JPS5462808A - Head loading system - Google Patents
Head loading systemInfo
- Publication number
- JPS5462808A JPS5462808A JP12927077A JP12927077A JPS5462808A JP S5462808 A JPS5462808 A JP S5462808A JP 12927077 A JP12927077 A JP 12927077A JP 12927077 A JP12927077 A JP 12927077A JP S5462808 A JPS5462808 A JP S5462808A
- Authority
- JP
- Japan
- Prior art keywords
- head
- time
- read
- write
- loaded
- 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
Abstract
PURPOSE: To reduce the loss of set-up time of continuous read/write instructions and improve the processing speed by programmably delaying the head unload time after access.
CONSTITUTION: When a read/write instruction is executed, a head loading signal is emitted from an OR 2 and the head is loaded. At the same time the value having been set in the program of a register 4 is set in the counter 3, and FF 1 is also set. Even if this instruction is finished, the FF 1 is held set and therefore the head is held loaded, during which time, it may be set as desired by changing the value of the registre 4. At this time, a continuous read/write instruction is given and if it is before the counter 3 becomes "0", the head is held loaded and therefore the read/ write may be continued without taking head set-up time. Thereby, processing speed is considerably improved.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12927077A JPS5462808A (en) | 1977-10-28 | 1977-10-28 | Head loading system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12927077A JPS5462808A (en) | 1977-10-28 | 1977-10-28 | Head loading system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5462808A true JPS5462808A (en) | 1979-05-21 |
Family
ID=15005422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12927077A Pending JPS5462808A (en) | 1977-10-28 | 1977-10-28 | Head loading system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5462808A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5872762U (en) * | 1981-11-09 | 1983-05-17 | ソニー株式会社 | still image recording camera |
JPH025166U (en) * | 1989-04-01 | 1990-01-12 | ||
JPH02185772A (en) * | 1989-11-02 | 1990-07-20 | Sony Corp | Still picture recording camera |
-
1977
- 1977-10-28 JP JP12927077A patent/JPS5462808A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5872762U (en) * | 1981-11-09 | 1983-05-17 | ソニー株式会社 | still image recording camera |
JPS6317073Y2 (en) * | 1981-11-09 | 1988-05-16 | ||
JPH025166U (en) * | 1989-04-01 | 1990-01-12 | ||
JPH0337191Y2 (en) * | 1989-04-01 | 1991-08-06 | ||
JPH02185772A (en) * | 1989-11-02 | 1990-07-20 | Sony Corp | Still picture recording camera |
JPH0444826B2 (en) * | 1989-11-02 | 1992-07-22 | Sony Corp |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5435654A (en) | Information processing unit | |
JPS5462808A (en) | Head loading system | |
JPS5293243A (en) | Data processing unit performing preceding control | |
JPS5242337A (en) | Data processing unit | |
JPS5271951A (en) | Branch system for micro program | |
JPS5259537A (en) | Data processor | |
JPS51142936A (en) | Execution method of instructions | |
JPS5255449A (en) | Microprocessor | |
JPS5392638A (en) | Information processing unit | |
JPS5617447A (en) | Instruction-mode selection system | |
JPS5383543A (en) | Microprogram control unit | |
JPS5487144A (en) | Linking processing method for data | |
JPS5430753A (en) | Micro-progran control system | |
JPS52129413A (en) | Vtr cassette automatic changer | |
JPS5237685A (en) | Servo amplifier | |
JPS52120727A (en) | Pattern input unit | |
JPS5583941A (en) | Microprogram system | |
JPS5475963A (en) | Information processing unit | |
JPS5282043A (en) | Data processing unit runaway detection | |
JPS52132606A (en) | Audio response unit | |
JPS5258438A (en) | Interrupt control unit for computer | |
JPS5319733A (en) | Instruction execution times recording system | |
JPS5674736A (en) | Communication controlling device by microprogram controlling system | |
JPS5383542A (en) | Memory unit control system for arithmetic processor | |
JPS55135927A (en) | Memory write-in control system |