Patent US5123091A successfully refreshed from Google Patents.
US5123091A
Expired / Lapsed
US
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Data processing system and method for packetizing data from peripherals
Assignee: Hewlett Packard Development Co LP
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Filing: 1987-08-13
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Granted: 1992-06-16
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Expires: 2007-08-13
Abstract
Abstract In a system including a host and a peripheral repeater having at least one peripheral coupled thereto, data from the peripheral is packetized at the peripheral repeater and sent to the host. This is done by establishing a baud rate for the peripheral, accumulating messages from the peripheral into packets and terminating and transmitting a packet. The terminating and transmitting is performed if a predetermined time based on the baud rate passes without receiving a byte from the peripheral.
Inventors
- 👤 Bruce E. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:29
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
In a system including a host, a peripheral repeater and at least one peripheral, a method of packetizing data in said peripheral repeater and sending it to said host, comprising: establishing a message byte length; accumulating characters in messages from a given peripheral into packets; and terminating and sending a packet when its size is equal to said message byte length; wherein each peripheral has an established baud rate, and further including terminating a packet and transmitting the packet after having received at least one byte if a predetermined time, based on said baud rate, passes from the time a last byte was received without receiving a subsequent byte from the peripheral.
Claim 2
Dependent Claim
112 words
In a system including a host, a peripheral repeater and at least one peripheral, a method of packetizing data in said peripheral repeater and sending it to said host, comprising: establishing a message byte length; accumulating characters in messages from a given peripheral into packets; and terminating and sending a packet when its size is equal to said message byte length; wherein each peripheral has an established baud rate, and further including terminating a packet and transmitting the packet after having received at least one byte if a predetermined time, based on said baud rate, passes from the time a last byte was received without receiving a subsequent byte from the peripheral.
Claim 3
Dependent Claim
24 words
The method according to claim 1 wherein said time is approximately equal to the transmission time required to transmit two characters at said rate.
Claim 4
Dependent Claim
27 words
The method according to claim 2 wherein the baud rate of said peripheral is changeable and further including adjusting said time when the baud rate is changed.
Claim 5
Dependent Claim
106 words
In a system including a host and a peripheral repeater having at least one peripheral coupled thereto, a method of packetizing data from said peripheral at said peripheral repeater and sending it to said host comprising: a) establishing a baud rate for said peripheral; b) accumulating bytes in messages from said peripheral into packets at said peripheral repeater; and c) terminating a packet and transmitting said packet to the host after said peripheral repeater has received at least one byte is a predetermined time based on said baud rate passes from the time a last byte was received without receiving a subsequent byte from the peripheral.
Claim 6
Dependent Claim
106 words
In a system including a host and a peripheral repeater having at least one peripheral coupled thereto, a method of packetizing data from said peripheral at said peripheral repeater and sending it to said host comprising: a) establishing a baud rate for said peripheral; b) accumulating bytes in messages from said peripheral into packets at said peripheral repeater; and c) terminating a packet and transmitting said packet to the host after said peripheral repeater has received at least one byte is a predetermined time based on said baud rate passes from the time a last byte was received without receiving a subsequent byte from the peripheral.
Claim 7
Dependent Claim
24 words
The method according to claim 4 wherein said time is approximately equal to the transmission time required to transmit two characters at said rate.
Claim 8
Dependent Claim
27 words
The method according to claim 4 wherein the baud rate of said peripheral is changeable and further including adjusting said time when the baud rate is changed.
Claim 9
Dependent Claim
30 words
The method according to claim 4 and further including: a) establishing a message byte length; and b) terminating and sending a packet when its size is equal to said length.
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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) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |