Synthesizer receiver

Details Synthesizer receiver Synthesizer receiver

1996-08-20

1998-05-26

Chin, Stephen

Pulse or digital communications

Receivers

4551803, 4551791, 4551861, 4551831, H03K 900, H04L 2706, H04L 2714, H04L 2722

Patent

active

057578605

ABSTRACT:
A synthesizer receiver for performing frequency conversion of a received signal using a signal formed in a PLL and altering a frequency division ratio of a variable frequency dividing circuit of said PLL, thereby to alter the frequency of said signal so as to change a receiving frequency, provided with: memories for storing data of the receiving frequency in each of a plurality of data areas; station selecting means having a plurality of station selector keys corresponding to the plurality of data areas of the memory, wherein, from a data area corresponding to the operated station selector key, the receiving data stored in this data area are read out so that the receiving frequency is selected; and data moving means having a buffer area for saving the data of the receiving frequency stored in the data area, wherein, when one data area among the plurality of data areas is selected and established, and thereafter, another data area among the plurality of data areas is selected and established, the data of the receiving frequency stored in that one data area are saved in the buffer area and a vacant area is formed in that another data area, and the receiving frequency data that have been saved in the buffer area are returned to that another data area.

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patent: 5537674 (1996-07-01), Kishimoto et al.
patent: 5628061 (1997-05-01), Shirakawa

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