초록 ▼

A laptop computer system includes a protected mode microprocessor capable of operating in restricted and unrestricted modes, and an arrangement which in response to a predetermined condition saves information from the processor and then forcibly switches the processor to its unrestricted mode of ope

A laptop computer system includes a protected mode microprocessor capable of operating in restricted and unrestricted modes, and an arrangement which in response to a predetermined condition saves information from the processor and then forcibly switches the processor to its unrestricted mode of operation. When running a multi-tasking operating system where an application program is being executed in a restricted mode, a suspend/resume operation can be carried out in which the system is substantially powered down and then powered back up, and will resume the interrupted application with the restricted mode back in effect. Further, set-up changes such as adjustment of the processor speed can be made without exiting the application program running in the restricted mode.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] An apparatus, comprising: a main processor having a normal operational mode, a first reduced power mode, and a second reduced power mode different from said first reduced power mod

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] An apparatus, comprising: a main processor having a normal operational mode, a first reduced power mode, and a second reduced power mode different from said first reduced power mode; an auxiliary processor operationally coupled to said main processor; a modem adapted to be coupled to a telephone line, having an output, and having means for producing a ring signal at said output in response to an incoming telephone call on the telephone line; means responsive to a first predetermined condition for switching said main processor to said first reduced power mode and responsive to a second predetermined condition for switching said main processor to said second reduced power mode; means for causing said auxiliary processor to monitor said output of said modem when said main processor is in said first reduced power mode and to switch said main processor from said first reduced power mode to said normal operational mode in response to an occurrence of said ring signal at said output of said modem; and means for causing said main processor to monitor said output of said modem when said main processor is in said second reduced power mode and to switch from said second operational mode to said normal operational mode in response to an occurrence of said ring signal at said output of said modem.