Title:
【発明の名称】改良ヘッドアップディスプレイシステム
Document Type and Number:
Japanese Patent JP3013198
Kind Code:
B2
Abstract:
PCT No. PCT/GB90/01107 Sec. 371 Date Feb. 17, 1993 Sec. 102(e) Date Feb. 17, 1993 PCT Filed Jul. 19, 1990 PCT Pub. No. WO92/01906 PCT Pub. Date Feb. 6, 1992.A head-up display system includes means generating a pitch ladder pattern having pitch bars which are straight lines with a central gap, the pitch bars representing climb angles being solid lines and the pitch bars representing dive angles being dashed lines, the pattern having a scale factor which is unity in a central region and which increases smoothly from the central region towards the extremes of the pattern, characterised in that: a) the central bar representing level flight is considerably longer than any other bar, and the lengths of the bars decrease according to a relationship with their displacement from the central bar; b) the zenith or 90 DEG climb angle is indicated by a distinctive star symbol and the nadir or 90 DEG dive angle is indicated by a distinctive earth symbol, and c) the pattern has two inner regions on either side of the central region, and two outer regions between the inner regions and zenith and nadir respectively, and the graduation intervals in the outer regions are considerably greater than the graduation intervals in the inner regions, so that the first graduation interval in each outer region is considerably wider than the last graduation interval in each inner region, thus providing distinctive indications of the angles at which the inner regions end and the outer regions begin.
Inventors:
Penwill, Jiyoung Cliffaud
Application Number:
JP51003990A
Publication Date:
February 28, 2000
Filing Date:
July 19, 1990
Export Citation:
Assignee:
Great Britain
International Classes:
B64D45/08; G01C23/00; G02B27/01; G02B27/32; (IPC1-7): G01C23/00; B64D45/08
Domestic Patent References:
| JP1295111A |
Other References:
【文献】英国公開2179612(GB,A)
【文献】国際公開86/6160(WO,A1)
【文献】国際公開86/6160(WO,A1)
Attorney, Agent or Firm:
Yoshio Kawaguchi (3 outside)