Encoder for controlling measurements in the range of a few angst

Details Encoder for controlling measurements in the range of a few angst Encoder for controlling measurements in the range of a few angst

1995-05-08

1996-05-21

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

369 47, 250306, 250307, G11B 700

Patent

active

055196861

ABSTRACT:
An encoder includes an electrically conductive reference scale having surface steps formed at predetermined positions; an electrically conductive probe having a tip disposed opposed to the reference scale; wherein the reference scale and the probe are relatively movable in a direction different from the opposing direction of the tip of the probe and the reference scale; a portion for applying an electrical voltage to between the reference scale and the probe; a portion for detecting a change in a tunnel current between the reference scale and the probe, to between which the electric voltage is applied by the voltage applying portion at the time of the relative movement between the scale and the probe, the detecting portion detecting the change in the tunnel current when the probe passes a position opposed to a surface step of the reference scale; and portion for detecting the amount of the relative movement between the scale and probe, on the basis of the detection by the change detecting portion.

REFERENCES:
patent: 2715830 (1955-08-01), Lewis et al.
patent: 4343993 (1982-08-01), Binning et al.
patent: 4560924 (1985-12-01), Nordberg
patent: 4575822 (1986-03-01), Quate
patent: 4618767 (1986-08-01), Smith et al.
patent: 4677296 (1987-06-01), Lischke et al.
patent: 4724318 (1988-02-01), Binnig
patent: 4814622 (1989-03-01), Gregory et al.
patent: 4831614 (1989-05-01), Duerig et al.
patent: 4866271 (1989-09-01), Ono et al.
patent: 4877957 (1989-10-01), Okada et al.
patent: 4883959 (1989-11-01), Hosoki et al.
patent: 4907195 (1990-03-01), Kazan et al.
patent: 4916688 (1990-04-01), Foster et al.
patent: 4987303 (1991-01-01), Takase et al.
Patent Abstracts of Japan, vol. 12, No. 68, p. 672, Mar. 3, 1988.
IBM Journal of Research and Development, vol. 30, No. 5, Sep. 1986, pp. 460-465, "Mono-atomic tips for scanning tunneling microscopy", by Hans-Werner Fink.

Affiliated with

Also associated with

Rating

Encoder for controlling measurements in the range of a few angst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Encoder for controlling measurements in the range of a few angst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoder for controlling measurements in the range of a few angst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2044618