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Receiving module and receiving device using the same

A technology of receiving module and receiving part, which is applied in the direction of electrical components, color TV parts, TV system parts, etc., and can solve the problems of long time, large difference between initial value and convergence value, etc.

Inactive Publication Date: 2009-11-11
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the existing receiving module 103 is switched from the single reception (non-diversity reception) state in which the signal is received by the first reception unit 106 to the diversity reception state in which the signal is received by the first reception unit 106 and the second reception unit 107, And when the difference between the initial value of the AGC voltage and the convergence value is relatively large, it takes a long time, for example, 100 milliseconds, from the start of operation of the second receiving unit 107 to the final convergence of the AGC voltage supplied to the second amplifying unit 116 to a certain value. time

Method used

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  • Receiving module and receiving device using the same
  • Receiving module and receiving device using the same
  • Receiving module and receiving device using the same

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Refer below figure 1 Embodiment 1 of the present invention will be described. figure 1 It is a block diagram of the receiving unit in Embodiment 1 of the present invention. figure 1 Among them, the receiving unit includes a first antenna 1, a second antenna 2, a receiving module 3 connected to the output side of the first antenna 1 and the second antenna 2, a signal processing unit 4 connected to the output side of the receiving module 3, and The display unit 5 is connected to the output side of the signal processing unit 4 .

[0024] The receiving module 3 includes a first receiving part 6 and a second receiving part 7 connected to the first antenna 1 and the second antenna 2 respectively for diversity reception, and the output of the first receiving part 6 and the second receiving part 7 The demodulator 8 connected to the side.

[0025] The first receiving section 6 receives a signal externally received by the first antenna 1, such as a terrestrial digital broad...

Embodiment 2

[0039] Refer to the following figure 2 The receiving module in the second embodiment and the receiving unit using the receiving module will be described. Here, it is the same as that of Example 1 that is not particularly described.

[0040] The difference between embodiment 2 and embodiment 1 is that, as figure 2 As shown in , the switch section 39 is provided between the first loop filter 23 and the second loop filter 31 .

[0041] When the diversity control section 17 switches the receiving module 3 from the single reception state to the diversity reception state, the switch section 39 supplies the signal level detected by the first detection section from the first loop filter 23 as an amplification adjustment signal to the second loop filter 31 .

[0042] When the characteristics of the first receiving unit 6 and the characteristics of the second receiving unit 7 are different, the conversion characteristics of the first conversion unit 24 and the conversion characterist...

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Abstract

The demodulation part (8) in the receiving module (3) of the present invention supplies the signal generated based on the signal level detected by the first detection part (22) to the second amplifying part (16) as an amplification adjustment signal. Thus, the AGC voltage supplied to the second amplifying section (16) approaches a final stable constant value when the second receiving section (7) starts to operate. Therefore, the AGC voltage supplied to the second amplifying section (16) is stabilized from a value close to the constant value to a constant value. Therefore, the time from when the second receiving unit (7) starts to operate until the AGC voltage supplied to the second amplifying unit (16) finally converges to a constant value is shortened.

Description

technical field [0001] The invention relates to a receiving module for receiving signals and a receiving unit using the receiving module. Background technique [0002] Refer below Figure 4 Describe the existing receiver modules. [0003] Figure 4 Block diagram for the existing receiver unit. Figure 4 Among them, the receiving module 103 includes a first receiving unit 106 and a second receiving unit 107 that perform diversity reception, and a demodulation unit that is connected to the output side of the first receiving unit 106 and the second receiving unit 107 and is composed of a demodulation LSI, etc. 108. The demodulation unit 108 includes a first detection unit 122 that detects the level of a signal from the first reception unit 106 , and a second detection unit 129 that detects the level of a signal from the second reception unit 107 . The first receiving unit 106 further includes a first amplifying unit 112 for amplifying a received signal based on an AGC (Automa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16H04N5/44H04B7/08
Inventor 槻尾泰信尾关浩明
Owner PANASONIC CORP
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