GB692117A - - Google Patents
Info
- Publication number
- GB692117A GB692117A GB692117DA GB692117A GB 692117 A GB692117 A GB 692117A GB 692117D A GB692117D A GB 692117DA GB 692117 A GB692117 A GB 692117A
- Authority
- GB
- United Kingdom
- Prior art keywords
- message
- relays
- recorder
- feb
- recorded
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/022—Selective call receivers
- H04W88/023—Selective call receivers with message or information receiving capability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
692,117. Recording telephone messages. GASSMANN, V. O. Feb. 9, 1951 [Feb. 10, 1950; Jan. 16, 1951], No. 3233/51. Drawings to Specification. Class 40 (iv). [Also in Group XL (c)] A radio telephony receiver comprises tuned relays selectively responsive to detected lowfrequency calling signals acting during a call to operate a contactor switch putting a power amplifier and recorder in circuit so that a telephone message is recorded, e.g. magnetically on wire by the selected receiver. The relays may be vibrating reeds which on predetermined call frequencies being successively demodulated operate slow release holding relays which when in pulled up position together energize the operating solenoid of a pawl and ratchet operating by one step a rotary contactor switch. Signals of same frequency at the end of a message further rotate the latter so switching off the amplifier and recorder, and so on alternately. An indicator lamp lights up when the first message is being recorded and is maintained lit by a polarized relay after the first message until subsequently the contactor is moved to play back position manually; also a bell may be rung. Disc or optical recorders may alternatively be employed. The message may be transmitted backwards or at an excessive speed for secrecy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1012687T | 1950-02-10 | ||
| FR61234T | 1951-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB692117A true GB692117A (en) |
Family
ID=32826915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB692117D Active GB692117A (en) | 1950-02-10 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE501055A (en) |
| CH (1) | CH294527A (en) |
| DE (1) | DE926613C (en) |
| FR (1) | FR61234E (en) |
| GB (1) | GB692117A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2479701A (en) * | 1944-02-07 | 1949-08-23 | William C De Vry | Transmitting system |
-
0
- GB GB692117D patent/GB692117A/en active Active
-
1951
- 1951-01-16 FR FR61234D patent/FR61234E/fr not_active Expired
- 1951-01-31 CH CH294527D patent/CH294527A/en unknown
- 1951-02-05 BE BE501055D patent/BE501055A/xx unknown
- 1951-02-11 DE DEG5194A patent/DE926613C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH294527A (en) | 1953-11-15 |
| FR61234E (en) | 1955-04-05 |
| DE926613C (en) | 1955-04-21 |
| BE501055A (en) | 1951-02-28 |
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