Computer peripheral device, its control method, image pickup device, storage medium, computer system, and computer

An image pickup device connected with a host computer, comprising:

• image pickup means;
• connection signal transmission means for transmitting a signal representing connection/disconnection with said host computer, to said host computer;
• and
• control means for supervising continuation of communication with said host computer, and for causing said connection signal transmission means to transmit the signal representing the disconnection to said host computer and shifting an operating state to a low consumption current mode when the communication does not continue for a predetermined time.

A computer system comprising:

• a host computer;
• a peripheral device, freely connectable with said host computer, for shifting to a low power consumption mode under a predetermined condition;
• and
• a connection medium for mutually connecting said host computer and said peripheral device with each other, and interactively transmitting between said host computer and said peripheral device a connection signal representing a connection state of said host computer and said peripheral device,
• wherein said peripheral device notifies said host computer of a predetermined message before shifting to the low power consumption mode, and said host computer notifies a user of a content according to the predetermined message.

A peripheral device which is freely connectable with a host computer through a connection medium interactively transmitting a connection signal representing a connection state with said host computer, and shifts to a low power consumption mode under a predetermined condition, comprising:

• connection detection means for detecting the connection with said host computer in response to the connection signal sent from said host computer;
• message transmission means for transmitting to said host computer a signal representing disconnection of said connection medium as a predetermined message when said predetermined condition is established;
• and
• control means for shifting each part to the low power consumption mode after said message transmission means performs message output.

A computer which is freely connectable with a peripheral device through a connection medium interactively transmitting a connection signal representing a connection state with said peripheral device, comprising:

• a communication module, being in a start-up state when said peripheral device is connected, for directly exchanging data with said peripheral device;
• a service module, being started up if necessary, for exchanging data with said peripheral device through said communication module;
• service module detection means for detecting the start-up state of said service module;
• and
• control means for causing said service module to notify a user of the content of a predetermined message in a case where said service module has been started up when said predetermined message is received from said peripheral device, and for causing said communication module to notify the user of the content of said predetermined message in a case where said service module is not started up when said predetermined message is received from said peripheral device.

A control method for a peripheral device which is freely connectable with a host computer through a connection medium interactively transmitting a connection signal representing a connection state with said host computer, and shifts to a low power consumption mode under a predetermined condition, said method comprising:

• a connection detection step of detecting the connection with said host computer in response to the connection signal sent from said host computer;
• a message transmission step of transmitting to said host computer a signal representing disconnection of said connection medium as a predetermined message when said predetermined condition is established;
• and
• a control step of shifting each part to the low power consumption mode after said message transmission step performs message output.

A control method for a computer which is freely connectable with a peripheral device through a connection medium interactively transmitting a connection signal representing a connection state with said peripheral device, said method comprising:

• a communication step, being in a start-up state when said peripheral device is connected, of directly exchanging data with said peripheral device by a communication module;
• a data exchange step, being started up if necessary, of causing a service module to exchange data with said peripheral device through said communication module;
• a service module detection step of detecting the start-up state of said service module;
• and
• a control step of causing said service module to notify a user of the content of a predetermined message in a case where said service module has been started up when said predetermined message is received from said peripheral device, and of causing said communication module to notify the user of the content of said predetermined message in a case where said service module is not started up when said predetermined message is received from said peripheral device.

A storage medium which stores program software realizes a control method for a peripheral device connected with a host computer, said method comprising:

• a connection detection step of detecting the connection with said host computer in response to a connection signal sent from said host computer;
• a message transmission step of transmitting to said host computer a signal representing disconnection of a connection medium as a predetermined message when a predetermined condition is established;
• and
• a control step of shifting each part to a low power consumption mode after said message transmission step performs message output.

A storage medium which stores program software realizes a control method for a host computer connected with a peripheral device, said method comprising:

• a communication step, being in a start-up state when said peripheral device is connected, of directly exchanging data with said peripheral device by a communication module;
• a data exchange step, being started up if necessary, of causing a service module to exchange data with said peripheral device through said communication module;
• a service module detection step of detecting the start-up state of said service module;
• and
• a control step of causing said service module to notify a user of the content of a predetermined message in a case where said service module has been started up when said predetermined message is received from said peripheral device, and of causing said communication module to notify the user of the content of said predetermined message in a case where said service module is not started up when said predetermined message is received from said peripheral device.