JPS5459833A - Indicator driving system - Google Patents
Indicator driving systemInfo
- Publication number
- JPS5459833A JPS5459833A JP12661577A JP12661577A JPS5459833A JP S5459833 A JPS5459833 A JP S5459833A JP 12661577 A JP12661577 A JP 12661577A JP 12661577 A JP12661577 A JP 12661577A JP S5459833 A JPS5459833 A JP S5459833A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- driving
- indicator
- display
- 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.)
- Granted
Links
Landscapes
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE: To obtain a miniature driving circuit featuring the low power consumption by memorizing the indicator driving signal in the arithmetic process signal memory and giving the address synchronizing with the period driving the indicator.
CONSTITUTION: For the arithmetic process period, switch circuit 36 is turned on with RAM31 and 32 connected together, and the writing and reading are carried out by the signals of arithmetic process circuit 30 and write/read control circuit 33 in the equal way for both RAM31 and 32. At the completion of the operation, the data memorized finally is memorized in RAM31, and the display signal to be supplied to each segment of liquid crystal indicator 22 is memorized in RAM32 respectively. Driving signals s31Ws33 which are inverted in a fixed cycle are supplied from inversion circuit 23 to the surface electrode of the segment of indicator 22, and the signal given from selection signal generator circuit 39 is supplied to back electrodes h31Wh33 respectively. During the display period, circuit 36 is turned off, and the address to RAM32 is given by applying the signal sent from circuit 34 through switch circuit 35 and via signals h'31Wh'33 synchronized with the driving signal. Thus, the display is performed. Accordingly, the data varies only at the areas necessary for the display, reducing the power consumption
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12661577A JPS5459833A (en) | 1977-10-20 | 1977-10-20 | Indicator driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12661577A JPS5459833A (en) | 1977-10-20 | 1977-10-20 | Indicator driving system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5459833A true JPS5459833A (en) | 1979-05-14 |
| JPS6349238B2 JPS6349238B2 (en) | 1988-10-04 |
Family
ID=14939578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12661577A Granted JPS5459833A (en) | 1977-10-20 | 1977-10-20 | Indicator driving system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5459833A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5690338A (en) * | 1979-12-24 | 1981-07-22 | Seiko Epson Corp | Microcomputer |
| JPS59210497A (en) * | 1983-05-13 | 1984-11-29 | 株式会社日立マイコンシステム | Liquid crystal driver |
| JPS60233692A (en) * | 1984-05-07 | 1985-11-20 | 株式会社 富士電機総合研究所 | Computer data display system |
-
1977
- 1977-10-20 JP JP12661577A patent/JPS5459833A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5690338A (en) * | 1979-12-24 | 1981-07-22 | Seiko Epson Corp | Microcomputer |
| JPS6227411B2 (en) * | 1979-12-24 | 1987-06-15 | Seikoo Epuson Kk | |
| JPS59210497A (en) * | 1983-05-13 | 1984-11-29 | 株式会社日立マイコンシステム | Liquid crystal driver |
| JPH0467193B2 (en) * | 1983-05-13 | 1992-10-27 | Hitachi Maikuro Konpyuuta Enjiniaringu Kk | |
| JPS60233692A (en) * | 1984-05-07 | 1985-11-20 | 株式会社 富士電機総合研究所 | Computer data display system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6349238B2 (en) | 1988-10-04 |
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