GB1065866A - A signal converting system for start-stop telegraph signals - Google Patents
A signal converting system for start-stop telegraph signalsInfo
- Publication number
- GB1065866A GB1065866A GB2084664A GB2084664A GB1065866A GB 1065866 A GB1065866 A GB 1065866A GB 2084664 A GB2084664 A GB 2084664A GB 2084664 A GB2084664 A GB 2084664A GB 1065866 A GB1065866 A GB 1065866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- output
- bit
- unit
- store
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
- H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/07—Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates or bit rates
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
1,065,866. Telegraphy. KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA. May 20, 1964 [May 21, 1963; Sept. 11, 1963], No. 20846/64. Heading H4P. In a speed-changing telegraph unit input Start/Stop signals are converted to isochronous signals having a higher bit rate, any gap in the output, due to its higher speed, being filled by a like bit to that last transmitted. In one embodiment, 7¢-bit signals are shaped at 2 and sampled at 3, the samples being stored successively on toggles 4, 5. Unit 24 starts producing sampling pulses at the input bit rate when the output of the shaper 2 is opposite to the bit stored at 4 (i.e. a Start pulse has arrived subsequent to a Stop pulse) and when counter 26 is at rest. Counter 26 counts 7 sampling pulses and allows only these 7 pulses to pass to sampling gates 22a, 22b. Unit 7 provides read-out pulses at the output bit-rate and unit 6 controls the transfer of bits from store 4 to store 5. If one pulse from unit 7 occurs between adjacent sampling pulses from unit 24, store 5 takes up the state of store 4 and the original state of store 5 passes to the output 80. However, if two pulses from 7 occur between adjacent pulses from 24 there is no such transfer of bits in response to the second of these pulses and the bit stored at 5 is repeated to the output. In this manner, whenever the output isochronous signals " overtake " the input signals a Stop bit is inserted between the Stop and Start bits of adjacent characters. Where the output speed is much greater than the input speed more than two stores are used. A multiplex system uses devices as above for each input and time shares the read-out pulses from a common unit 7.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2544763 | 1963-05-21 | ||
JP4796463 | 1963-09-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1065866A true GB1065866A (en) | 1967-04-19 |
Family
ID=26363062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2084664A Expired GB1065866A (en) | 1963-05-21 | 1964-05-20 | A signal converting system for start-stop telegraph signals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1065866A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2923207A1 (en) * | 1978-06-16 | 1979-12-20 | Philips Nv | CIRCUIT FOR THE CONVERSION OF START-STOP SIGNALS INTO AN ISOCHRONOUS SIGNAL |
FR2453558A1 (en) * | 1979-02-08 | 1980-10-31 | Racal Vadic Inc | PERMETTA RECEPTION PAD |
US6415856B1 (en) | 1998-12-21 | 2002-07-09 | Valeo Climatisation | Heating/air-conditioning device for reduced size for a motor vehicle |
-
1964
- 1964-05-20 GB GB2084664A patent/GB1065866A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2923207A1 (en) * | 1978-06-16 | 1979-12-20 | Philips Nv | CIRCUIT FOR THE CONVERSION OF START-STOP SIGNALS INTO AN ISOCHRONOUS SIGNAL |
FR2453558A1 (en) * | 1979-02-08 | 1980-10-31 | Racal Vadic Inc | PERMETTA RECEPTION PAD |
US6415856B1 (en) | 1998-12-21 | 2002-07-09 | Valeo Climatisation | Heating/air-conditioning device for reduced size for a motor vehicle |
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