US 5,475,455 A · Information recording device

Abstract

In a camera comprising a CPU, a film feeding section, a serial data clock creating circuit section, a PPM conversion circuit section, a photographic information output circuit section, and a magnetic head drive section, the CPU produces a reference clock CLK depending on a film winding speed in the film feeding section, and the serial data clock creating circuit section creates a serial data clock SCK corresponding to the reference clock CLK. The CPU converts photographic information from the photographic information output circuit section into serial data and outputs the serial data in synchronization with the serial data clock SCK. Based on the serial data and the reference clock CLK both from the CPU, the PPM conversion circuit section converts photographic information into a PPM signal and outputs the PPM signal to the magnetic head drive section for magnetically recording it on a film.

Claims11

Dependent claims

An information recording device capable of magnetically recording a plurality of types of information on a magnetic medium, comprising:

an information output circuit which outputs the information consisted of a plurality of bits;
a control circuit which converts said information into serial data and outputs said serial data in synchronization with a serial data clock;
a serial data clock creating circuit provided outside said control circuit which creates said serial data clock having a predetermined frequency based on an output clock delivered from said control circuit and inputs said serial data clock to said control circuit,
a PPM signal conversion circuit which converts said serial data into a PPM signal;
and
a magnetic recording device which magnetically records said PPM signal on a magnetic medium.

3 more elements

Dependencies are inferred from the claim text.

Information recording device

Life of this patent

Information recording device

Life of this patent

Abstract

Claims11