Locking and detecting device of digital broadcasting receiver and method
A technology of a broadcast receiver and a detection method, which is applied in the direction of automatic power control, parts of color TV, parts of TV system, etc. Timing frequency and phase offset convergence processing and other issues, to prevent lock detection errors, more accurate convergence characteristics, and rapid lock processing.
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[0059] The configuration and functions of the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0060] Figure 4 It is a block diagram of a timing recovery device including a timing lock detector in the present invention.
[0061] Such as Figure 4 As shown, the timing recovery device in the present invention includes the following devices: the signal synchronization device 100, according to the degree of convergence, determines the band width of the timing recovery loop through a plurality of stages; the timing locking detection device 200, which can detect the locking .
[0062] Above-mentioned signal synchronizing device 100 is made up of following several stages: Timing error detection device 101, receives baseband signal, detects timing error with this; Gain selection device 103, receives above-mentioned timing error value, and selects loop gain according to each stage, determines thus The band width of the timi...
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