TIMING PULSE GENERATING CIRCUIT

Title:

TIMING PULSE GENERATING CIRCUIT

Document Type and Number:

Japanese Patent JPH08307216

Kind Code:

A

Abstract:

PURPOSE: To generate a timing pulse advanced in phase from an input pulse by a prescribed time.

CONSTITUTION: A switch 9 is turned off while an input pulse A is in a high level and a capacitor 7 is charged by a constant current from a voltage source 1. While the input pulse A is in a low level, the switch 9 is turned on, the charged in the capacitor 7 is discharged and a sawtooth wave is outputted to an output terminal of an operational amplifier 5. The operational amplifier 13 invert an input, a peak hold circuit 17 peak holds the inverted sawtooth wave to obtain a DC voltage of a peak level, and a subtractor circuit 21 subtracts a DC voltage of a constant voltage source 19 from its DC voltage above. A comparator 23 generates a pulse with a width of a period when the level of the sawtooth wave from the operational amplifier 13 is higher than the DC voltage from the subtractor circuit 21.

Inventors:

INOUE HITOSHI

Application Number:

JP11037095A

Publication Date:

November 22, 1996

Filing Date:

May 09, 1995

Export Citation:

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Assignee:

TOSHIBA CORP

International Classes:

H04N9/28; H03K4/06; H03K4/12; H03K4/48; (IPC1-7): H03K4/06; H03K4/12; H03K4/48

Attorney, Agent or Firm:

Norio Ogo

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