GB2013025A - Combined circular and rectangular matrix display - Google Patents

Combined circular and rectangular matrix display

Info

Publication number
GB2013025A
GB2013025A GB7901420A GB7901420A GB2013025A GB 2013025 A GB2013025 A GB 2013025A GB 7901420 A GB7901420 A GB 7901420A GB 7901420 A GB7901420 A GB 7901420A GB 2013025 A GB2013025 A GB 2013025A
Authority
GB
United Kingdom
Prior art keywords
circular array
cells
conductors
matrix display
radial
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
GB7901420A
Other versions
GB2013025B (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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB7901420A priority Critical patent/GB2013025B/en
Publication of GB2013025A publication Critical patent/GB2013025A/en
Application granted granted Critical
Publication of GB2013025B publication Critical patent/GB2013025B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
    • H01J17/492—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes
    • H01J17/494—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes using sequential transfer of the discharges, e.g. of the self-scan type

Landscapes

  • Gas-Filled Discharge Tubes (AREA)

Abstract

A d.c. gas discharge display panel consists of a rectangular array 30 of discharge cells for displaying alphanumeric characters surrounded by a circular array. The two arrays share one common set of (radial) conductors 31 driven via resistors 15 from a concentric bus and addressed by reducing their potential in turn by glow transfer cells with electrodes 22 extending around the circular array and connected cyclically 25-27. The other conductors 31, 32 of the arrays drive the cells on them via individual resistors 18; those of the circular array may be commoned 33 to result in a radial pointer whose position around the circle can be changed. <IMAGE>
GB7901420A 1978-01-18 1979-01-15 Gas discharge display panel Expired GB2013025B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7901420A GB2013025B (en) 1978-01-18 1979-01-15 Gas discharge display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB192978 1978-01-18
GB7901420A GB2013025B (en) 1978-01-18 1979-01-15 Gas discharge display panel

Publications (2)

Publication Number Publication Date
GB2013025A true GB2013025A (en) 1979-08-01
GB2013025B GB2013025B (en) 1982-02-10

Family

ID=26237078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7901420A Expired GB2013025B (en) 1978-01-18 1979-01-15 Gas discharge display panel

Country Status (1)

Country Link
GB (1) GB2013025B (en)

Also Published As

Publication number Publication date
GB2013025B (en) 1982-02-10

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Legal Events

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