Title:
CLOCK GENERATOR
Document Type and Number:
Japanese Patent JPS57170630
Kind Code:
A
Abstract:
The invention relates to a clock signal generating device comprising a crystal fundamental clock signal generator (GG) and a digital phase shifter (Ph), which is controlled by setting pulses and which follows the crystal fundamental clock signal generator, for communication devices, particularly radio devices. To correct the frequency drift of the crystal (QZ) for achieving an improved frequency stability of the clock pulse sequence occurring at the output of the digital phase shifter, a temperature discriminator (TD) is provided. The temperature discriminator receives information on the environmental temperature of the crystal via a temperature sensor (TS) and derives from this corresponding setting pulses for the digital phase shifter.
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Inventors:
MANFUREETO HANNI
BOODO RITSUTENAUAA
BOODO RITSUTENAUAA
Application Number:
JP4305382A
Publication Date:
October 20, 1982
Filing Date:
March 19, 1982
Export Citation:
Assignee:
SIEMENS AG
International Classes:
G04F5/04; H03B5/32; H03L1/02; (IPC1-7): G04F5/00; H03B5/04; H03B5/32; H03L1/02
Domestic Patent References:
| JPS5328465A | 1978-03-16 | |||
| JPS5435768A | 1979-03-16 |