Seiko Epson Corporation

Makoto Noguchi

Akio Takamoto

Toshiki Takei

Tsutomu Kasai

Masahiro Takei

Makoto Yoshiki

Kenji Nariai

A printer having multiple processor cores, and a firmware rewriting method for the printer, enable rewriting firmware in a short time. A first rewrite controller controls rewriting the firmware of the first core by the boot program of the first core; a second rewrite controller controls rewriting the firmware of a second core, which is one of the multiple cores other than the first core, by the boot program of the first core; and a reset unit resets the printer after rewriting the firmware of the first core and the firmware of the second core by the boot program of the first core ends.

Method of rewriting printer firmware, and printer

Efficient power conservation is enabled using a configuration having multiple processors. A printing device has a first processor unit that runs a program stored in a first memory, and a second processor unit that runs a program stored in a second memory, and has operating modes including a normal mode in which the first processor unit and the second processor unit operate according to a normal clock, and a first power conservation mode in which, after going to a state enabling the first processor unit to execute some processes of the second processor unit, the first processor unit operates according to the normal clock, and the second processor operates according to a slow clock having an operating frequency lower than the normal clock.

Information processing device, printing device, and control method of an information processing device

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Suwa, Japan

Makoto Noguchi