GB850043A - Improvements in or relating to gramophone pick-ups - Google Patents
Improvements in or relating to gramophone pick-upsInfo
- Publication number
- GB850043A GB850043A GB22647/58A GB2264758A GB850043A GB 850043 A GB850043 A GB 850043A GB 22647/58 A GB22647/58 A GB 22647/58A GB 2264758 A GB2264758 A GB 2264758A GB 850043 A GB850043 A GB 850043A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crystals
- stylus
- crystal
- manner
- block
- 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
- 239000013078 crystal Substances 0.000 abstract 12
- 241001422033 Thestylus Species 0.000 abstract 5
- 230000010287 polarization Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Liquid Crystal (AREA)
Abstract
850,043. Pick-ups. DEUTSCHE GRAMOPHON G.m.b.H. July 15, 1958 [July 15, 1957], No. 22647/58. Class 40 (4). [Also in Group XL (b)] A pick-up for use with lateral and/or hill-anddale records, such as may be used for stereophonic reproduction, comprises a stylus connected to two piezo-electric crystals or crystal systems in such a manner that the crystals or crystal systems produce like or opposite potential differences according to whether the stylus movement is produced by the one or the other type of recording. In Fig. 1 lateral movement of the stylus Z compresses one crystal and stretches the other, while vertical movement affects the crystals in like manner. According to the manner of polarization the outputs of the crystals are added or differenced to reproduce the signals from the one or other type of record. A crystal block, Fig. 3a, has six electrodes w arranged as shown with the stylus connected to the centre of one end of the block. The block may be formed of two crystals, Fig. 4a. One end of a pair of crystals, Fig. 5a, may be fixed, as also the mid-point of the other end at s. The stylus Z then operates the crystal as a " saddle oscillator." The principal axes A are as shown in Fig. 2b. The diagonals of a pair of crystals may be held by rigid pins P, Fig. 6, and the free corners may be operated by the stylus.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE850043X | 1957-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB850043A true GB850043A (en) | 1960-09-28 |
Family
ID=6776189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22647/58A Expired GB850043A (en) | 1957-07-15 | 1958-07-15 | Improvements in or relating to gramophone pick-ups |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1073762B (en) |
| FR (1) | FR1199831A (en) |
| GB (1) | GB850043A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3084228A (en) * | 1960-02-06 | 1963-04-02 | Nippon Columbia | Piezo-electric stereo transducer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1141799B (en) * | 1959-03-17 | 1962-12-27 | F & H Schumann Ges Mit Beschra | Piezoelectric pickup for scanning two recordings contained in a groove on a record |
| DE1202518B (en) * | 1960-03-26 | 1965-10-07 | Philips Nv | Electromechanical converter element |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2105916A (en) * | 1934-09-05 | 1938-01-18 | Bell Telephone Labor Inc | Sound reproducing system |
| DE816311C (en) * | 1949-05-04 | 1951-10-08 | Telefunken Gmbh | Pickups |
-
0
- DE DENDAT1073762D patent/DE1073762B/en active Pending
-
1958
- 1958-07-11 FR FR1199831D patent/FR1199831A/en not_active Expired
- 1958-07-15 GB GB22647/58A patent/GB850043A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3084228A (en) * | 1960-02-06 | 1963-04-02 | Nippon Columbia | Piezo-electric stereo transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1199831A (en) | 1959-12-16 |
| DE1073762B (en) | 1960-01-21 |
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