FR2335901A1 - Musical signal electronic visual display - uses two oscillators whose frequency can be modulated to drive counters - Google Patents

Musical signal electronic visual display - uses two oscillators whose frequency can be modulated to drive counters

Info

Publication number
FR2335901A1
FR2335901A1 FR7538415A FR7538415A FR2335901A1 FR 2335901 A1 FR2335901 A1 FR 2335901A1 FR 7538415 A FR7538415 A FR 7538415A FR 7538415 A FR7538415 A FR 7538415A FR 2335901 A1 FR2335901 A1 FR 2335901A1
Authority
FR
France
Prior art keywords
modulated
visual display
oscillators
counters
whose frequency
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.)
Granted
Application number
FR7538415A
Other languages
French (fr)
Other versions
FR2335901B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7538415A priority Critical patent/FR2335901A1/en
Publication of FR2335901A1 publication Critical patent/FR2335901A1/en
Application granted granted Critical
Publication of FR2335901B1 publication Critical patent/FR2335901B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0008—Associated control or indicating means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address

Abstract

The system is designed to give a visual representation of a musical signal. It uses an arrangement of two oscillators. These oscillators produce pulses at different frequencies. Both these frequencies can be modulated if an exterior signal is applied to them. The pulses control two binary counters. A group of output units generate the visual display as a function of the variable states of the outputs of the counters. The output units include electro-optical devices which produce a visible signal when they are excited by an electrical voltage. These electro-optical devices may be electroluminescent diodes, incandescent lamps, discharge tubes or liquid crystal units. They may also be visible mechanical systems which vary their form.
FR7538415A 1975-12-16 1975-12-16 Musical signal electronic visual display - uses two oscillators whose frequency can be modulated to drive counters Granted FR2335901A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7538415A FR2335901A1 (en) 1975-12-16 1975-12-16 Musical signal electronic visual display - uses two oscillators whose frequency can be modulated to drive counters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7538415A FR2335901A1 (en) 1975-12-16 1975-12-16 Musical signal electronic visual display - uses two oscillators whose frequency can be modulated to drive counters

Publications (2)

Publication Number Publication Date
FR2335901A1 true FR2335901A1 (en) 1977-07-15
FR2335901B1 FR2335901B1 (en) 1978-06-23

Family

ID=9163777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7538415A Granted FR2335901A1 (en) 1975-12-16 1975-12-16 Musical signal electronic visual display - uses two oscillators whose frequency can be modulated to drive counters

Country Status (1)

Country Link
FR (1) FR2335901A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665640A (en) * 1985-03-18 1987-05-19 Gray Ventures, Inc. Electromechanical controller
US5108341A (en) * 1986-05-28 1992-04-28 View-Master Ideal Group, Inc. Toy which moves in synchronization with an audio source
US5408772A (en) * 1991-07-08 1995-04-25 Pettyjohn; Brad M. Sound plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665640A (en) * 1985-03-18 1987-05-19 Gray Ventures, Inc. Electromechanical controller
US5108341A (en) * 1986-05-28 1992-04-28 View-Master Ideal Group, Inc. Toy which moves in synchronization with an audio source
US5408772A (en) * 1991-07-08 1995-04-25 Pettyjohn; Brad M. Sound plate

Also Published As

Publication number Publication date
FR2335901B1 (en) 1978-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse