GB923898A - Improvements relating to electrical signal-separating apparatus - Google Patents
Improvements relating to electrical signal-separating apparatusInfo
- Publication number
- GB923898A GB923898A GB2779059A GB2779059A GB923898A GB 923898 A GB923898 A GB 923898A GB 2779059 A GB2779059 A GB 2779059A GB 2779059 A GB2779059 A GB 2779059A GB 923898 A GB923898 A GB 923898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- auxiliary
- gating
- signal
- channels
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/12—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
- G05B19/16—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using magnetic record carriers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/408—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Numerical Control (AREA)
Abstract
923,898. Electric copying machines. FERRANTI Ltd. Aug. 10, 1960 [Aug. 14, 1959], No. 27790/59. Class 38 (6). [Also in Group XL (c)] In a machine tool control system, gating circuits provide for the separation of two pulse signals which are either recorded on a common magnetic track or received from an unspecified source. Four channels are provided, one carrying reference pulses, Fig. 2 (a)R, the other three carrying pulses modulated in phase relative to the reference, in order to control the movements of the machine tool along 3 axes. At intervals, an auxiliary binary coded signal is introduced by either marking or not marking the 3 control signals (and the reference signal if desired) to provide the appropriate code combination. The marking is effected by "notching," Fig. 2 (b) eight successive control pulses in the selected channel by means of auxiliary pulses. For each channel, a reading head 12, Fig. 1, is provided. This controls a bi-stable circuit 14 the output of which is the waveform as originally recorded, Fig. 2 (d). The leading edge of each main pulse triggers a blocking oscillator 15 to generate gating pulses of opposite polarity, Fig. 2 (e) and (f), these pulses being shorter in duration than a main pulse, but long enough to include an auxiliary pulse. Gating the incoming signal at 16 and 17 with the positive gating pulses reconstitutes the main signal free from auxiliary pulses, and gating the incoming signal at 22 with the negative gating pulses produces the auxiliary pulses only, Fig. 2 (h). These are integrated at 23 so that if at least 6 out of the 8 auxiliary pulses are present, a signal is passed via a bi-stable circuit 25 to a binary signal decoder 33. The outputs of the other channels are also applied to decoder 33, provision being made that the arrival of a group of auxiliary pulses in any one of the channels first resets at channels 8 the decoder 33 from its existing reading.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL254872D NL254872A (en) | 1959-08-14 | ||
NL120657D NL120657C (en) | 1959-08-14 | ||
GB2779059A GB923898A (en) | 1959-08-14 | 1959-08-14 | Improvements relating to electrical signal-separating apparatus |
CH901860A CH389019A (en) | 1959-08-14 | 1960-08-09 | Electrical signal separation system |
US49204A US3036271A (en) | 1959-08-14 | 1960-08-12 | Apparatus for separating the rectangular and pulsed form component signals of a composite electrical signal |
DEF31865A DE1121650B (en) | 1959-08-14 | 1960-08-12 | Electrical signal system for separating a pulse-width modulated main signal from an encoded auxiliary signal |
FR835751A FR1265008A (en) | 1959-08-14 | 1960-08-12 | Electrical signal separator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2779059A GB923898A (en) | 1959-08-14 | 1959-08-14 | Improvements relating to electrical signal-separating apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB923898A true GB923898A (en) | 1963-04-18 |
Family
ID=10265353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2779059A Expired GB923898A (en) | 1959-08-14 | 1959-08-14 | Improvements relating to electrical signal-separating apparatus |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH389019A (en) |
GB (1) | GB923898A (en) |
NL (2) | NL120657C (en) |
-
0
- NL NL254872D patent/NL254872A/xx unknown
- NL NL120657D patent/NL120657C/xx active
-
1959
- 1959-08-14 GB GB2779059A patent/GB923898A/en not_active Expired
-
1960
- 1960-08-09 CH CH901860A patent/CH389019A/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL120657C (en) | |
NL254872A (en) | |
CH389019A (en) | 1965-03-15 |
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