US5815525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-band, multi-mode spread-spectrum communication system
Assignee: Intel Corp
•
Filing: 1996-03-27
•
Granted: 1998-09-29
•
Expires: 2016-03-27
Abstract
Abstract A technique for spread-spectrum communication which uses more than one mode and more than one frequency band. Selectable modes include narrowband mode and spread-spectrum mode, or cellular mode and microcellular mode. Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850-1990 MHz, and 2.4-2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of communication with a private access network.
Inventors
- 👤 Douglas G. Smith
- 👤 Robert C. Dixon
- 👤 Jeffrey S. Vanderpool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:27
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/005; H04B1/0053; H04B1/0057; H04B1/006; H04B1/38; H04B1/40; H04B1/403; H04B1/406; H04B1/69; H04B1/707; H04B7/00; H04B7/24; H04B7/26; H04B7/2628; H04B7/2634; H04L; H04L1/00; H04L1/0001; H04B2201/00; H04B2201/69; H04B2201/707; H04B2201/70707; H04B2201/7071; H04L1/0002
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
90 words
A transmitter comprising: a mode controller for selecting between a first fixed mode and a second fixed mode, a spread-spectrum modulator, responsive to said first fixed mode of said mode controller, for generating a spread-spectrum signal, and a narrowband modulator, responsive to said second fixed mode of said mode controller, for generating a narrowband signal wherein one of said narrowband signal and said spread spectrum signal is transmitted in a cellular region, and the other of said narrowband signal and said spread spectrum signal is transmitted in a microcellular region.
Claim 2
Dependent Claim
90 words
A transmitter comprising: a mode controller for selecting between a first fixed mode and a second fixed mode, a spread-spectrum modulator, responsive to said first fixed mode of said mode controller, for generating a spread-spectrum signal, and a narrowband modulator, responsive to said second fixed mode of said mode controller, for generating a narrowband signal wherein one of said narrowband signal and said spread spectrum signal is transmitted in a cellular region, and the other of said narrowband signal and said spread spectrum signal is transmitted in a microcellular region.
Claim 3
Dependent Claim
10 words
The transmitter of claim 1 further comprising a cordless telephone.
Claim 4
Dependent Claim
20 words
The transmitter of claim 1 wherein said spread-spectrum signal and said narrowband signal occupy at least partially overlapping frequency bands.
Claim 5
Dependent Claim
19 words
The transmitter of claim 1 wherein said spread-spectrum signal and said narrowband signal occupy separate and distinct frequency bands.
Claim 6
Dependent Claim
10 words
The transmitter of claim 1 further comprising a paging unit.
Claim 7
Dependent Claim
13 words
The transmitter of claim 1 further comprising an antenna shared with a receiver.
Claim 8
Dependent Claim
35 words
The transmitter of claim 1 further comprising an adjustable bandpass filter responsive to said first fixed mode for passing said narrowband modulated signal, and responsive to said second fixed mode for passing said spread-spectrum signal.
Claim 9
Dependent Claim
24 words
The transmitter of claim 1 further comprising a bandpass filter having a bandwidth capable of passing both said spread-spectrum signal and said narrowband signal.
Claim 10
Dependent Claim
14 words
The transmitter of claim 1 further comprising a means for generating a carrier signal.
Claim 11
Dependent Claim
18 words
The transmitter of claim 9 wherein said means for generating a carrier signal comprises a tunable frequency synthesizer.
Claim 12
Dependent Claim
44 words
The transmitter of claim 4 further comprising a power amplifier coupled to said spread-spectrum modulator and said narrowband modulator, wherein said power amplifier may be adjusted to operate in the frequency band corresponding to either said first fixed mode or said second fixed mode.
Claim 13
Dependent Claim
93 words
A receiver comprising: a mode controller for selecting between a first fixed mode and a second fixed mode, a spread-spectrum demodulator, responsive to said first fixed mode of said mode controller, for demodulating a received spread-spectrum signal, and a narrowband demodulator, responsive to said second fixed mode of said mode controller, for demodulating a received narrowband signal wherein one of said received spread-spectrum signal and said received narrowband signal is received in a cellular region and the other of said received narrowband signal and received spread-spectrum signal is received in a microcellular region.
Claim 14
Dependent Claim
93 words
A receiver comprising: a mode controller for selecting between a first fixed mode and a second fixed mode, a spread-spectrum demodulator, responsive to said first fixed mode of said mode controller, for demodulating a received spread-spectrum signal, and a narrowband demodulator, responsive to said second fixed mode of said mode controller, for demodulating a received narrowband signal wherein one of said received spread-spectrum signal and said received narrowband signal is received in a cellular region and the other of said received narrowband signal and received spread-spectrum signal is received in a microcellular region.
Claim 15
Dependent Claim
16 words
The receiver of claim 12 further comprising a band pass filter for filtering a received signal.
Claim 16
Dependent Claim
11 words
The receiver of claim 13 wherein said bandpass filter is adjustable.
Claim 17
Dependent Claim
14 words
The receiver of claim 14 wherein said bandpass filter is shared with a transmitter.
Claim 18
Dependent Claim
20 words
The receiver of claim 12 further comprising a frequency converter for generating an intermediate frequency signal from a received signal.
Claim 19
Dependent Claim
31 words
The receiver of claim 16 further comprising a frequency synthesizer, wherein said frequency converter generates said intermediate frequency signal by multiplying said received signal with an output of said frequency synthesizer.
Claim 20
Dependent Claim
10 words
The receiver of claim 12 further comprising a paging unit.
Claim 21
Dependent Claim
54 words
A transmitter comprising a mode controller for selecting from among a plurality of modulators, at least one of said modulators being a narrowband modulator and at least one of said modulators being a spread-spectrum modulator, wherein the narrowband modulator operates within a cellular system and the spread spectrum modulator operates within a microcellular system.
Claim 22
Dependent Claim
54 words
A transmitter comprising a mode controller for selecting from among a plurality of modulators, at least one of said modulators being a narrowband modulator and at least one of said modulators being a spread-spectrum modulator, wherein the narrowband modulator operates within a cellular system and the spread spectrum modulator operates within a microcellular system.
Claim 23
Dependent Claim
74 words
A transmitter comprising a switch for selecting between two modes, means responsive to a first of said two modes for transmitting in a cellular region, means responsive to a second of said two modes for transmitting in a microcellular region, wherein said means for transmitting in a cellular region further comprises means for generating a narrowband signal and said means for transmitting in a microcellular region further comprises means for generating a spread-spectrum signal.
Claim 24
Dependent Claim
74 words
A transmitter comprising a switch for selecting between two modes, means responsive to a first of said two modes for transmitting in a cellular region, means responsive to a second of said two modes for transmitting in a microcellular region, wherein said means for transmitting in a cellular region further comprises means for generating a narrowband signal and said means for transmitting in a microcellular region further comprises means for generating a spread-spectrum signal.
Claim 25
Dependent Claim
82 words
A telephone comprising a switch for selecting between a first mode and a second mode, and a transmitter for transmitting in a cellular region in response to selecting said first mode and for transmitting in a microcellular region in response to selecting said second mode, wherein said transmitter transmits a spread-spectrum signal in at least one of said first mode and said second mode and said transmitter transmits a narrowband signal in the other of said first mode and said second mode.
Claim 26
Dependent Claim
82 words
A telephone comprising a switch for selecting between a first mode and a second mode, and a transmitter for transmitting in a cellular region in response to selecting said first mode and for transmitting in a microcellular region in response to selecting said second mode, wherein said transmitter transmits a spread-spectrum signal in at least one of said first mode and said second mode and said transmitter transmits a narrowband signal in the other of said first mode and said second mode.
Claim 27
Dependent Claim
37 words
The telephone of claim 21, wherein the frequency band used by said transmitter when transmitting in said cellular region and the frequency band used by said transmitter when transmitting in said microcellular region at least partially overlap.
Claim 28
Dependent Claim
37 words
The telephone of claim 21, wherein the frequency band used by said transmitter when transmitting in said cellular region and the frequency band used by said transmitter when transmitting in said microcellular region are separate and distinct.
Claim 29
Dependent Claim
22 words
The telephone of claim 21, further comprising an adjustable bandpass filter capable of passing either a spread-spectrum signal or a narrowband signal.
Claim 30
Dependent Claim
100 words
A receiver comprising a mode controller for selecting between narrowband modulation and spread-spectrum modulation, an adjustable bandpass filter, responsive to a narrowband modulation setting of said mode controller for passing a narrowband signal, and responsive to a spread-spectrum setting of said mode controller for passing a spread-spectrum signal, a spread-spectrum demodulator for demodulating said spread-spectrum signal, and a narrowband demodulator for demodulating said narrowband signal wherein one of said narrowband signal and said spread spectrum signal is received in a microcellular region and the other of said narrowband signal and said spread spectrum signal is received in a cellular region.
Claim 31
Dependent Claim
100 words
A receiver comprising a mode controller for selecting between narrowband modulation and spread-spectrum modulation, an adjustable bandpass filter, responsive to a narrowband modulation setting of said mode controller for passing a narrowband signal, and responsive to a spread-spectrum setting of said mode controller for passing a spread-spectrum signal, a spread-spectrum demodulator for demodulating said spread-spectrum signal, and a narrowband demodulator for demodulating said narrowband signal wherein one of said narrowband signal and said spread spectrum signal is received in a microcellular region and the other of said narrowband signal and said spread spectrum signal is received in a cellular region.
Claim 32
Dependent Claim
118 words
A cordless telephone comprising a mode controller for selecting between a first mode and a second mode, a transmitter, responsive to said first mode of said mode controller for generating a spread-spectrum signal, and responsive to said second mode of said mode controller for generating a narrowband signal, and a receiver, responsive to said first mode of said mode controller for receiving a spread-spectrum signal, and responsive to said second mode of said mode controller for receiving a narrowband signal wherein one of the spread spectrum signal and the narrowband signal is transmitted and received in a cellular region and the other of the spread spectrum and the narrowband signal is transmitted and received in a microcellular region.
Claim 33
Dependent Claim
118 words
A cordless telephone comprising a mode controller for selecting between a first mode and a second mode, a transmitter, responsive to said first mode of said mode controller for generating a spread-spectrum signal, and responsive to said second mode of said mode controller for generating a narrowband signal, and a receiver, responsive to said first mode of said mode controller for receiving a spread-spectrum signal, and responsive to said second mode of said mode controller for receiving a narrowband signal wherein one of the spread spectrum signal and the narrowband signal is transmitted and received in a cellular region and the other of the spread spectrum and the narrowband signal is transmitted and received in a microcellular region.
Claim 34
Independent Claim
67 words
A method for communication comprising the steps of selecting between a narrowband mode and a spread-spectrum mode, generating, in response to said narrowband mode, a narrowband signal, generating, in response to said spread-spectrum mode, a spread-spectrum signal, transmitting one of said narrowband signal and said spread-spectrum signal in a cellular region, and transmitting the other of said narrowband signal and said spread-spectrum signal in a microcellular region.
Claim 35
Independent Claim
67 words
A method for communication comprising the steps of selecting between a narrowband mode and a spread-spectrum mode, generating, in response to said narrowband mode, a narrowband signal, generating, in response to said spread-spectrum mode, a spread-spectrum signal, transmitting one of said narrowband signal and said spread-spectrum signal in a cellular region, and transmitting the other of said narrowband signal and said spread-spectrum signal in a microcellular region.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-28 | 2002-03-30 | 2002-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-28 | 2006-03-30 | 2006-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-28 | 2010-03-30 | 2010-09-29 | $7700.00 | Window Closed / Lapsed |