GB730664A - An improved magnetic sound record transcribing apparatus - Google Patents
An improved magnetic sound record transcribing apparatusInfo
- Publication number
- GB730664A GB730664A GB25078/52A GB2507852A GB730664A GB 730664 A GB730664 A GB 730664A GB 25078/52 A GB25078/52 A GB 25078/52A GB 2507852 A GB2507852 A GB 2507852A GB 730664 A GB730664 A GB 730664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- amplifier
- recording
- tape
- arm
- 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
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/06—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using web-form record carriers, e.g. tape
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/005—Reproducing at a different information rate from the information rate of recording
- G11B27/007—Reproducing at a different information rate from the information rate of recording reproducing continuously a part of the information, i.e. repeating
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
730,664. Magnetic recording and reproducing apparatus. EDINBURGH, UNIVERSITY COURT OF THE UNIVERSITY OF, and ANTHONY, J. K. F. Dec. 24,1953 [Oct. 7, 1952], No. 25078/52. Class 40 (2). A magnetic tape sound recording apparatus has means for re-recording, from a continuously progressive section of the tape, a secondary recording on an endless band, means being provided to reproduce repeatedly at will the secondary recording. The apparatus comprises a normal type recorder and reproducer employing reeled tape as shown in the lower part of Fig. 1, and incorporates a reel preamplifier RPA, Fig. 2, and a power amplifier PA. Switching 28a, 28b, 28c, 28d, 28e, 28f is incorporated which under the control of knob 28 switches the circuits to an extreme position A for recording and to the other extreme position B for reproducing. Intermediate positions C and D are provided for " rewind " and " fast forward," respectively. Normal recording and reproducing on the reel tape only is carried out with the ganged switch 44a, 44b, 44c set to position B. During a recording operation the microphone input jacks 31, 37 are connected to the input arm 28a of amplifier RPA, and the output arm 28d connects the head RP2 via resistor R4 to the output terminal B. During a reproducing operation the head RP2 is connected to the input of pre-amplifier RPA by arm 28a and 28d, and the output via an arm 28e to power amplifier PA, to which is connected a loud-speaker at terminal 14. An H.T. supply is taken from the power amplifier PA at terminal 46 to a point 45 on reel pre, amplifier RPA and to point 43 on loop preamplifier LPA via switch arms 28b and 42b, respectively, to bias/erase oscillators, the outputs of which are connected to terminals A served by arms 28c and 42c respectively. When it is desired to make a secondary recording on an endless tape 3, shown in the upper part of Fig. 1, the switch 44a, 44b, 44c is set to position A, switch 28 to position B, and switch 29 to B. Sound is thus produced via pre-amplifier RPA and PA as for normal reproducing. The operation of switch 29 closes a D.C. circuit through switch arm 44a to terminal B of a change-over switch 40 and moves a ganged switch 42a, 42b, 42c, 42d, 42e on the loop preamplifier LPA, to position B, whereby the output from pre-amplifier RPA, via a gain control 36, is connected to the input of pre-amplifier LPA, and the output of pre-amplifler LPA connected to head RPI. The loop 3 is set in forward motion by the operation of a switch 12 to position A. When a hear back passage is heard from the loud-speaker, it will have been recorded on the loop tape 3, and the pressbutton 35 is then operated to operate a relay 47 to release switch 29 to position A and stop the reel tape 3. Switch 35 at the same time applies power to contact A of the change-over switch 40 and moves switch 42a, 42b, 42c, 42d, 42e to position B, whereby the signal picked up by head RPI is passed via arms 42d and 42a to the input of pre-amplifier LPA from the output of which the signal is passed via arm 42e to the power amplifier PA. The signal on the loop tape 3 is thus heard repeatedly until the switch 29 is returned to position B, when the switch 42a, 42b, 42c, 42d, 42e is thus returned to position A, and the drive of the reel tape 21 restored ready for a further secondary recording to be made and played back as required.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25078/52A GB730664A (en) | 1952-10-07 | 1952-10-07 | An improved magnetic sound record transcribing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25078/52A GB730664A (en) | 1952-10-07 | 1952-10-07 | An improved magnetic sound record transcribing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB730664A true GB730664A (en) | 1955-05-25 |
Family
ID=10221848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25078/52A Expired GB730664A (en) | 1952-10-07 | 1952-10-07 | An improved magnetic sound record transcribing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB730664A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2972023A (en) * | 1956-08-10 | 1961-02-14 | Singer Rudolf | Apparatus for repeating the last position of a magnetic recording |
US3052762A (en) * | 1959-08-03 | 1962-09-04 | Dictaphone Corp | Backspacing apparatus for transcribing machines |
US3059348A (en) * | 1959-12-21 | 1962-10-23 | Mezzacappa Antonio Libero | Method and apparatus for teaching languages |
US3142909A (en) * | 1961-10-31 | 1964-08-04 | Linguatronics Inc | Electronic sound repeater mechanism |
US3269033A (en) * | 1965-10-05 | 1966-08-30 | Robert H Redfield | Audio-visual teaching apparatus |
US3538265A (en) * | 1968-02-01 | 1970-11-03 | Miner S Keeler | Instant replay system for radios and the like |
US3687395A (en) * | 1969-08-27 | 1972-08-29 | Canon Kk | Mode switching system for magnetic recording-reproducing apparatus |
US3701860A (en) * | 1969-10-28 | 1972-10-31 | Canon Kk | Magnetic recording and reproducing apparatus with time control in cartridge |
US3749852A (en) * | 1969-11-13 | 1973-07-31 | Canon Kk | Magnetic recording-reproducing device |
US3752935A (en) * | 1970-01-20 | 1973-08-14 | Canon Kk | Automatic switch device for magnetic recording and reproducing device |
US4408309A (en) * | 1981-07-20 | 1983-10-04 | Kiesling Roy A | Time delayed recording system |
-
1952
- 1952-10-07 GB GB25078/52A patent/GB730664A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2972023A (en) * | 1956-08-10 | 1961-02-14 | Singer Rudolf | Apparatus for repeating the last position of a magnetic recording |
US3052762A (en) * | 1959-08-03 | 1962-09-04 | Dictaphone Corp | Backspacing apparatus for transcribing machines |
US3059348A (en) * | 1959-12-21 | 1962-10-23 | Mezzacappa Antonio Libero | Method and apparatus for teaching languages |
US3142909A (en) * | 1961-10-31 | 1964-08-04 | Linguatronics Inc | Electronic sound repeater mechanism |
US3269033A (en) * | 1965-10-05 | 1966-08-30 | Robert H Redfield | Audio-visual teaching apparatus |
US3538265A (en) * | 1968-02-01 | 1970-11-03 | Miner S Keeler | Instant replay system for radios and the like |
US3687395A (en) * | 1969-08-27 | 1972-08-29 | Canon Kk | Mode switching system for magnetic recording-reproducing apparatus |
US3701860A (en) * | 1969-10-28 | 1972-10-31 | Canon Kk | Magnetic recording and reproducing apparatus with time control in cartridge |
US3749852A (en) * | 1969-11-13 | 1973-07-31 | Canon Kk | Magnetic recording-reproducing device |
US3752935A (en) * | 1970-01-20 | 1973-08-14 | Canon Kk | Automatic switch device for magnetic recording and reproducing device |
US4408309A (en) * | 1981-07-20 | 1983-10-04 | Kiesling Roy A | Time delayed recording system |
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