Document Type and Number:
Japanese Patent JPS62159006
Kind Code:
U
Abstract:
A circuit for compensating change in delay time of a delay circuit due to variation in temperature employs, as a phase shifter of a pulse FM detection circuit, a delay circuit whose delay time is subject to change due to variation in temperature and can be controlled in response to a control signal. A dc component in an output of this pulse FM detection circuit is compared with a preset reference value and a resulting comparison output is used for controlling the delay time of the delay circuit and thereby compensating the temperature characteristic of the delay time. In a device using plural delay circuits, these delay circuits can be disposed on the same substrate and the delay times of these delay circuits can be controlled by the same comparison output. Since a signal which is handled by a delay circuit is utilized for the temperature compensation, an accurate temperature compensation can be realized with a simple circuit construction.
Application Number:
JP4749986U
Publication Date:
October 08, 1987
Filing Date:
March 31, 1986
Export Citation:
International Classes:
G11B7/005; G11B7/09; G11B20/00; G11B20/10; H03D3/06; H03D3/18; H03K5/13; H03K5/133; H03K5/134; H03K9/06; H03K19/003; H04N5/922; H04N9/802; H04N9/88; H03K5/00; (IPC1-7): H03D3/06; H03K5/13; H03K9/06; H04N5/92
Domestic Patent References:
| JPS6137617B2 | 1986-08-25 | |||
| JPS607208A | 1985-01-16 | |||
| JPS57201308A | 1982-12-09 |
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