JPS6437124A - Pulse width modulating signal generator - Google Patents
Pulse width modulating signal generatorInfo
- Publication number
- JPS6437124A JPS6437124A JP19257087A JP19257087A JPS6437124A JP S6437124 A JPS6437124 A JP S6437124A JP 19257087 A JP19257087 A JP 19257087A JP 19257087 A JP19257087 A JP 19257087A JP S6437124 A JPS6437124 A JP S6437124A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- pwm signal
- resolution
- counted
- pwm
- 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
Abstract
PURPOSE:To generate a PWM signal of high resolution without using a high frequency clock neither a long bit length counter by subjecting the resolution of a PWM signal generating means of low resolution to pulse width modulation furthermore in the period of PWM command data generation. CONSTITUTION:The clock pulse from a clock pulse generator 1 is counted by a counter 2, and the counted value of the counter 2 and PWM command data D1 are compared with each other by a digital comparator 3. Output pulses of the counter 2 are counted by a counter 4, and the counted value of the counter 4 and PWM command data D2 are compared with each other by a digital comparator 5. Outputs of these digital comparators 3 and 5 are processed by a NOR gate 7 and a D type flip flop 6, and a PWM signal where the resolution of the PWM signal outputted from the digital comparator 3 is enhanced is outputted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62192570A JP2674648B2 (en) | 1987-08-03 | 1987-08-03 | Pulse width modulation signal generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62192570A JP2674648B2 (en) | 1987-08-03 | 1987-08-03 | Pulse width modulation signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6437124A true JPS6437124A (en) | 1989-02-07 |
JP2674648B2 JP2674648B2 (en) | 1997-11-12 |
Family
ID=16293478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62192570A Expired - Lifetime JP2674648B2 (en) | 1987-08-03 | 1987-08-03 | Pulse width modulation signal generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2674648B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0493167A (en) * | 1990-08-09 | 1992-03-25 | Jason Inc | Adhesive and soft polishing tool and manufacture thereof |
US6310913B1 (en) | 1996-05-20 | 2001-10-30 | Asahi Kasei Kabushiki Kaisha | Circuit and method for modulating pulse width |
US6985986B2 (en) * | 2001-06-01 | 2006-01-10 | Microchip Technology Incorporated | Variable cycle interrupt disabling |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57155833A (en) * | 1981-03-23 | 1982-09-27 | Toshiba Corp | Digital-to-analog converting circuit |
JPS58130619A (en) * | 1982-01-29 | 1983-08-04 | Toshiba Corp | Digital-analog converter |
JPS5911026A (en) * | 1982-07-12 | 1984-01-20 | Yokogawa Hokushin Electric Corp | Digital-analog converter |
JPS61256826A (en) * | 1985-05-09 | 1986-11-14 | Sony Corp | Digital-analog converter |
JPS6242620A (en) * | 1985-08-20 | 1987-02-24 | Sanyo Electric Co Ltd | Pwm type d/a converting circuit |
-
1987
- 1987-08-03 JP JP62192570A patent/JP2674648B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57155833A (en) * | 1981-03-23 | 1982-09-27 | Toshiba Corp | Digital-to-analog converting circuit |
JPS58130619A (en) * | 1982-01-29 | 1983-08-04 | Toshiba Corp | Digital-analog converter |
JPS5911026A (en) * | 1982-07-12 | 1984-01-20 | Yokogawa Hokushin Electric Corp | Digital-analog converter |
JPS61256826A (en) * | 1985-05-09 | 1986-11-14 | Sony Corp | Digital-analog converter |
JPS6242620A (en) * | 1985-08-20 | 1987-02-24 | Sanyo Electric Co Ltd | Pwm type d/a converting circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0493167A (en) * | 1990-08-09 | 1992-03-25 | Jason Inc | Adhesive and soft polishing tool and manufacture thereof |
US6310913B1 (en) | 1996-05-20 | 2001-10-30 | Asahi Kasei Kabushiki Kaisha | Circuit and method for modulating pulse width |
US6985986B2 (en) * | 2001-06-01 | 2006-01-10 | Microchip Technology Incorporated | Variable cycle interrupt disabling |
Also Published As
Publication number | Publication date |
---|---|
JP2674648B2 (en) | 1997-11-12 |
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