US5752169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit and transmitter/receiver
Assignee: Sony Corp
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Filing: 1996-03-11
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Granted: 1998-05-12
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Expires: 2016-03-11
Abstract
Abstract An integrated circuit comprises a variable frequency divider for setting a signal transmitting frequency in accordance with a frequency dividing ratio based on externally-provided data. A data converter converts the externally-provided data to a signal for transmission, and a switch selectively provides the externally-provided data to the variable frequency divider and the data converter. As a result, the number of terminals may be reduced, the IC package may be made more compact, the mounting surface area may be reduced, the equipment may be made smaller, and the interference of the data signal provided to the circuit for setting the frequency dividing ratio or the circuit for transmitting data is reduced.
Inventors
- 👤 Nobuo Hareyama
- 👤 Hiroshi Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:56
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04M; H04M1/00; H04M1/72; H04M1/725; H04M1/72502; H03; H03D; H03D7/00; H03D7/16; H03D7/161; H03D7/163; H03D7/165
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
An integrated circuit comprising frequency dividing ratio setting means for setting a transmission frequency dividing ratio and a receiving frequency dividing ratio based on externally provided data; first variable frequency dividing means for producing a signal transmitting frequency in accordance with said transmission frequency dividing ratio set by said frequency dividing ratio setting means; second variable frequency dividing means for producing a signal receiving frequency in accordance with said receiving frequency dividing ratio set by said frequency dividing ratio setting means; data converting means for converting said externally-provided data to a signal for transmission; and switching means for selectively providing said externally-provided data to one of said frequency dividing ratio setting means and said data converting means in response to an externally-provided control signal.
Claim 2
Dependent Claim
124 words
An integrated circuit comprising frequency dividing ratio setting means for setting a transmission frequency dividing ratio and a receiving frequency dividing ratio based on externally provided data; first variable frequency dividing means for producing a signal transmitting frequency in accordance with said transmission frequency dividing ratio set by said frequency dividing ratio setting means; second variable frequency dividing means for producing a signal receiving frequency in accordance with said receiving frequency dividing ratio set by said frequency dividing ratio setting means; data converting means for converting said externally-provided data to a signal for transmission; and switching means for selectively providing said externally-provided data to one of said frequency dividing ratio setting means and said data converting means in response to an externally-provided control signal.
Claim 3
Dependent Claim
20 words
An integrated circuit according to claim 1, wherein said first and second variable frequency dividing means include a phase-locked loop.
Claim 4
Dependent Claim
128 words
A transmitter/receiver including an integrated circuit, said integrated circuit comprising: frequency dividing ratio setting means for setting a transmission frequency dividing ratio and a receiving frequency dividing ratio based on externally-provided data; first variable frequency dividing means for producing a signal transmitting frequency in accordance with said transmission frequency dividing ratio set by said frequency dividing ratio setting means; second variable frequency dividing means for producing a signal receiving frequency in accordance with said receiving frequency dividing ratio set by said frequency dividing setting means; data converting means for converting said externally-provided data to a signal for transmission; and switching means for selectively providing said externally-provided data to one of said frequency dividing ratio setting means and said data converting means in response to an externally-provided control signal.
Claim 5
Dependent Claim
128 words
A transmitter/receiver including an integrated circuit, said integrated circuit comprising: frequency dividing ratio setting means for setting a transmission frequency dividing ratio and a receiving frequency dividing ratio based on externally-provided data; first variable frequency dividing means for producing a signal transmitting frequency in accordance with said transmission frequency dividing ratio set by said frequency dividing ratio setting means; second variable frequency dividing means for producing a signal receiving frequency in accordance with said receiving frequency dividing ratio set by said frequency dividing setting means; data converting means for converting said externally-provided data to a signal for transmission; and switching means for selectively providing said externally-provided data to one of said frequency dividing ratio setting means and said data converting means in response to an externally-provided control signal.
Claim 6
Dependent Claim
19 words
A transmitter/receiver according to claim 3, wherein said first and second variable frequency dividing means include a phase-locked loop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-11 | 2001-11-10 | 2002-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-11 | 2005-11-10 | 2006-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-11 | 2009-11-10 | 2010-05-12 | $7700.00 | Window Closed / Lapsed |