Just for fun, I generated a search for QCOM's patents and came up with some interesting results that amplify the fact that IDC's broadband CDMA efforts preceded and then became parallel to QCOM's narrowband CDMA effort.
Here is the list again of Donald L. Schillings 14 patents still not listed under IDC:
Who is Donald L. Schilling again?
Donald L. Schilling was Chairman of the Board of Directors of Golden Bridge Technology,Inc. from 1996-April 1998 where as Chairman of TIA 46.1, he led the development and standardization of W-CDMA. Prior to that he was Vice Chairman of the Board, Chief Executive Officer and President of InterDigital Communications Corporation
....where he invented and led the development of Broadband-CDMA, and began the field of PCS in the U.S.A. (Wideband-CDMA, the generic form of B-CDMA, is being standardized for 3G systems by TIA and ITU.)......
Dr. Schilling is Professor Emeritus of Electrical Engineering at the City College of New York. Dr. Schilling retired, in May 1992, as the Herbert G. Kayser Distinguished Professor of Electrical Engineering at the City College of the City University of New York. Dr. Schilling has made many notable contributions in WCDMA, spread spectrum communications systems, FM, phase-locked systems, meteor burst communications systems and HF systems.....
....His design of an adaptive delta modulator is used on the Space Shuttle.....
....Dr. Schilling has co-authored twelve textbooks, more than 200 papers and holds more than 50 patents, in telecommunications and electronics. In 1998, Dr. Schilling was awarded IEEE COMSOC's prestigious ARMSTRONG Award for his contributions to CDMA and to the wireless world it is creating
Message 12793426
Message 12794372
Message 12804762
1) 5,351,269 Overlaying spread spectrum CDMA personal communications system (September 27, 1994)
2) 5,185,762 Spread spectrum microwave overlay with notch filter (February 9, 1993)
3) 5,179,572 Spread spectrum conference calling system and method (January 12, 1993)
4) 5,179,571 Spread spectrum cellular handoff apparatus and method (January 12, 1993)
5) 5,166,951 High capacity spread spectrum channel
(November 24, 1992)
6) 5,161,168 Spread spectrum CDMA communications system microwave overlay (November 11, 1992)
7) 5,093,840 Adaptive power control for a spread spectrum transmitter (March 3, 1992)
8) 5,081,643 Spread spectrum multipath receiver apparatus and method (January 14, 1992)
9) 4,849,976 PASM and TASM forward error correction and detection code method and apparatus (July 18, 1989)
10) 4,849,974 PASM and TASM forward error correction and detection code method and apparatus (July 18, 1989)
11) 4,847,842 SM codec method and apparatus (July 11, 1989)
12) 4,796,260 Schilling-Manela forward error correction and detection code method and apparatus (January 3, 1989)
13) 4,764,734 Class SM power amplifier (August 16, 1988)
14) 4,748,421 Enhanced class SM power amplifier (May 31, 1988)
A) I came up with 12 patents issued to QCOM from 1989 to 3/3/1992 (5093840) -- the patent that QCOM licensed with the earliest issue date.
578 5,056,109 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system (10/8/91)
579 5,028,887 Direct digital synthesizer driven phase lock loop frequency synthesizer with hard limiter
580 5,021,891 Adaptive block size image compression method and system
581 5,017,926 Dual satellite navigation system
582 4,979,170 Alternating sequential half duplex communication system
583 4,965,533 Direct digital synthesizer driven phase lock loop frequency synthesizer
584 4,928,274 Multiplexed address control in a TDM communication system
585 4,926,130 Synchronous up-conversion direct digital synthesizer
586 4,905,177 High resolution phase to sine amplitude conversion
587 4,901,307 Spread spectrum multiple access communication system using satellite or terrestrial repeaters
588 4,901,265 Pseudorandom dither for frequency synthesis noise
589 4,876,554 Pillbox antenna and antenna assembly(10/24/89)
B) I came up with 21 patents from 3/3/92 (5093840) to 7/13/93 (5228056) -- the patent that QCOM licensed with the latest issue date.
557 5,228,054 Power-of-two length pseudo-noise sequence generator with fast offset adjustment (7/13/93)
558 5,218,618 Cellular telephone service using spread spectrum transmission
559 5,216,389 Temperature compensation of a crystal reference using direct digital synthesis
560 5,195,091 Adaptive synchronization arrangement
561 5,195,090 Wireless access telephone-to-telephone network interface architecture
562 5,193,094 Method and apparatus for generating super-orthogonal convolutional codes and the decoding thereof
563 5,184,347 Adaptive synchronization arrangement
564 5,179,348 Progression of states numerically controlled oscillator
565 5,175,626 Apparatus providing a clock signal for a digital television receiver in response to a channel change
566 5,164,958 Spread spectrum cellular handoff method
567 5,162,763 Single sideband modulator for translating baseband signals to radio frequency in single stage
568 5,150,378 Method and apparatus for coherent communications in non-coherent frequency-hopping system
569 5,142,278 Current carrier tractor-trailer data link
570 5,128,623 Direct digital synthesizer/direct analog synthesizer hybrid frequency synthesizer
571 5,126,748 Dual satellite navigation system and method
572 5,109,390 Diversity receiver in a CDMA cellular telephone system
573 5,107,345 Adaptive block size image compression method and system
574 5,107,225 High dynamic range closed loop automatic gain control circuit
575 5,103,459 System and method for generating signal waveforms in a CDMA cellular telephone system
576 5,101,501 Method and system for providing a soft handoff in communications in a CDMA cellular telephone system
577 5,099,204 Linear gain control amplifier (3/24/92)
The parallel CDMA efforts at IDC and QCOM indicate, at the very least, that IDC broadband CDMA is a viable alternative to QCOM's narrowband CDMA. The one hundred billion dollar question is which combination will manufacturers and carriers choose to adopt during the transition from 2g to 3g. According to Darrell, there are at least 10 other vendors with essential CDMA IPRs, as confirmed in part by the Philips-QCOM licensing agreement disclosed in the Neopoint prospectus. |
