US Patent No: 6,431,451
Number of patents in Portfolio can not be more than 2000
Hand-held data capture system with interchangeable modules
Stats
-
Aug 13, 2002
Issued date -
Jun 30, 2000
filing date -
09/609,078
serial no -
Expired
status
Importance
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Abstract
A portable, hand-held data terminal of modular structure includes a base module with a keyboard and a display screen. A data and communications module may be selected from a number of different data and communications modules, each having different types of data communications transceivers, or including in addition data collection devices, such as shelf label readers or bar code readers. The base module includes a microprocessor-controlled data communications and control interface having a predetermined protocol. To adapt the various types of data and communications modules for selection of any one thereof to become attached to the base module and function therewith, each of the data and communications modules includes a microprocessor operable to function as an emulator to interact with the microprocessor of the base module and communicate with the microprocessor of the base module in accordance with the protocol of the data communications and control interface of the base module.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,052,020 Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions | 30 | 1990 | |
| 5,218,187 Hand-held data capture system with interchangeable modules | 110 | 1991 | |
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| 5,567,925 Hand-held data capture system with interchangeable modules | 10 | 1994 | |
| 6,014,705 Modular portable data processing terminal having a higher layer and lower layer partitioned communication protocol stack for use in a radio frequency communications network | 50 | 1997 | |
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| 4,519,068 Method and apparatus for communicating variable length messages between a primary station and remote stations of a data communications system | 123 | 1983 | |
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| 4,890,832 Compact electronic apparatus with removable processing units | 150 | 1988 | |
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| 5,170,494 Two piece radio telephone | 37 | 1991 | |
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| 5,839,051 Host radio telephone to directly access a handset NAM through a connecter without requiring the handset controller to be employed | 37 | 1997 | |
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Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 13, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |