GB1172508A - Mutable code converter - Google Patents
Mutable code converterInfo
- Publication number
- GB1172508A GB1172508A GB5666366A GB5666366A GB1172508A GB 1172508 A GB1172508 A GB 1172508A GB 5666366 A GB5666366 A GB 5666366A GB 5666366 A GB5666366 A GB 5666366A GB 1172508 A GB1172508 A GB 1172508A
- Authority
- GB
- United Kingdom
- Prior art keywords
- delay line
- bit
- code
- code converter
- dec
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Communication Control (AREA)
Abstract
1,172,508. Code converters. RANK XEROX Ltd. 19 Dec., 1966 [27 Dec., 1965], No. 56663/66. Heading G4H. A digital code converter for converting code groups into larger code groups uses a circulating memory loadable through logic means with conversion information. A code converter comprises a recirculating magneto-strictive delay line containing 84 segments each of 117 bits, preceded by a group of sync. bits. An input bit group representing one of 117 characters is compared with a counter specifying the bit position reached in the current segment of the delay line. On equality, which occurs once (at the same time) in each segment, the current delay line bit is gated out to a C.R.T. display. The delay line is preloaded, e.g. over telephone lines, from a computer (which can thus alter the font), which also supplies the character bit group to be converted. These two types of input are distinguished by a bit preceding them. Use in cryptography is also mentioned.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51639165A | 1965-12-27 | 1965-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1172508A true GB1172508A (en) | 1969-12-03 |
Family
ID=24055369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5666366A Expired GB1172508A (en) | 1965-12-27 | 1966-12-19 | Mutable code converter |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1462958A1 (en) |
| FR (1) | FR1506808A (en) |
| GB (1) | GB1172508A (en) |
| NL (1) | NL6618069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774596A (en) * | 1981-04-17 | 1988-09-27 | Sharp Kabushiki Kaisha | Electronic dictionary using a video disk in an information retrieval system |
-
1966
- 1966-12-19 GB GB5666366A patent/GB1172508A/en not_active Expired
- 1966-12-23 NL NL6618069A patent/NL6618069A/xx unknown
- 1966-12-27 DE DE19661462958 patent/DE1462958A1/en active Pending
- 1966-12-27 FR FR88978A patent/FR1506808A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774596A (en) * | 1981-04-17 | 1988-09-27 | Sharp Kabushiki Kaisha | Electronic dictionary using a video disk in an information retrieval system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1506808A (en) | 1967-12-22 |
| DE1462958A1 (en) | 1968-12-12 |
| NL6618069A (en) | 1967-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |