GB2005117A - Mobile data terminal - Google Patents

Mobile data terminal

Info

Publication number
GB2005117A
GB2005117A GB7838197A GB7838197A GB2005117A GB 2005117 A GB2005117 A GB 2005117A GB 7838197 A GB7838197 A GB 7838197A GB 7838197 A GB7838197 A GB 7838197A GB 2005117 A GB2005117 A GB 2005117A
Authority
GB
United Kingdom
Prior art keywords
messages
subsystem
well
microcomputer
mobile data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7838197A
Other versions
GB2005117B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of GB2005117A publication Critical patent/GB2005117A/en
Application granted granted Critical
Publication of GB2005117B publication Critical patent/GB2005117B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Abstract

A programmable mobile data terminal system sends and receives predeterminedly formatted digitally encoded messages. A keyboard subsystem (23, 52) and a character display subsystem (62, 60) are controlled by a programmable microcomputer subsystem (10) which also processes received and transmitted messages. A transmit and receive system clock (41) interrupts the operation of the microcomputer (10) to process messages. The messages include a cyclical redundant check byte as well as a control number byte. Characters which are not editable blink. A terminal status display line is provided and a message received character is also provided. The system sets the system clock period to be the same for all data rates. Automatic restart of the system is provided as well as a means for detecting and generating a pseudo-random message preamble. Cursor positioning, memory interchange, and display keys are provided. Receipt and acknowledgement of various types of messages is also provided. <IMAGE>
GB7838197A 1977-09-27 1978-09-26 Mobile data terminal Expired GB2005117B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83725577A 1977-09-27 1977-09-27

Publications (2)

Publication Number Publication Date
GB2005117A true GB2005117A (en) 1979-04-11
GB2005117B GB2005117B (en) 1982-02-24

Family

ID=25273963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7838197A Expired GB2005117B (en) 1977-09-27 1978-09-26 Mobile data terminal

Country Status (12)

Country Link
JP (2) JPS5474304A (en)
BR (1) BR7806366A (en)
CA (1) CA1124880A (en)
DE (1) DE2842068A1 (en)
DK (1) DK425678A (en)
FR (1) FR2425108B1 (en)
GB (1) GB2005117B (en)
IL (1) IL55390A (en)
MX (1) MX148598A (en)
NL (1) NL7809722A (en)
SE (1) SE439867B (en)
ZA (1) ZA784674B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0115499A1 (en) * 1982-07-28 1984-08-15 Motorola Inc Selective call paging and priority signalling system.
EP0116064A1 (en) * 1982-07-28 1984-08-22 Motorola, Inc. General purpose data control terminal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55174128U (en) * 1979-05-31 1980-12-13

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686637A (en) * 1970-09-14 1972-08-22 Ncr Co Retail terminal
GB1446643A (en) * 1973-09-11 1976-08-18 Computek Inc Computer display terminals
DE2455174A1 (en) * 1973-11-21 1975-05-22 Termiflex Corp INPUT / OUTPUT DEVICE FOR DATA EXCHANGE WITH DATA PROCESSING DEVICES
US3906445A (en) * 1974-10-21 1975-09-16 Motorola Inc Alphanumeric terminal for a communications system
JPS5193111A (en) * 1975-02-13 1976-08-16
US3973244A (en) * 1975-02-27 1976-08-03 Zentec Corporation Microcomputer terminal system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0115499A1 (en) * 1982-07-28 1984-08-15 Motorola Inc Selective call paging and priority signalling system.
EP0116064A1 (en) * 1982-07-28 1984-08-22 Motorola, Inc. General purpose data control terminal
EP0116064A4 (en) * 1982-07-28 1985-02-18 Motorola Inc General purpose data control terminal.
EP0115499A4 (en) * 1982-07-28 1985-02-28 Motorola Inc Selective call paging and priority signalling system.

Also Published As

Publication number Publication date
SE7810125L (en) 1979-03-28
NL7809722A (en) 1979-03-29
CA1124880A (en) 1982-06-01
JPS6368236U (en) 1988-05-09
SE439867B (en) 1985-07-01
FR2425108A1 (en) 1979-11-30
IL55390A (en) 1981-10-30
MX148598A (en) 1983-05-16
FR2425108B1 (en) 1986-04-11
JPS5474304A (en) 1979-06-14
IL55390A0 (en) 1978-10-31
DK425678A (en) 1979-03-28
GB2005117B (en) 1982-02-24
DE2842068A1 (en) 1979-04-05
ZA784674B (en) 1979-08-29
BR7806366A (en) 1979-05-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee