IT1030496B - Testina di rivelazione o di incisione per supporti di registrazione a disco - Google Patents

Testina di rivelazione o di incisione per supporti di registrazione a disco

Info

Publication number
IT1030496B
IT1030496B IT67832/75A IT6783275A IT1030496B IT 1030496 B IT1030496 B IT 1030496B IT 67832/75 A IT67832/75 A IT 67832/75A IT 6783275 A IT6783275 A IT 6783275A IT 1030496 B IT1030496 B IT 1030496B
Authority
IT
Italy
Prior art keywords
detection
recording media
disc recording
engraving head
engraving
Prior art date
Application number
IT67832/75A
Other languages
English (en)
Original Assignee
Philips Nv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT1030496B publication Critical patent/IT1030496B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R11/12—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)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measuring Magnetic Variables (AREA)
  • Adjustable Resistors (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electromagnets (AREA)
IT67832/75A 1974-04-01 1975-03-28 Testina di rivelazione o di incisione per supporti di registrazione a disco IT1030496B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7404359A NL7404359A (nl) 1974-04-01 1974-04-01 Groeftaster en/of snijder.

Publications (1)

Publication Number Publication Date
IT1030496B true IT1030496B (it) 1979-03-30

Family

ID=19821084

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67832/75A IT1030496B (it) 1974-04-01 1975-03-28 Testina di rivelazione o di incisione per supporti di registrazione a disco

Country Status (13)

Country Link
US (1) US4031335A (it)
JP (1) JPS5323693B2 (it)
AT (1) AT344417B (it)
BE (1) BE827433A (it)
CA (1) CA1013683A (it)
CH (1) CH584496A5 (it)
DE (1) DE2512467C3 (it)
DK (1) DK131275A (it)
ES (1) ES436140A1 (it)
FR (1) FR2266412B1 (it)
GB (1) GB1505884A (it)
IT (1) IT1030496B (it)
NL (1) NL7404359A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279903A (en) * 1975-12-25 1977-07-05 Torio Kk Pickup cartridge
JPS5487504A (en) * 1977-12-23 1979-07-12 Alps Electric Co Ltd Electromagnetic pickup cartridge
NL8100448A (nl) * 1981-01-30 1982-08-16 Philips Nv Groeftaster en/of snijder.
DE3228300C2 (de) * 1982-07-29 1984-12-06 Philips Patentverwaltung Gmbh, 2000 Hamburg Tonabnehmer zum Auslesen von Informationen aus der Rille einer sich drehenden Informationsträgerplatte
DE3228299A1 (de) * 1982-07-29 1984-02-02 Philips Patentverwaltung Gmbh, 2000 Hamburg Tonabnehmer zum auslesen von informationen aus der rille einer sich drehenden informationstraegerplatte

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043920A (en) * 1957-02-15 1962-07-10 Electro Sonic Lab Inc Electromagnetic phonograph pickups
US3055988A (en) * 1957-04-08 1962-09-25 Shure Bros Magnetic phonograph pickup
GB930366A (en) * 1958-11-10 1963-07-03 Bang & Olufsen Produktionssels Stereophonic pick-up having a single stylus
DE1112841B (de) * 1960-04-08 1961-08-17 Telefunken Gmbh Elektrisch-mechanischer Wandler
US3294405A (en) * 1963-12-11 1966-12-27 Audio Dynamics Corp Phonograph pick-up
US3441688A (en) * 1966-04-18 1969-04-29 Empire Scient Corp Electromagnetic phonograph pickup cartridges with zero balanced armature flux
US3761647A (en) * 1968-08-14 1973-09-25 Audio Technica Kk Cartridge for detecting vibrations representing stereophonic sound
US3646279A (en) * 1970-12-07 1972-02-29 Pickering & Co Inc Induced magnetic moving iron stereophonic phonograph pickup with replaceable stylus assembly and one common pole piece

Also Published As

Publication number Publication date
ES436140A1 (es) 1977-02-01
CA1013683A (en) 1977-07-12
FR2266412A1 (it) 1975-10-24
US4031335A (en) 1977-06-21
AT344417B (de) 1978-07-25
DK131275A (it) 1975-10-02
ATA242075A (de) 1977-11-15
DE2512467A1 (de) 1975-10-09
DE2512467C3 (de) 1979-02-08
GB1505884A (en) 1978-03-30
JPS50137103A (it) 1975-10-31
CH584496A5 (it) 1977-01-31
BE827433A (fr) 1975-10-01
FR2266412B1 (it) 1982-03-26
DE2512467B2 (de) 1978-06-08
JPS5323693B2 (it) 1978-07-17
AU7957575A (en) 1976-09-30
NL7404359A (nl) 1975-10-03

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