JPH0457793U - - Google Patents
Info
- Publication number
- JPH0457793U JPH0457793U JP10017490U JP10017490U JPH0457793U JP H0457793 U JPH0457793 U JP H0457793U JP 10017490 U JP10017490 U JP 10017490U JP 10017490 U JP10017490 U JP 10017490U JP H0457793 U JPH0457793 U JP H0457793U
- Authority
- JP
- Japan
- Prior art keywords
- time
- frequency
- signal sound
- counting
- radio waves
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
Description
第１図はこの考案の一実施例を示す時刻自動調
整装置のブロツク図、第２図はラジオから放送さ
れる時報音の信号波形図、第３図及び第４図はク
ロツクＩＣに対するＣＰＵの時刻補正方法を示す
説明図、第５図は従来の時刻補正機能を備えた時
刻表示装置のブロツク図、第６図はクロツクＩＣ
の説明図である。
図において、９はラジオ受信回路、１０は４４
０Hz帯域通過フイルタ、１１は８８０Hz帯域通過
フイルタ、１２は４４０Hz検出回路、１３は８８
０Hz検出回路、１４はクロツクＩＣ、１５はＣＰ
Ｕ、１６は時刻設定スイツチ、１７は液晶駆動回
路、１８は液晶表示器である。なお、図中同一符
号は同一、または相当部分を示す。
Fig. 1 is a block diagram of an automatic time adjustment device showing an embodiment of this invention, Fig. 2 is a signal waveform diagram of a time signal broadcast from a radio, and Figs. 3 and 4 show the CPU time relative to the clock IC. An explanatory diagram showing the correction method, FIG. 5 is a block diagram of a time display device with a conventional time correction function, and FIG. 6 is a clock IC.
FIG. In the figure, 9 is a radio receiving circuit, 10 is 44
0Hz bandpass filter, 11 is 880Hz bandpass filter, 12 is 440Hz detection circuit, 13 is 88
0Hz detection circuit, 14 is clock IC, 15 is CP
U, 16 is a time setting switch, 17 is a liquid crystal drive circuit, and 18 is a liquid crystal display. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
時刻カウント手段と、放送電波を受信する受信手
段と、前記放送電波に含まれる第１の周波数から
なる予備時報音、及びこの予備時報音が送信され
て所定時間後に送信される第２の周波数からなる
本時報音を、それぞれ検出する第１及び第２の周
波数検出手段と、前記第１の周波数検出手段が予
備時報音を検出後所定時間経過して第２の周波数
検出手段が本時報音を検出したとき、前記時刻カ
ウント手段の時刻を補正する補正手段とを有する
ことを特徴とする時刻自動調整装置。 a time counting means for counting time based on a predetermined oscillation frequency; a receiving means for receiving broadcast radio waves; a preliminary time signal sound consisting of a first frequency included in the broadcast radio waves; First and second frequency detection means each detect a main time signal sound consisting of a second frequency that is transmitted after a certain period of time; An automatic time adjustment device comprising: a correction means for correcting the time of the time counting means when the second frequency detection means detects the main time signal sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10017490U JPH0457793U (en) | 1990-09-27 | 1990-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10017490U JPH0457793U (en) | 1990-09-27 | 1990-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457793U true JPH0457793U (en) | 1992-05-18 |
Family
ID=31842623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10017490U Pending JPH0457793U (en) | 1990-09-27 | 1990-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457793U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391782A (en) * | 1977-01-24 | 1978-08-11 | Shingo Kizai Kk | Timepiece time setting method and device therefor in time signal selective receiving apparatus |
| JPS5569085A (en) * | 1978-11-20 | 1980-05-24 | Ricoh Elemex Corp | Electronic wrist watch with automatic time correcting function |
| JPS59162481A (en) * | 1983-03-07 | 1984-09-13 | Mitsubishi Electric Corp | Timepiece circuit |
-
1990
- 1990-09-27 JP JP10017490U patent/JPH0457793U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391782A (en) * | 1977-01-24 | 1978-08-11 | Shingo Kizai Kk | Timepiece time setting method and device therefor in time signal selective receiving apparatus |
| JPS5569085A (en) * | 1978-11-20 | 1980-05-24 | Ricoh Elemex Corp | Electronic wrist watch with automatic time correcting function |
| JPS59162481A (en) * | 1983-03-07 | 1984-09-13 | Mitsubishi Electric Corp | Timepiece circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4358836A (en) | Electronic watch with an automatic time indication modifier | |
| JP3357564B2 (en) | Time generator | |
| JPH0443295U (en) | ||
| JPH01142284U (en) | ||
| JPS597276U (en) | Engine combustion timing detection device | |
| JPS6085431U (en) | radio receiver | |
| JPH022693U (en) | ||
| JPS6249791U (en) | ||
| JPS60139292U (en) | Electronic clock with temperature compensation function | |
| JPH01195387A (en) | Time counting device | |
| JPS63199365U (en) | ||
| JPH05226937A (en) | Demodulation circuit for high frequency magnetic field | |
| JPS6243921A (en) | Automatic time correcting device for electronic tuning car radio set with clock | |
| JPH0359747U (en) | ||
| JPS6041877U (en) | Ultrasonic vehicle height measurement device | |
| JPS59162481A (en) | Timepiece circuit | |
| JPS6096633U (en) | liquid crystal display device | |
| TH26312A (en) | Intermittent reception control device | |
| JPS5866743U (en) | receiving device | |
| TH12717B (en) | Intermittent reception control device | |
| JPS62155392U (en) | ||
| JPS60172443U (en) | Audio data transmission equipment | |
| JPS62207078A (en) | Muting circuit | |
| JPS60149265U (en) | Line instantaneous interruption detection device | |
| JPH0224628U (en) |