision feedback estimation for CCK demodulation apparatus and method
9 7,450,911 Multiplexed wireless receiver and transmitter
10 7,464,201 Packet buffer management apparatus and method
11 7,529,865 Packet buffer management apparatus and method
12 7,593,378 SINR-based powerdown apparatus and method for a wireless communications systems
13 7,593,459 Wireless link simulator
14 7,634,000 Noise estimator for a communications system
15 7,656,970 Apparatus for a wireless communications system using signal energy to control sample resolution and rate
16 7,657,683 Cross-thread interrupt controller for a multi-thread processor
17 7,761,688 Multiple thread in-order issue in-order completion DSP and micro-controller
18 7,844,007 Combined OFDMA preamble index identification, integer frequency offset estimation, and preamble CINR measurement
19 7,870,468 Reed-solomon decoder using a configurable arithmetic processor
20 7,907,555 RSSI-based powerdown apparatus and method for a wireless communications system
21 7,936,237 Multi-band transmit-receive switch for wireless transceiver
22 7,957,273 Packet re-transmission controller for block acknowledgement in a communications system
23 7,965,782 Reduced complexity maximum likelihood decoder for MIMO communications
24 7,986,738 Peak to average power ratio reduction apparatus and method for a wireless OFDM transmitter
25 8,005,179 Preamble detection in a multi-antenna MIMO 802.16e receiver
26 8,008,949 Clock selection for a communications processor having a sleep mode
27 8,0317,62 Stream weight estimation and compensation in SIMO/MIMO OFDM receivers
28 8,051,222 Concatenating secure digital input output (SDIO) interface
29 8,073,085 Analog to digital converter bit width and gain controller for a wireless receiver
30 8,077,591 Combined OFDMA preamble index identification, integer frequency offset estimation, and preamble CINR measurement
31 8,081,700 Power allocation method for MIMO transmit beamforming
32 8,090,035 Method for setting inter-packet gain
33 8,090,062 Process for packet detection
34 8,107,518 Stream weight estimation and compensation in SIMO/MIMO OFDM receivers
35 8,139,699 Process for preamble detection in a multi-stream 802.16E receiver
36 8,149,965 Level sensitive packet detector
37 8,149,966 Packet acquisition controller with signal strength threshold control for wireless MIMO receiver
38 8,151,155 Packet Re-transmission controller for block acknowledgement in a communications system
39 8,155,220 IIR transmit filter for OFDM baseband processor
40 8,160,190 IIR receive filter for OFDM baseband processor
41 8,161,205 Packet buffer management apparatus and method
42 8,165,251 Interpolation IIR filter for OFDM baseband processing
43 8,223,906 Interpolation IIR filter for OFDM baseband processing
44 8,245,063 Clock selection for a communications processor having a sleep mode
45 8,259,786 Channel estimation filter for OFDM receiver
46 8,332,451 Programmable CORDIC Processor