Patent EP0307210A2 successfully refreshed from Google Patents.
EP0307210A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Memory writing apparatus
Assignee: Seiko Instruments Inc
•
Filing: 1988-09-09
•
Granted: —
•
Expires: 2008-09-09
Abstract
Abstract A memory writing apparatus comprises an input section for writing data in a memory (5), the input section comprising at least one needle (8) having a fine tip portion. A control means controls the input section, the control means comprising positioning means (3, 11, 25) for positioning the tip portion of the needle close to the surface of the memory (5), scanning means (13) for scanning the tip portion of the needle over the surface of the memory and distance controlling means (11, 12) for controlling a distance between the tip portion of the needle and the surface of the memory whilst the tip portion of the needle scans thereover.
Inventors
- 👤 Manabu Ooumi
- 👤 Toshihiko Sakuhara
- 👤 Tatsuaki Ataka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 08:07
CPC Classifications
B; B82; B82Y; B82Y10/00; G; G11; G11B; G11B9/00; G11B9/12; G11B9/14; G11B21/00; G11B21/16; G11B21/20; G11B21/21; G11B9/1463; G11B9/149
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A memory writing apparatus characterised by comprising: an input section writing data in a memory (5), said input section comprising at least one needle (8, 200) having a fine tip portion; and control means for controlling the input section, said control means comprising positioning means (3, 11, 25) for positioning the tip portion of the needle close to the surface of the memory (5), means (13) for scanning the tip portion of the needle over the surface of the memory and distance controlling means (11, 12) for controlling a distance between the tip portion of the needle and the surface of the memory whilst the tip portion of the needle scans thereover.
Claim 2
Dependent Claim
112 words
A memory writing apparatus characterised by comprising: an input section writing data in a memory (5), said input section comprising at least one needle (8, 200) having a fine tip portion; and control means for controlling the input section, said control means comprising positioning means (3, 11, 25) for positioning the tip portion of the needle close to the surface of the memory (5), means (13) for scanning the tip portion of the needle over the surface of the memory and distance controlling means (11, 12) for controlling a distance between the tip portion of the needle and the surface of the memory whilst the tip portion of the needle scans thereover.
Claim 3
Dependent Claim
39 words
A memory writing apparatus as claimed in claim 1 characterised in that the distance between the tip portion of the needle (8, 200) and the surface of the memory (5) is maintained so as to cause a tunnel effect.
Claim 4
Dependent Claim
24 words
A memory writing apparatus as claimed in claim 1 or 2 characterised in that the needle (200) is manufactured by using semi-conductor processing techniques.
Claim 5
Dependent Claim
22 words
A memory writing apparatus as claimed in any preceding claim characterised in that a dielectric material is used as the memory (5).
Claim 6
Dependent Claim
25 words
A memory writing apparatus as claimed in any of claims 1 to 3 characterised in that a polar compound is used as the memory (5).
Claim 7
Dependent Claim
26 words
A memory writing apparatus as claimed in any of claims 1 to 3 characterised in that a liquid crystal compound is used as the memory (5).
Claim 8
Dependent Claim
25 words
A memory writing apparatus as claimed in any of claims 1 to 3 characterised in that a multi-valent element is used as the memory (5).
Claim 9
Dependent Claim
25 words
A memory writing apparatus as claimed in any of claims 1 to 3 characterised in that an electro-chromic material is used as the memory (5).
Claim 10
Dependent Claim
32 words
A memory writing apparatus as claimed in any of claims 1 to 3 characterised in that a polar compound which is immersed in a polar solvent is used as the memory (5).
Claim 11
Dependent Claim
61 words
A memory writing apparatus as claimed in any preceding claim characterised in that the positioning means comprises an X - Y stage (3), a coarse control unit (11) for positioning in an X - Y plane, and an optical micro-scope (25) for examining the distance between the tip portion of the needle (8, 200) and the surface of the memory (5).
Claim 12
Dependent Claim
29 words
A memory writing apparatus as claimed in any preceding claim characterised in that the distance controlling means comprises a coarse control section (11) and a Z-axis control section (12).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.