US 11,907,008 B2Granted

Communication apparatus and control method thereof

AssigneeCanon Kabushiki Kaisha

InventorHiroaki Niitsuma

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Abstract

A communication apparatus includes a communication circuit, a clock supply circuit, a CPU and a memory storing a program which, when executed by the CPU, causes the communication apparatus to function as a control unit which causes the communication circuit to operate in one of a first mode in which the communication circuit performs a normal communication with the external apparatus and a second mode in which the communication circuit operates with lower power consumption than in the first mode. In the second mode, the control unit controls the clock supply circuit so as not to supply the clock signal to the communication circuit. While the communication circuit is operating in the second mode and the clock signal is not being supplied to the communication circuit, the control unit controls the clock supply circuit to start supply of the clock signal to the communication circuit in response to a predetermined signal.

Claims9

Dependent claims

A communication apparatus comprising:

a communication circuit which operates to communicate with an external apparatus;
a clock supply circuit;
a CPU;
and
a memory storing a program which, when executed by the CPU, causes the communication apparatus to function as:
a control unit configured to cause the communication circuit to operate in any one of a plurality of modes including a first mode and a second mode, the first mode being a mode in which the communication circuit performs a normal communication with the external apparatus, the second mode being a mode in which the communication circuit operates with lower power consumption than in the first mode,
wherein, in a case where the communication circuit operates in the second mode, the control unit controls the clock supply circuit so as not to supply a clock signal to the communication circuit, and
wherein, while the communication circuit is operating in the second mode and the clock signal is not being supplied to the communication circuit, the control unit controls the clock supply circuit to start supply of the clock signal to the communication circuit in response to receiving a predetermined signal;
and
a measurement unit configured to output the predetermined signal to the control unit in response to lapse of a return period having been set.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/678,577Filed 23 Feb 2022
Priority: JP 2021-0336593 Mar 2021
Published: US 2022/0283604 A18 Sep 2022
Granted: 20 Feb 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 1/10
Generating or distributing clock signals or signals derived directly therefrom: distribution of clock signals , e.g. skew
G06F 1/3237
Power saving characterised by the action undertaken: by disabling clock generation or distribution
G06F 1/325
Power saving characterised by the action undertaken: power saving in peripheral device
G06F 13/4221
On a parallel bus: being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus

Family

US 2022/0283604 A1Pre-grant publication · published 8 Sep 2022
US 11,907,008 B2This patent

From the US filing history. Foreign family members aren’t listed.

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