JPS564864A - Address control unit - Google Patents
Address control unitInfo
- Publication number
- JPS564864A JPS564864A JP7988479A JP7988479A JPS564864A JP S564864 A JPS564864 A JP S564864A JP 7988479 A JP7988479 A JP 7988479A JP 7988479 A JP7988479 A JP 7988479A JP S564864 A JPS564864 A JP S564864A
- Authority
- JP
- Japan
- Prior art keywords
- address
- value
- counter
- counters
- segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Image Input (AREA)
Abstract
PURPOSE: To enable various scannings with the clock rate, by providing every two counters toward X, Y directions for the segment scanning, adding the value with addition and performing the vector scanning with other adder.
CONSTITUTION: The X, Y direction main address counters 1a, 1c represent the X, Y direction segment head address at segment scanning and the X, Y direction subsidiary address counters 1b, 1d show the X and Y direction address in the segment. The count value of the main and subsidiary is added at the adders 2a, 2b, and when the value is taken as the address controller outputs 32, 33, the absolute address of X-Y two dimensional picture plane is obtained as the counter value. At vector scanning, the X direction address is the sum of the counters 1a and 1b and the Y direction address increases the value of the counter 1d by 1 when the value of the counter 1b is equal to the value loaded in the latch 4b by using the comparator 3b and the counter 1d, and it is summed with the counter 1c.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7988479A JPS564864A (en) | 1979-06-22 | 1979-06-22 | Address control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7988479A JPS564864A (en) | 1979-06-22 | 1979-06-22 | Address control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS564864A true JPS564864A (en) | 1981-01-19 |
Family
ID=13702674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7988479A Pending JPS564864A (en) | 1979-06-22 | 1979-06-22 | Address control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564864A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59149554A (en) * | 1983-02-08 | 1984-08-27 | Toshiba Corp | Space filtering device |
JPH0391045A (en) * | 1989-09-04 | 1991-04-16 | Sharp Corp | Address generating circuit for picture memory |
-
1979
- 1979-06-22 JP JP7988479A patent/JPS564864A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59149554A (en) * | 1983-02-08 | 1984-08-27 | Toshiba Corp | Space filtering device |
JPH0391045A (en) * | 1989-09-04 | 1991-04-16 | Sharp Corp | Address generating circuit for picture memory |
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