JP5262776B2 - Time information receiving terminal and time information transmitting / receiving system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a time information receiving terminal, a time information transmitting apparatus and a time information transmitting and receiving system, capable of transmitting and receiving time information by using a format of a standard wave, and eliminating a problem occurring when the receiving terminal moves across a time zone. <P>SOLUTION: The time information transmitting and receiving system includes: the time information transmitting apparatus which transmits a time code so as to be carried by a radio wave; and the time information receiving terminal which receives the time code. The time information transmitting apparatus is configured to generate and transmit a time code updated from a time code according to a standard wave format by adding a time difference code at a code position at which the standard wave format represents a fixed value. The time information receiving terminal has the functions of reading the time code and acquiring the time information (S4), and reading the newly added time difference code (S5, S9). <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a time information receiving terminal that receives a time code, and a time information transmitting / receiving system.

  A radio timepiece that receives a standard radio wave including a time code and automatically corrects the time is known. Long-wave standard radio waves are transmitted in multiple countries, but the modulation method and frequency differ from country to country, and the time code format also differs from country to country. The watch cannot receive time information by receiving the standard radio waves of each country. In that case, the user needs to manually correct the time as necessary.

  In order to deal with such a problem, Patent Document 1 discloses other countries and other countries where the receiver is installed using position information and time information received by a receiver of GNSS (Global Navigation Satellite System). There has been proposed a time information transmission device that converts local time information into a time code in, for example, a Japanese standard radio wave format and transmits the time code. By installing such a time information transmission device in another country, even a radio clock that supports only Japanese standard radio waves can receive the time information of that country in another country and automatically correct the time. .

  In recent years, electronic clocks have become more multifunctional. For example, electronic clocks having a world time function capable of displaying the time of each city in the world are also known. The world time function is, for example, the time of a predetermined time zone (for example, Japan) in which a standard radio wave can be received is measured as the home time in the clock, and each city in the world is selected by a user operation. The time of the selected city is calculated from the time difference information of the selected city and the time of the home time stored in, and is displayed and output.

  In the United States having a plurality of time zones in one country, time information of UTC (Coordinated Universal Time) is transmitted from one standard radio wave transmission station on the standard radio wave. Therefore, a radio timepiece that supports American standard radio waves cannot display the correct time just by receiving the standard radio waves. The time zone is set and the time code indicates which time zone it is in. The time of the set time zone is displayed by subtracting the time difference of the corresponding time zone from the UTC time.

JP 2007-93562 A

  The above-mentioned time information sending device, for example, only converts local (other countries) time information into a Japanese time code and transmits it, so that the time information is in another country, and any time zone Information such as whether it is a thing is not shown.

  Therefore, in the electronic timepiece having the world time function, when the time code transmitted from the above time information transmitting device is received in another time zone such as Dubai, for example, the other time zone received is received inside the timepiece. Is misunderstood as home time (for example, Japanese time). Therefore, when the local time (for example, Dubai) time is displayed by the world time function, there is a problem that a completely different time is displayed.

  In addition, with radio timepieces that support American standard radio waves, for example, when moving from New York to Los Angeles, the user can change the time zone setting from New York to Los Angeles to display the local time correctly. There was a problem that had to be done.

An object of the present invention is to be able to transmit and receive time information using a standard radio wave format currently being transmitted in each country in the world, and to eliminate the inconvenience that occurs when a receiving terminal moves across time zones. time information receiving terminal, and to provide a time information transmitting and receiving system when.

In order to achieve the above object, the present invention provides
A time information receiving unit that receives a radio wave including a time code and obtains the time code;
First code interpretation means for obtaining time information by interpreting the time code acquired by the time information receiver according to a standard radio wave format;
The time difference code indicating the time difference information of the radio wave transmission region and the transmission type code indicating the type of the radio wave transmission source, which are added to the code position which is a fixed value of the time code acquired by the time information receiving unit , are read. Second code interpretation means;
Time display means for displaying the time based on the time information read by the first code reading means;
A sign display means for displaying a world time sign indicating whether the time of the time display means is a time in a predetermined country or a time outside the predetermined country;
Based on the transmission type code read by the second code reading means, it is determined that the radio wave transmission source is a time information transmission device that adds the time difference code and the transmission type code to the time code and transmits the time code. The time information is based on whether or not the time difference information based on the time difference code matches the preset time difference information of the predetermined country. Control means for controlling the display content of the sign display means,
A time information receiving terminal comprising:
The present invention also provides:
A time information receiving unit that receives a radio wave including a time code and obtains the time code;
First code interpretation means for obtaining time information by interpreting the time code acquired by the time information receiver according to a standard radio wave format;
The time difference code indicating the time difference information of the radio wave transmission region and the transmission type code indicating the type of the radio wave transmission source, which are added to the code position which is a fixed value of the time code acquired by the time information receiving unit, are read. Second code interpretation means;
Time display means for displaying the time based on the time information read by the first code reading means;
Area information display means for displaying area information indicating in which area the time of the time display means is;
Based on the transmission type code read by the second code reading means, it is determined that the radio wave transmission source is a time information transmission device that adds the time difference code and the transmission type code to the time code and transmits the time code. The time information is determined by comparing the time difference information based on the time difference code with the time difference information of the set region, and the region information is determined according to the determination result. Control means for controlling the display content of the display means;
A time information receiving terminal comprising:
The present invention also provides:
In a time information transmission / reception system comprising: a time information transmission device that transmits a time code on a radio wave; and a time information reception terminal that receives the radio wave and acquires the time code.
The time information sending device is
For a time code obtained by encoding time information according to the standard radio wave format, a time difference code indicating the time difference information of the radio wave transmission area and the type of the radio wave transmission source are indicated at a code position which is a fixed value of the standard radio wave format. Time code generating means for generating a time code updated by adding a type code;
Radio wave transmission means for transmitting the time code generated by the time code generation means on radio waves; and
With
The time information receiving terminal is
Radio wave receiving means for receiving the radio wave and obtaining the time code;
First interpretation means for interpreting the time code obtained by the radio wave reception means to obtain time information;
Second interpretation means for interpreting a time difference code representing a time difference information of a radio wave transmission area and a transmission type code representing a type of a radio wave transmission source among time codes acquired by the radio wave reception means;
Time display means for displaying the time based on the time information read by the first code reading means;
A sign display means for displaying a world time sign indicating whether the time of the time display means is a time in a predetermined country or a time outside the predetermined country;
When it is determined that the radio wave transmission source is a time information transmission device based on the transmission type code read by the second code reading means, the time difference of the predetermined country set with the time difference information based on the time difference code Control means for determining whether or not the time information is the time of the predetermined country according to whether or not the information matches, and controlling the display content of the sign display means according to the determination result;
It is a time information transmission / reception system characterized by comprising.
The present invention also provides:
In a time information transmission / reception system comprising: a time information transmission device that transmits a time code on a radio wave; and a time information reception terminal that receives the radio wave and acquires the time code.
The time information sending device is
For a time code obtained by encoding time information according to the standard radio wave format, a time difference code indicating the time difference information of the radio wave transmission area and the type of the radio wave transmission source are indicated at a code position which is a fixed value of the standard radio wave format. Time code generating means for generating a time code updated by adding a type code;
Radio wave transmission means for transmitting the time code generated by the time code generation means on radio waves; and
With
The time information receiving terminal is
Radio wave receiving means for receiving the radio wave and obtaining the time code;
First interpretation means for interpreting the time code obtained by the radio wave reception means to obtain time information;
Second interpretation means for interpreting a time difference code representing a time difference information of a radio wave transmission area and a transmission type code representing a type of a radio wave transmission source among time codes acquired by the radio wave reception means;
Time display means for displaying the time based on the time information read by the first code reading means;
Area information display means for displaying area information indicating in which area the time of the time display means is;
When it is determined that the radio wave transmission source is a time information transmission device based on the transmission type code read by the second code reading means, the time difference information based on the time difference code and the time difference information of the set region And a control means for determining in which area the time information is the time of the time, and controlling the display content of the area information display means according to the determination result;
It is a time information transmission / reception system characterized by comprising.

According to the present invention, the time code is expressed by the time difference code indicating the time difference information of the radio wave transmission region not included in the standard radio wave format added to the time code and the transmission type code indicating the type of the radio wave transmission source. It can indicate whether it is transmitted from a transmitting station or transmitted from another device. As a result, it is possible to perform control that eliminates various inconveniences associated with moving across time zones.

It is a block diagram which shows the whole structure of the radio timepiece as a time information receiving terminal of the embodiment of the present invention. It is a block diagram which shows the whole structure of the time information transmission apparatus of embodiment of this invention. It is explanatory drawing which shows the format of the time code transmitted / received in this embodiment. It is a data chart which shows the specific example of the time difference code / time difference / time zone name correspondence table stored in the ROM of the radio time signal. It is a table | surface which shows the content of the repeater discrimination code added in the time code of this embodiment. It is a flowchart which shows the control procedure of the time correction process performed by CPU of a radio timepiece. It is explanatory drawing which shows the example of a change of the display of a radio timepiece at the time of moving a time zone.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an overall configuration of a radio timepiece as a time information receiving terminal according to an embodiment of the present invention.

  The time information transmission / reception system according to the embodiment of the present invention has a radio timepiece 1 as a time information receiving terminal shown in FIG. 1 and a radio wave including a time code according to a predetermined standard radio wave (for example, Japanese standard radio wave). The time information transmission device 100 (see FIG. 2) that transmits to the area is configured.

  The radio timepiece 1 is an electronic timepiece having a function of receiving a standard radio wave and automatically correcting the time. As shown in FIG. 1, the radio timepiece 1 receives a standard radio wave via an antenna AN1 (time (Information receiving unit) 11, a display unit 12 for displaying time and additional information, and a CPU (Central Processing Unit) 13 as a control means for reading a time code included in the standard radio wave and controlling the clock as a whole. An oscillation circuit unit 14 that generates a signal at regular intervals from an oscillation signal of a predetermined frequency, a clock circuit unit 15 that counts the signal by counting the signal of the oscillation circuit unit 14, and an input for inputting an operation command from the outside The unit 16 includes a RAM 17 that stores various setting data and the like, and a ROM 18 that stores control data and control programs.

  The reception circuit unit 11 is configured to receive, for example, standard radio waves transmitted from Japanese standard radio wave transmission stations and standard radio waves of a plurality of types transmitted from various transmission stations around the world. In addition, it is good also as a structure which can receive only a Japanese standard radio wave.

  The timing circuit unit 15 updates the timing data as time passes by counting the signal of the oscillation circuit unit 14, and corrects the timing time or changes the timing time by writing the time data from the CPU 13. It is possible to do.

  The RAM 17 is provided with a world time setting unit 17a and a home time setting unit 17b as part of a storage unit that stores various data. In the home time setting unit 17b, information related to the time counted as a reference inside the watch is set. Specifically, any one of time zones in which time information can be acquired by using the standard radio wave is made selectable by the user, and information indicating the selected time zone is set. For example, when staying in Japan for most of the time, the Japanese time zone is selected.

  In the home time setting unit 17b, one time zone is always set, and the time of the set time zone is measured by the time measuring circuit unit 15. In addition, the receiving circuit unit 11 and the CPU 13 are configured to receive radio waves on a reception channel corresponding to standard radio waves in a set time zone, or to read a time code in a corresponding format.

  The world time setting unit 17a stores setting information necessary for the world time display mode. The world time display mode is a mode for displaying time in a time zone different from the home time. In the world time setting unit 17a, flag information indicating whether or not the time is in the world time display mode, time zone information indicating which time zone is displayed, country and city indicating the target time zone, and the like are displayed. Symbol information, time difference information indicating the time difference between the target time zone and the time zone of the home time are stored. For example, if you stay in Japan most of the time and move frequently to other countries in a short period of time, leave the home time set in Japan, set the destination foreign country in world time, and set the foreign time. Or display.

  The ROM 18 receives a standard radio wave from the time display program 18 a for displaying the home time and the world time on the display unit 12 based on the time measurement data of the time measurement circuit unit 15 among the various control programs, and the reception circuit unit 11. The time correction program 18b for correcting the time based on the reproduced time code is stored. In addition, a correspondence table 18c representing a time difference and a time zone name corresponding to a time difference code described later is stored among various control data.

  The CPU 13 executes various control processes by executing the control program in the ROM 18. For example, by executing the time display program 18a, in the home time display mode, the date display 22, the time display 23, the day display 21 and the like are performed on the display unit 12 according to the time measurement data of the time measurement circuit unit 15 ( FIG. 7 (a)). In the world time display mode, the display unit 12 displays a symbol display 25 indicating the world time display mode and a symbol display 26 indicating the target country (or city) of the world time display. The time display 27 of the world time is performed by time data obtained by adding or subtracting the time difference set from the time measurement data (see FIG. 7B).

  Further, the CPU 13 executes an operation input processing program (not shown) so that when an operation command is input via the input unit 16, various settings can be changed or handled according to the content of the operation command. To start the process. For example, when the operation input for forced radio wave reception is performed, the time correction program 18b is started, or when the operation input for home time setting change is performed, the setting information of the home time setting unit 17b is rewritten. When the world time setting operation is performed, the setting information of the home time setting unit 17b is updated to change the time display mode from the home time display mode to the world time display mode.

  Further, the CPU 13 executes the time correction program 18b to operate the receiving circuit unit 11 to receive the standard radio wave, as will be described in detail later. The CPU 13 reads the reproduced time code and reads the time code of the time measuring circuit unit 15. Correct the time data or read the repeater identification code and time difference code added to the time code according to a format different from the standard radio wave format, and automatically change the world time setting accordingly It has become.

  FIG. 2 is a block diagram showing the overall configuration of the time information transmission apparatus according to the embodiment of the present invention.

  The time information transmission device 100 is a device that is installed in a foreign country, for example, and transmits local time information to a certain area in a format that conforms to Japanese standard radio waves. This time information transmitting apparatus 100 includes a radio wave receiving unit 101 that receives a local standard radio wave via an antenna AN2 and reproduces a time code, and a time information determination unit 102 that reads the local time code and acquires time information. A reception timing control unit 103 that activates the radio wave reception unit 101 and the time information determination unit 102 every predetermined time, an oscillator 105 and a frequency dividing circuit 106 for generating a time clock, and a time from the time information determination unit 102 Information is written and the timekeeping clock is counted to count the local time, and the timekeeping data of the timekeeping part 104 is input to conform to the time code of Japanese standard radio waves and partly changed. A time code generation unit 107 that generates a time code in the format and a time difference code (described later) required for generating the time code. Including a time difference code storage unit 108 and a repeater determination code storage unit 109 for storing each of the repeat determination codes and a modulation unit 110 for generating a transmission signal from the generated time code, and outputting a transmission signal via the antenna AN3 A transmission unit 111 and the like are provided.

  The radio wave reception unit 101 and the time information determination unit 102 are configured to acquire local time information. This part can be changed to a configuration in which local time information is obtained from a time server via the Internet, for example. Alternatively, without adding a configuration for acquiring local time information, the time of the time measuring unit 104 may be manually adjusted, and then the local time may be measured by the operation of the time measuring unit 104.

  For example, the modulation unit 110 and the radio wave transmission unit 111 are configured to convert the generated time code into a transmission signal having the same frequency (for example, 40 kHz or 60 kHz) as that of the Japanese standard radio wave and output it. In addition, for example, in order to prevent interference with a standard radio wave transmitted locally, a transmission signal having a frequency not used for the standard radio wave such as 50 kHz may be output. In this case, the receiving circuit unit 11 of the radio-controlled timepiece 1 can also be dealt with by adopting a configuration capable of receiving signals of this frequency.

  FIG. 3 is an explanatory diagram showing the format of the time code generated by the time code generation unit 107.

  The time code generation unit 107 encodes local time information and the like into a time code in the format shown in FIG. This format is the same as the Japanese standard radio wave format except for the code parts A to D in FIG. 3, and the date, day of the week, and hour and minute information by the code part excluding the code positions A to D. Is represented.

  In this time code format, as a code of another format that is not in the Japanese standard radio wave format, the time difference codes W0 to W5 in which the local time difference information is represented and the radio waves are transmitted to the code positions A to D. Repeater identification codes (transmission type codes) R0 and R1 representing the type of the device being added are added. These code positions A to D are code portions whose data values are fixed to “0” in the standard Japanese radio wave format and are not used as codes representing information. Therefore, even if the time difference codes W0 to W5 and the repeater determination codes R0 and R1 are added to these code positions A to D, the originally added information such as time information is not affected.

  In the Japanese time code, the frame position of the time code is represented by the M signal and the P signal whose pulse width is 0.2 seconds long, and the data value “1” is represented by the signal whose pulse width is 0.5 seconds long. ”And a data value“ 0 ”is represented by a signal having a pulse width of 0.8 seconds. The rise of the M signal is set to the 00 second point, and the rise of each pulse is set to the comma zero second point.

  FIG. 4 shows a data chart showing the time difference code correspondence table 18c stored in the ROM 18 of the radio timepiece 1, and FIG. 5 shows a chart for explaining the repeater discrimination codes R0 and R1.

  As shown in the data chart of FIG. 4, the time difference codes W0 to W5 are codes representing any one of a plurality of time zones obtained by classifying various parts of the world into time discrimination. If the parts of the world are divided into time discriminators, there are 39 time zones, so all of these can be identified by 6-bit data. The leading one bit of the time difference codes W0 to W5 is set to indicate the sign of the time difference time.

  In the radio timepiece 1 that receives and interprets the time difference codes W0 to W5, a data chart shown in FIG. 4 is stored. In this data chart, time difference codes W0 to W5, information on time difference times (time difference times with UTC), and time zone names corresponding to the time difference codes are registered. The time zone name is used to display a symbol on the display unit 12 in the world time display mode, and a country name, a district name, a representative city name, or the like is registered. In FIG. 4, the full name is shown for easy understanding, but in reality, a time zone name (for example, “NYC” for New York) abbreviated to three letters of the alphabet is registered. The time zone name displayed as a symbol on the display unit 12 may be configured such that when there are many countries and cities having the same time difference, the country and city to be displayed can be selected according to the user's preference.

  As shown in FIG. 5, the repeater discrimination codes R0 and R1 indicate whether the type of the device that is transmitting the radio wave is, for example, an NTP (network time protocol) -based repeater, a booster-type repeater, It is a 2-bit code that indicates whether the device is an inner-sound system or a repeater. The code value “00” indicating that it is not a repeater is defined to be the same value as the standard time code value transmitted from the standard radio wave transmitting station.

  Next, operations of the time information transmitting apparatus 100 and the radio timepiece 1 having the above-described configuration will be described.

  In the time information transmitting device 100, for example, a code representing the device type is written in the repeater determination code storage unit 109 at the time of initial setting before factory shipment. Since the time information transmitting apparatus 100 of this embodiment is a booster type repeater, the code “10” corresponding to the repeater discrimination code storage unit 109 is written.

  Further, for example, by the initial setting by the operator, a time difference code (see FIG. 4) indicating the time zone of the apparatus installation location is written in the time difference code storage unit. For example, if installed in New York, the time difference code “100111” corresponding to New York is written in the time difference code storage unit 108.

  The time information transmitting apparatus 100 is installed and operated at a predetermined location after the initial setting as described above is completed. The time information transmission device 100 is particularly effective when installed at a location where a person who has moved between areas having a time difference arrives, such as an airport.

  When the time information transmission device 100 is activated, the local radio wave is intermittently received by the radio wave reception unit 101 and the time information determination unit 102, and the time measurement data of the time measurement unit 104 is corrected by the time information. Further, the time counting unit 104 counts the signal of the frequency dividing circuit 106, so that the time measuring unit 104 always keeps accurate local time.

  The time code generation unit 107 reads the time measurement data of the time measurement unit 104 every minute, generates a time code for one frame based on the posted data, and outputs the time code to the modulation unit 110. As shown in FIG. 3, the code value of the part representing the year, month, Sunday and hour of the time code is generated in accordance with the standard Japanese radio wave format. Further, the time difference code stored in the time difference code storage unit 108 is added to the code positions A to C, and the repeater determination code stored in the repeater determination code storage unit 109 is added to the code position D. Thereby, a time code to which the time difference information and the device type information are added is generated.

  Then, the time code generated in this way is sent to the modulation unit 110 and the radio wave transmission unit 111 and is transmitted on the radio wave. A radio wave carrying a time code of 1 frame per minute is continuously transmitted from the antenna AN3.

  FIG. 6 is a flowchart of time correction processing executed by the CPU 13 of the radio timepiece 1, and FIG. 7 is an explanatory diagram showing an example of changing the display of the radio timepiece 1 when the time zone is moved. FIG. 7A shows an example of a display before movement, and FIG. 7B shows an example of a display after movement.

  Here, a case will be described in which the home time setting of the radio timepiece 1 is set to Japan, and the user moves the radio timepiece 1 from Japan to New York. Before moving in the time zone, for example, when departing from Japan, as shown in FIG. 7A, the display unit 12 of the radio-controlled timepiece 1 has a Japanese time display 23 and a date display 22 based on the clock data of the clock circuit unit 15. The day of the week display 21 is performed.

  After the user arrives in New York, for example, when a time adjustment process of the radio timepiece 1 is started at a predetermined time or when a forced radio wave reception operation is performed, first, the CPU 13 of the radio timepiece 1 The reception circuit unit 11 is activated to receive radio waves on the reception channel corresponding to the home time setting (step S1). Then, it is determined whether the reception is successful (step S2). If the reception is unsuccessful, the time for the next re-reception is set in step S3, and the time correction process is terminated. On the other hand, if the reception is successful, the process proceeds to the next process.

  When the reception is successful, as shown in FIG. 7B, the symbol display 28 of “RCVD” indicating the successful reception is output to the display unit 12.

  If the process proceeds to the next process due to successful reception, first, time information is read from the received time code (step S4: first code reading means). That is, of the time code shown in FIG. 3, the code part of minute / hour / total day / year / day of the week is read to obtain year / month / day data, hour / minute data, and day of the week data.

  Next, a time difference code and a repeater determination code are acquired from the code positions A to D of the received time code (step S5), and it is determined whether radio waves from the repeater have been received based on the repeater determination code (step S5). S6). Here, when a standard radio wave transmitted from a Japanese radio transmission station is received, the repeater discrimination code is “00” and it is discriminated that it is not a repeater. (Step S7) and display of the corrected time (Step S8: time display means) are performed. That is, the time data of the time circuit unit 15 is overwritten with the time information read in step S4, and the time of the time circuit unit 15 is displayed on the display unit 12. And this time correction process is complete | finished.

  On the other hand, when a radio wave is received from the time information transmission device 100 at an airport in New York, the repeater determination code is “10” or the like and it is determined that the repeater is used, and the process proceeds to step S9.

  When the process proceeds to step S9, first, information on the corresponding time difference time (time difference time with respect to UTC) is obtained from the time difference code acquired in step S5 with reference to the correspondence table 18c of FIG. 4 (step S9). Is compared with the time difference time of the home time zone set in the home time setting unit 17b (time difference time relative to UTC) (step S10). The second code reading means is constituted by the processes of steps S5, S6, S9, and S10.

  As a result, if the time difference time of the time difference code matches the time difference time of the home time, it indicates that the time information read in step S4 is currently in the time zone of the home time and is the time of the home time. Therefore, the process proceeds to step S7, where the normal time correction and the corrected time are displayed, and the time correction process is terminated.

  On the other hand, after moving to New York, the time difference time of the home time is the time difference time of Japan, and the time difference time of the time difference code is the time difference time of New York, so the comparison result of step S10 is inconsistent. This also indicates that the time information read in step S4 is a time other than the home time in the time zone other than the home time.

  Therefore, if the comparison result in step S10 is inconsistent, the process proceeds to step S11, and the CPU 13 first switches to the world time display mode. That is, information indicating the time zone corresponding to the time difference code is set in the world time setting unit 17a of the RAM 17 as flag information indicating that the time is in the world time display mode and information indicating the time zone that is the target of the world time display. Is done. Also, symbol information representing the country and city of the time zone corresponding to the time difference code from the correspondence table 18c, or the time difference time of the target time zone is calculated from the home time instead of the time difference from UTC, and this is the time difference information from the home time. Set as

  Next, the process proceeds to step S12, and the time correction according to the time difference code is performed on the time data of the timing circuit unit 15 (time display means). That is, the time of the home time is calculated by subtracting the time difference from the home time from the time information read in step S4. Then, the time data of the time measuring circuit unit 15 is overwritten with the calculated time data. By this time correction, the time measurement data of the time measurement circuit unit 15 is accurately corrected to the time of the home time while being in a time zone different from the time zone of the home time.

  Next, the process proceeds to step S13, and the display content on the display unit 12 is switched to display in the world time display mode. That is, as shown in the transition from FIG. 7A to FIG. 7B, the day of the week display 21 is switched to the symbol display 25 of “WT (world time indicator)” indicating that the time is in the world time display mode. (Sign display means), the date display 22 is switched to a symbol display 26 such as "NYC (region information)" representing the target country (or city) of the world time display (region information display means). Further, the home time (Japan) time display 23 is switched to the world time (New York) time display 27 obtained by subtracting the time difference from the time measurement data of the time measurement circuit unit 15 to the target time zone.

  And this time correction process is complete | finished. After completion of the time adjustment process, the time display process executed by the CPU 13 continues to output the world time display mode based on the setting information of the world time setting unit 17a.

  As described above, according to the radio timepiece 1 of this embodiment, the time code is read according to the standard radio wave format to acquire time information, and the time difference added to the time code in a format different from the standard radio wave format. Since the code and repeater identification code can be read, the radio timepiece 1 identifies the standard radio wave transmitted from a predetermined radio wave transmitting station and the radio wave according to the standard radio wave transmitted from another device, Control processing according to the case can be performed.

  For example, it is possible to determine whether or not other information such as time difference information is added by the repeater determination code, to determine in which time zone it is, or to calculate the time difference time from the home time by the time difference code You can do it. As a result, when it is determined that the time zone is different from the home time region, the time information of the home time is not corrected, but the time is switched to the world time display mode and corrected as the time of another time zone. Time display can be performed.

  At that time, since the symbol display 25 indicating the world time display mode is output to the display unit 12, the user recognizes that the world time display has started and the local time is displayed correctly. can do. Similarly, when the display is switched to the world time display mode, the symbol display 26 of the country and city of the display time is displayed, so that the user can more reliably recognize that the local time is displayed correctly.

  In addition, in the radio timepiece corresponding to an area such as the United States that has a plurality of time zones in one country and distributes the UTC time code to all time zone areas, Add a function that can be set as to whether you are in the zone, and when the time code is received, subtract the time difference of the corresponding time zone from the UTC to calculate the local time, and correct the display time with this calculated time Composed. In such a radio timepiece, similarly to the radio timepiece 1 of the above-described embodiment, for example, a radio timepiece is provided by adding a function of receiving the time difference code together with the time code from the time information sending device 100 and reading the time difference information. When moving from the US West to the US East, the time difference information is automatically received together with the UTC information, so that the user does not need to change the time zone setting, and the time of the destination time zone can be displayed. It can also be automatically corrected.

  Further, according to the above embodiment, a code newly added to the time code (for example, a time difference code or a repeater discrimination code) is added to a code position where a fixed value code is arranged in the standard radio wave format. Information originally added to the standard radio time code is not reduced, and a conventional radio timepiece that can receive only the standard radio time code can receive the time code and acquire the time information.

  Further, since the time difference code is defined by 6-bit data, all the time zones in the world can be identified by the time difference code. In addition, since the repeater determination code is defined by 2-bit data, it is possible to identify four types of device types, and accordingly, it is possible to perform many variations of control processing according to the device type.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the code that is newly added to the time code is not limited to the time difference code or the repeater determination code. For example, only a code indicating that it is not a time code of a standard radio wave transmitted from a predetermined radio wave transmission station is added. You may make it do. Even in that case, for example, by reading this code with the radio-controlled timepiece 1, if it is not the time code of the standard radio wave, control is performed to display and output that it is a time code sent from another device. The user can be notified. In addition, when the time code is sent from another device, by adopting a control process that does not change the time of the home time, the time of the home time is not corrected by mistake when received in another country. Can be.

  In addition, instead of the time difference code shown in the above embodiment, a region code indicating country or region information may be added. If the time difference of the area is calculated from the area code, the same control as in the above embodiment is possible even if the area code is added.

  Further, in the above embodiment, the time code received by the radio timepiece 1 and the time code transmitted by the time information transmitting device 100 are exemplified as those conforming to the time code of Japanese standard radio waves. When a resident uses it, various changes can be made, such as applying a time code that conforms to the American time code.

  In the above embodiment, the time code transmitted from the time information transmitting device 100 has been described as representing local time information. However, for example, UTC time information is represented in the time code and the time difference code is used. It may be specified that the local time is calculated by subtracting the obtained time difference time.

  In the above embodiment, the radio timepiece is exemplified as the time information receiving terminal. However, the present invention is not limited to the radio timepiece, and can be similarly applied to various electronic devices that realize various functions by using time information. . In addition, the detailed configuration, the detailed method, and the like shown in the embodiments can be appropriately changed without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Radio time signal 11 Receiving circuit part 12 Display part 13 CPU
DESCRIPTION OF SYMBOLS 15 Timekeeping circuit part 16 Input part 17a World time setting part 17b Home time setting part 18a Time display program 18b Time correction program 18c Time difference code correspondence table 25 Symbol display 26 Symbol display 100 Time information sending device 104 Timekeeping part 107 Time code generation part 108 Time difference code storage unit 109 Repeater determination code storage unit 110 Modulation unit 111 Radio wave transmission unit A to C Code position to which time difference code is added D Code position to which repeater determination code is added W0 to W5 Time difference code R0, R1 Repeater determination code

Claims (4)

A time information receiving unit that receives a radio wave including a time code and obtains the time code;
First code interpretation means for obtaining time information by interpreting the time code acquired by the time information receiver according to a standard radio wave format;
The time difference code indicating the time difference information of the radio wave transmission region and the transmission type code indicating the type of the radio wave transmission source, which are added to the code position which is a fixed value of the time code acquired by the time information receiving unit , are read. Second code interpretation means;
Time display means for displaying the time based on the time information read by the first code reading means;
A sign display means for displaying a world time sign indicating whether the time of the time display means is a time in a predetermined country or a time outside the predetermined country;
Based on the transmission type code read by the second code reading means, it is determined that the radio wave transmission source is a time information transmission device that adds the time difference code and the transmission type code to the time code and transmits the time code. The time information is based on whether or not the time difference information based on the time difference code matches the preset time difference information of the predetermined country. Control means for controlling the display content of the sign display means,
A time information receiving terminal comprising: A time information receiving unit that receives a radio wave including a time code and obtains the time code;
First code interpretation means for obtaining time information by interpreting the time code acquired by the time information receiver according to a standard radio wave format;
The time difference code indicating the time difference information of the radio wave transmission region and the transmission type code indicating the type of the radio wave transmission source, which are added to the code position which is a fixed value of the time code acquired by the time information receiving unit, are read. Second code interpretation means;
Time display means for displaying the time based on the time information read by the first code reading means;
Area information display means for displaying area information indicating in which area the time of the time display means is;
Based on the transmission type code read by the second code reading means, it is determined that the radio wave transmission source is a time information transmission device that adds the time difference code and the transmission type code to the time code and transmits the time code. The time information is determined by comparing the time difference information based on the time difference code with the time difference information of the set region, and the region information is determined according to the determination result. Control means for controlling the display content of the display means;
A time information receiving terminal comprising: In a time information transmission / reception system comprising: a time information transmission device that transmits a time code on a radio wave; and a time information reception terminal that receives the radio wave and acquires the time code.
The time information sending device is
For a time code obtained by encoding time information according to the standard radio wave format, a time difference code indicating the time difference information of the radio wave transmission area and the type of the radio wave transmission source are indicated at a code position which is a fixed value of the standard radio wave format. Time code generating means for generating a time code updated by adding a type code ;
Radio wave transmission means for transmitting the time code generated by the time code generation means on radio waves; and
With
The time information receiving terminal is
Radio wave receiving means for receiving the radio wave and obtaining the time code;
First interpretation means for interpreting the time code obtained by the radio wave reception means to obtain time information;
Second interpretation means for interpreting a time difference code representing a time difference information of a radio wave transmission area and a transmission type code representing a type of a radio wave transmission source among time codes acquired by the radio wave reception means;
Time display means for displaying the time based on the time information read by the first code reading means;
A sign display means for displaying a world time sign indicating whether the time of the time display means is a time in a predetermined country or a time outside the predetermined country;
When it is determined that the radio wave transmission source is a time information transmission device based on the transmission type code read by the second code reading means, the time difference of the predetermined country set with the time difference information based on the time difference code Control means for determining whether or not the time information is the time of the predetermined country according to whether or not the information matches, and controlling the display content of the sign display means according to the determination result;
A time information transmission / reception system comprising: In a time information transmission / reception system comprising: a time information transmission device that transmits a time code on a radio wave; and a time information reception terminal that receives the radio wave and acquires the time code.
The time information sending device is
For a time code obtained by encoding time information according to the standard radio wave format, a time difference code indicating the time difference information of the radio wave transmission area and the type of the radio wave transmission source are indicated at a code position which is a fixed value of the standard radio wave format. Time code generating means for generating a time code updated by adding a type code ;
Radio wave transmission means for transmitting the time code generated by the time code generation means on radio waves; and
With
The time information receiving terminal is
Radio wave receiving means for receiving the radio wave and obtaining the time code;
First interpretation means for interpreting the time code obtained by the radio wave reception means to obtain time information;
Second interpretation means for interpreting a time difference code representing a time difference information of a radio wave transmission area and a transmission type code representing a type of a radio wave transmission source among time codes acquired by the radio wave reception means;
Time display means for displaying the time based on the time information read by the first code reading means;
Area information display means for displaying area information indicating in which area the time of the time display means is;
When it is determined that the radio wave transmission source is a time information transmission device based on the transmission type code read by the second code reading means, the time difference information based on the time difference code and the time difference information of the set region And a control means for determining in which area the time information is the time of the time, and controlling the display content of the area information display means according to the determination result;
A time information transmission / reception system comprising:

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