Camera having magnetic head for demagnetizing and recording in demagnetization pattern
AssigneeCanon Kabushiki Kaisha
InventorAkira Egawa
Life of this patent
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Abstract
A camera arranged to use a film having a magnetic storage part comprises a magnetic head which is arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film; and a control circuit which causes the magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part with a predetermined demagnetization pattern of a frequency lower than the frequency of the signal pattern and to form information to be recorded in the magnetic storage part of the film in the shape of the demagnetization pattern.
Claims6
A camera adapted to use a film having a magnetic storage part, comprising:
- a) a magnetic head arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film;
- and
- b) control means for causing said magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part of the film with a predetermined demagnetization pattern which is of a frequency lower than that of the signal pattern, and for forming information to be recorded in the magnetic storage part of the film in the demagnetization pattern.
A camera adapted to use a film having a magnetic storage part, comprising:
- a) a magnetic head arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film;
- and
- b) control means for causing said magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part of the film with a predetermined demagnetization pattern, and for forming information to be recorded in the magnetic storage part of the film in the demagnetization pattern.
An apparatus for a camera adapted to use a film having a magnetic storage part, comprising:
- a) a magnetic head arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film;
- and
- b) control means for causing said magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part of the film with a predetermined demagnetization pattern which is of a frequency lower than that of the signal pattern, and for forming information to be recorded in the magnetic storage part of the film in the demagnetization pattern.
An apparatus for a camera adapted to use a film having a magnetic storage part, comprising:
- a) a magnetic head arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film;
- and
- b) control means for causing said magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part of the film with a predetermined demagnetization pattern, and for forming information to be recorded in the magnetic storage part of the film in the demagnetization pattern.
Dependencies are inferred from the claim text.