JPH03111037U - - Google Patents
Info
- Publication number
- JPH03111037U JPH03111037U JP1875490U JP1875490U JPH03111037U JP H03111037 U JPH03111037 U JP H03111037U JP 1875490 U JP1875490 U JP 1875490U JP 1875490 U JP1875490 U JP 1875490U JP H03111037 U JPH03111037 U JP H03111037U
- Authority
- JP
- Japan
- Prior art keywords
- peak value
- antenna
- selects
- compares
- receiving device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
Description
第１図は、この考案によるダイバーシテイ受信
装置の一実施例を示すブロツク図、第２図と第３
図は第１図の実施例における各部信号の波形とタ
イミングを示す図、第４図は第１図のチユーナ３
の詳細構成ブロツク図、第５図は従来のダイバー
シテイ受信装置の動作を説明するための図である
。
１，１〜１，４……アンテナ、２……アンテナ
スイツチング回路、３……チユーナ、４……反転
増幅器、５……ピークホールド回路、６……コン
パレータ、７……ラツチ回路、８……タイミング
制御回路、９……切換アンテナ設定回路、１０…
…アンテナ切換パルス発生回路、３１……フロン
トエンド、３２……映像検波回路、３３……音声
検波回路。
FIG. 1 is a block diagram showing an embodiment of the diversity receiving device according to this invention, and FIGS.
The figure shows the waveform and timing of each part signal in the embodiment shown in Fig. 1, and Fig. 4 shows the tuner 3 shown in Fig. 1.
FIG. 5 is a diagram for explaining the operation of a conventional diversity receiving apparatus. 1, 1 to 1, 4...Antenna, 2...Antenna switching circuit, 3...Tuner, 4...Inverting amplifier, 5...Peak hold circuit, 6...Comparator, 7...Latch circuit, 8... ...Timing control circuit, 9...Switching antenna setting circuit, 10...
...Antenna switching pulse generation circuit, 31...Front end, 32...Video detection circuit, 33...Audio detection circuit.
補正 平２．３．２８
実用新案登録請求の範囲を次のように補正する
。Amendment March 28, 2002 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
複数のアンテナを切換パルスに応じて切り換え
選択し、選択されたアンテナからの受信信号レベ
ルを比較し、最も高い受信レベルのアンテナを選
択してチユーナに接続するダイバーシテイ受信装
置において、
前記切り換え選択されたアンテナからの受信信
号レベルに対応する直流信号のピーク値を所定の
時間幅を有するサンプルパルスによりサンプリン
グホールドするピークホールド回路と、
前記ピークホールド回路に保持されているピー
ク値レベルを比較し、最大ピーク値に対応するア
ンテナを選択する比較回路とを備え、
前記サンプルパルスの時間幅期間中に前記切換
パルスを各アンテナに供給するように構成されて
成ることを特徴とするダイバーシテイ受信装置。[Claims for Utility Model Registration] Diversity system that switches and selects multiple antennas in response to switching pulses, compares the reception signal levels from the selected antennas, selects the antenna with the highest reception level, and connects it to the tuner. The receiver includes: a peak hold circuit that samples and holds the peak value of the DC signal corresponding to the received signal level from the selected antenna by using a sample pulse having a predetermined time width; and a comparison circuit that compares peak value levels and selects the antenna corresponding to the maximum peak value, and is configured to supply the switching pulse to each antenna during the time width period of the sample pulse. diversity receiving device.
Claims (1)
選択し、選択されたアンテナからの受信信号レベ
ルを比較し、最も高い受信レベルのアンテナを選
択してチユーナに接続するダイバーシテイ受信装
置において、 前記切り換え選択されたアンテナからの受信信
号レベルに対応する直流信号のピーク値を所定の
時間幅を有するサンプルパルスによりサンプリン
グホールドするピークホールド回路と、 前記ピークホールド回路に保持されているピー
ク値レベルを比較し、最大ピーク値に対応するア
ンテナを選択する比較回路とを備え、 前記サンプルパルスの時間幅期間中に前記切換
パルスを各最大ピーク値対応のアンテナに供給す
るように構成されて成ることを特徴とするダイバ
ーシテイ受信装置。[Claims for Utility Model Registration] Diversity system that switches and selects multiple antennas in response to switching pulses, compares the reception signal levels from the selected antennas, selects the antenna with the highest reception level, and connects it to the tuner. The receiving device includes: a peak hold circuit that samples and holds a peak value of a DC signal corresponding to a received signal level from the selected antenna by using a sample pulse having a predetermined time width, and a peak value held in the peak hold circuit. a comparison circuit that compares peak value levels and selects the antenna corresponding to the maximum peak value, and is configured to supply the switching pulse to the antenna corresponding to each maximum peak value during the time width period of the sample pulse. A diversity receiving device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1875490U JPH0727708Y2 (en) | 1990-02-28 | 1990-02-28 | Diversity receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1875490U JPH0727708Y2 (en) | 1990-02-28 | 1990-02-28 | Diversity receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03111037U true JPH03111037U (en) | 1991-11-14 |
| JPH0727708Y2 JPH0727708Y2 (en) | 1995-06-21 |
Family
ID=31521899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1875490U Expired - Lifetime JPH0727708Y2 (en) | 1990-02-28 | 1990-02-28 | Diversity receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727708Y2 (en) |
-
1990
- 1990-02-28 JP JP1875490U patent/JPH0727708Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0727708Y2 (en) | 1995-06-21 |
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