CN201259751Y - Digital calendar having automatic time calibration function - Google Patents
Digital calendar having automatic time calibration function Download PDFInfo
- Publication number
- CN201259751Y CN201259751Y CNU200820188270XU CN200820188270U CN201259751Y CN 201259751 Y CN201259751 Y CN 201259751Y CN U200820188270X U CNU200820188270X U CN U200820188270XU CN 200820188270 U CN200820188270 U CN 200820188270U CN 201259751 Y CN201259751 Y CN 201259751Y
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- CN
- China
- Prior art keywords
- perpetual calendar
- radio
- time
- circuit
- integrated circuit
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a digital perpetual calendar with automatic time correction function, comprising a perpetual calendar integrated circuit chip, a perpetual calendar display circuit, a time signal extraction circuit, keystrokes and a radio. A time correcting signal input port and a radio broadcasting control port are arranged in the perpetual calendar integrated circuit chip; the perpetual calendar display circuit, the time signal extraction circuit, the keystrokes and the radio are all connected with the perpetual calendar integrated circuit chip; and the time signal extraction circuit is connected with the radio. When receiving continuous regular sharp hour time pulses, the perpetual calendar integrated circuit chip automatically adjusts the timepiece to be in a sharp hour and turns off the radio. The digital perpetual calendar acquires sharp hour time signals through the am radio and a frequency selection circuit; therefore, the perpetual calendar has automatic time correction function. The digital perpetual calendar is low in cost and is free of all limitations.
Description
Technical field
The utility model relates to digital perpetual calendar, relate in particular to have automatically and Beijing time function during the school digital perpetual calendar.
Background technology
Because crystal oscillator is subjected to the influence of environment such as temperature, the meeting frequency of occurrences is drifted about, thereby causes the error of clock.Current, the clock of automatic correcting time is mainly based on radio wave clock.The principle of radio wave clock is that it has an atomic emissions platform, periodic transmission signal.Radio wave clock is the timing product made from the precision of atom.The signal that transmitting station sends is not to send out outward all the time, but the emission of property at interval.So radio wave clock or Wave timepiece are actual to be receiver, receive the signal of atomic emissions platform.But, be subjected to the transmitting station restricted number, be difficult to cover whole areas, the signal in most of area is very weak, be difficult to receive, and its coded format is applied patent, can not at will utilize.Existing common perpetual calendar does not all have the function of automatic correcting time.
Summary of the invention
This practicality newly at the problem of existing automatic correcting time clock and the existence of common perpetual calendar, provides a kind of digital perpetual calendar with automatic correcting time function.
Digital perpetual calendar with automatic correcting time function of the present utility model, comprise that perpetual calendar integrated circuit (IC) chip, perpetual calendar display circuit, time signal extract circuit, button and radio, be provided with correcting delay signal input interface and radio broadcasting control interface in the perpetual calendar integrated circuit (IC) chip, perpetual calendar display circuit, time signal extract circuit, button all is connected with the perpetual calendar integrated circuit (IC) chip with radio, and time signal extracts circuit and is connected with radio.
Perpetual calendar integrated circuit (IC) chip of the present utility model has increased correcting delay signal input interface and radio broadcasting control interface, regularly controlling radio in every day before integral point opens, receiving broadcast signal, and extract circuit by time signal the perpetual calendar integrated circuit (IC) chip is sent in the pulse that the integral point time signal is shaped as rule, the integral point that the perpetual calendar integrated circuit (IC) chip the receives continuous regular pulse of giving the correct time will be adjusted into integral point with clock automatically, and closes radio.
The utility model obtains the integral point time signal by AM receiver and frequency selection circuit, makes perpetual calendar have the automatic correcting time function, and is with low cost.Because the sound (AM 640KHz) of China all has relay station throughout the country, it has covered whole places of China, and signal is free, is not subjected to any restriction.
Description of drawings
Accompanying drawing is a principle schematic of the present utility model.
Wherein, 1, the perpetual calendar integrated circuit (IC) chip, 2, the perpetual calendar display circuit, 3, time signal extracts circuit, 4, button, 5, radio.
Embodiment
As shown in drawings, the digital perpetual calendar with automatic correcting time function of the present utility model comprises that perpetual calendar integrated circuit (IC) chip 1, perpetual calendar display circuit 2, time signal with automatic correcting time function extract circuit 3, button 4 and radio 5.Wherein, be provided with correcting delay signal input interface and radio broadcasting control interface in the perpetual calendar integrated circuit (IC) chip 1, utilize the frequency selective characteristic of demoder to extract radio integral point time signal, its inside has identification integral point time signal and realizes the function of automatic correcting time, and can control the working time of radio 5.Perpetual calendar display circuit 2, time signal extract circuit 3, button 4 and radio 5 all with have perpetual calendar integrated circuit (IC) chip 1 and be connected.Time signal extracts circuit 3 and is connected with radio 5, and time signal extracts the integral point time signal that circuit 3 extracts radio broadcasting.Perpetual calendar integrated circuit (IC) chip 1 can be passed through the 4 adjustment times of button.
Claims (1)
1. digital perpetual calendar with automatic correcting time function, comprise that perpetual calendar integrated circuit (IC) chip, perpetual calendar display circuit, time signal extract circuit, button and radio, it is characterized in that: be provided with correcting delay signal input interface and radio broadcasting control interface in the perpetual calendar integrated circuit (IC) chip, perpetual calendar display circuit, time signal extract circuit, button all is connected with the perpetual calendar integrated circuit (IC) chip with radio, and time signal extracts circuit and is connected with radio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820188270XU CN201259751Y (en) | 2008-09-17 | 2008-09-17 | Digital calendar having automatic time calibration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820188270XU CN201259751Y (en) | 2008-09-17 | 2008-09-17 | Digital calendar having automatic time calibration function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201259751Y true CN201259751Y (en) | 2009-06-17 |
Family
ID=40773988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820188270XU Expired - Fee Related CN201259751Y (en) | 2008-09-17 | 2008-09-17 | Digital calendar having automatic time calibration function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201259751Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834209A (en) * | 2015-04-13 | 2015-08-12 | 长沙天穹电子科技有限公司 | Timing device with air quality monitoring and satellite automatic time correction |
| CN104850004A (en) * | 2015-04-13 | 2015-08-19 | 长沙天穹电子科技有限公司 | Digital clock with air quality monitoring |
-
2008
- 2008-09-17 CN CNU200820188270XU patent/CN201259751Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834209A (en) * | 2015-04-13 | 2015-08-12 | 长沙天穹电子科技有限公司 | Timing device with air quality monitoring and satellite automatic time correction |
| CN104850004A (en) * | 2015-04-13 | 2015-08-19 | 长沙天穹电子科技有限公司 | Digital clock with air quality monitoring |
| CN104850004B (en) * | 2015-04-13 | 2017-09-29 | 长沙天穹电子科技有限公司 | A kind of digital clock with air quality monitoring |
| CN104834209B (en) * | 2015-04-13 | 2017-11-03 | 长沙天穹电子科技有限公司 | A kind of time set with air quality monitoring and satellite automatic correcting time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20130917 |