Controller which allows direct access by processor to peripheral

Details Controller which allows direct access by processor to peripheral Controller which allows direct access by processor to peripheral

1989-08-25

1992-01-07

Lee, Thomas C.

Boots, shoes, and leggings

3642384, 3642412, 364240, 36492692, 364935, 3649354, 364134, 340799, 364DIG1, 364DIG2, G06F 1200, G06F 1206, G06F 1316

Patent

active

050796925

ABSTRACT:
A controller such as a CRT controller is connected to a microprocessor via a system bus and has connecting terminals for its peripheral units. This controller is provided with a control terminal for receiving the control signal supplied from the microprocessor and control means for providing high impedance at the connecting terminal in response to the control signal. The controller having such a construction permits the microprocessor to directly access the peripheral units.

REFERENCES:
patent: 4070710 (1978-01-01), Sukonick et al.
patent: 4200916 (1980-04-01), Seipp
patent: 4263648 (1981-04-01), Stafford
patent: 4293908 (1981-10-01), Bradley et al.
patent: 4368512 (1983-01-01), Kyu et al.
patent: 4379340 (1983-04-01), Holtey et al.
patent: 4398246 (1983-08-01), Frediani et al.
patent: 4415985 (1983-11-01), McDaniel
patent: 4449202 (1984-05-01), Knapp et al.
patent: 4460957 (1984-07-01), Eggebrecht et al.
patent: 4460960 (1984-07-01), Anderson et al.
patent: 4462084 (1984-07-01), Greenwood
patent: 4467447 (1984-08-01), Takahashi et al.
patent: 4511965 (1985-04-01), Rajaram
patent: 4513390 (1985-04-01), Walter et al.
patent: 4527250 (1985-07-01), Galdun et al.
patent: 4543629 (1985-09-01), Carey et al.
patent: 4558412 (1985-12-01), Inoshita et al.
patent: 4570220 (1986-02-01), Tetrick
patent: 4577344 (1986-03-01), Warren et al.
patent: 4602327 (1986-07-01), LaViolette et al.
patent: 4615018 (1986-09-01), Sakano
patent: 4622547 (1986-11-01), Furukawa et al.
patent: 4641237 (1987-02-01), Yabushita et al.
patent: 4703420 (1987-10-01), Irwin
patent: 4742454 (1988-03-01), Robinson et al.
patent: 4757310 (1988-07-01), Katsara et al.
patent: 4906986 (1990-03-01), Takeda
"System Construction of CRT Controller Having Graphic Drawing Function", Nikkei Electronics, 1984, 5.21, pp. 225-227.

Affiliated with

Also associated with

Rating

Controller which allows direct access by processor to peripheral does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Controller which allows direct access by processor to peripheral, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controller which allows direct access by processor to peripheral will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-826617