Power and signal supply control device

Details Power and signal supply control device Power and signal supply control device

1989-11-27

1991-04-16

Shaw, Dale M.

Boots, shoes, and leggings

371 66, G06F 100

Patent

active

050088467

ABSTRACT:
In a laptop computer normally equipped with a removable flat panel display and having the option of being equipped with an external display, the removal of the flat panel display is detected when it is removed, thereby disabling the supply of power, control signals and data to the display. The supply of power, control signals and data to the display is not started unless the removable display is connected to the main system and a reset signal is generated by a power switch of the system or a reset switch. When the display is being connected to the main system, therefore, the supply of power, control signals and data to the display is disabled without fail.

REFERENCES:
patent: 4628484 (1986-12-01), Hattorie
patent: 4667289 (1987-05-01), Yoshida et al.
patent: 4698748 (1987-10-01), Juzswik et al.
patent: 4747041 (1988-05-01), Engel et al.
patent: 4806784 (1989-02-01), Goda
patent: 4903211 (1990-02-01), Ando
IBM Technical Disclosure Bulletin, vol. 29, No. 10, Mar. 1987, pp. 4273-4274.

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