GB781871A - Remote control system - Google Patents
Remote control systemInfo
- Publication number
- GB781871A GB781871A GB524854A GB524854A GB781871A GB 781871 A GB781871 A GB 781871A GB 524854 A GB524854 A GB 524854A GB 524854 A GB524854 A GB 524854A GB 781871 A GB781871 A GB 781871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- indicator
- transmitter
- line
- over
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/221—Local indication of seats occupied in a facility, e.g. in a theatre
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1804—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for stock exchange and similar applications
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Computer Networks & Wireless Communication (AREA)
- Selective Calling Equipment (AREA)
Abstract
781,871. Electric selective signalling. WOLFINGER, J. Feb. 23, 1954, No. 5248/54. Class 40 (1). The individual elements of a collective indicator are controlled over the normal telephone network by predetermined signals including a frequency-selective pulse, whereby unauthorized operation of the indicator is prevented. Transmitter, Fig. 2. A telephone handset 1a establishes connection with the indicator location over a line selector 2 in the automatic exchange in the usual way, after which a thermionic oscillator 6 and a D.C. code impulse generator i1 are connected to line, in turn, to transmit a predetermined frequency pulse followed by a pulsed D.C. train characteristic of the transmitter, the line selector 2 being, in this case, arranged for through selection on a D.C. basis. Receiver, Fig. 2. When the indicator number is dialled a line relay A responds. The subsequent A.C. impulse is passed by a, filter F to actuate a relay Ws. Ws operates a start relay S, which locks and with relay A completes the circuit to a vertical and rotary selector 5 which is set by the D.C. impulses now sent from the transmitter impulser il pulsing the line relay A. Assuming that the indicator element 3a has been selected and that the lamp W1 thereof is alight, in which case relays V, W are energized, the wiper 7 of the selector 5 energizes a relay B, which de-energizes relays V, W, and locks as W releases. Relay W extinguishes the indicator lamp W1 and relay B lights B before the contact v1 of the delayed relay V has operated. A polarized relay P is also operated over wiper 7 and operates a relay K or L dependent on the position of contact v1 before V has relapsed. In the present case K operates. It locks over k1, de-energizes relay Sand over k2 connects a buzzer 11 to line for signalling back to the transmitter that the signal has been changed. When V relapses the signal element is ready to receive a new call. Relay K relapses after a predetermined time when its locking circuit is opened by a temperatureresponsive contactor T1. The next operation of indicator element 3a causes lamp W1 to be lit and B1 extinguished in a similar manner, relay L then performing the functions previously performed by K. Transmitter, Fig. 3. In this case after the indicator location has been dialled by the handset 1a, a frequency selective oscillator i3 is connected to line at i2 to transmit two A.C. pulses at the same time or different frequencies characteristic of the transmitter. Receiver, Fig. 3. The line relay A responds as before and then the relay Ws corresponding to the indicator element 3a associated with the operative transmitter is operated through a selective filter F1, by the first frequency selective pulse to energize a relay S which locks and operates a relay U so that the second frequency selective pulse passes through a selective filter F2 to operate a relay Ww. Each filter F1 is associated with a corresponding vertical busbar 9 and each filter F2 with a horizontal bus-bar 10 so that the operative filters F1, F2 effect a selection corresponding to that of a vertical and rotary selector. The selected relay Ww operates a relay Sb over the operated contact sw3 and de-energizes relay Sw to extinguish lamp w1 and light B1, relay Sb locking as Sw falls off. The delayed relay V is also energized by Ww and after its delay time releases S, U, when the unit is ready for a new change of indication. Signalling back is effected by relays K, L, P as in Fig. 2.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1086448D FR1086448A (en) | 1954-02-23 | 1953-07-21 | |
DE1953W0011743 DE1049928B (en) | 1954-02-23 | 1953-08-21 | |
GB524854A GB781871A (en) | 1954-02-23 | 1954-02-23 | Remote control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB524854A GB781871A (en) | 1954-02-23 | 1954-02-23 | Remote control system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB781871A true GB781871A (en) | 1957-08-28 |
Family
ID=9792513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB524854A Expired GB781871A (en) | 1954-02-23 | 1954-02-23 | Remote control system |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1049928B (en) |
FR (1) | FR1086448A (en) |
GB (1) | GB781871A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2476886A1 (en) * | 1980-02-26 | 1981-08-28 | Chambe Jean | Information board for visitors and tourists - comprises map with lights to locate particular buildings, and telephone connection to buildings for further information |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6408491A (en) * | 1963-07-24 | 1965-01-25 | ||
FR2397693A1 (en) * | 1977-07-13 | 1979-02-09 | Gottesman Victor | AUTONOMOUS OR INTERCONNECTED PANELS REMOTE CONTROL BY TELEPHONE ALLOWING REMOTE DISPLAY OF MESSAGES EXPRESSED BY A SET OF ALL OR NOTHING SIGNALS |
-
1953
- 1953-07-21 FR FR1086448D patent/FR1086448A/fr not_active Expired
- 1953-08-21 DE DE1953W0011743 patent/DE1049928B/de active Pending
-
1954
- 1954-02-23 GB GB524854A patent/GB781871A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2476886A1 (en) * | 1980-02-26 | 1981-08-28 | Chambe Jean | Information board for visitors and tourists - comprises map with lights to locate particular buildings, and telephone connection to buildings for further information |
Also Published As
Publication number | Publication date |
---|---|
DE1049928B (en) | 1959-02-05 |
FR1086448A (en) | 1955-02-11 |
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