Claims
- 1. For use with a code-producing unit including dual spaced point contacts and being capable of producing a code in response to an interrogation signal pair impressed on the point contacts, a code reader comprising:
- target contact means including spaced plural generally planar contacts regularly arrayed in two dimensions at least one of which is substantially greater than the space between the point contacts of the code-producing circuit, and
- interrogation signal-producing means operative with said target contact means to produce an interrogation signal pair at adjacent ones of said planar contacts.
Parent Case Info
This is a continuation of application Ser. No. 07/700,215, filed May 13, 1991, now U.S. Pat. No. 5,266,783.
US Referenced Citations (13)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2320574 |
Nov 1974 |
DEX |
61-233884 |
Oct 1986 |
JPX |
2-300885 |
Dec 1990 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
700215 |
May 1991 |
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