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Radio-wave receiver, radio-wave timepieces and radio-wave receiving integrate circuit

A technology for radio wave reception and reception time, which is applied in the fields of radio wave timers, radio wave receiving integrated circuits, and radio wave receiving devices, and can solve the problems of long time and so on.

Active Publication Date: 2006-04-05
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the time required for reception of standard radio waves is still relatively long

Method used

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  • Radio-wave receiver, radio-wave timepieces and radio-wave receiving integrate circuit
  • Radio-wave receiver, radio-wave timepieces and radio-wave receiving integrate circuit
  • Radio-wave receiver, radio-wave timepieces and radio-wave receiving integrate circuit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0052] First, the first embodiment will be described. In the first embodiment, the second portion of the internal time counted by the timekeeping circuit section 80 is calibrated by using the P signal included in the received standard radio wave.

[0053] [1.1 Composition]

[0054] [1.1.1 Overall composition]

[0055] figure 2 This is a block diagram illustrating an example of the functional configuration of the radio controlled timepiece 1 . As shown in the figure, the radio controlled timer 1 is composed of a CPU (Central Processing Unit) 10, an input unit 20, a display unit 30, a ROM (Read Only Memory) 40, a RAM (Random Access Memory) 50, a radio wave receiving circuit unit 60, The time code generation circuit unit 70 and the timer circuit unit 80 which counts the clock signal output from the oscillation circuit unit 90 to acquire current time data are connected to the bus 100 and constituted.

[0056] [1.1.2 Input unit and display unit]

[0057] The input unit 20 is ...

no. 2 Embodiment approach

[0082] Next, a second embodiment will be described.

[0083] [2.1 Composition]

[0084] The configuration of the radio timepiece in the second embodiment is that in the first embodiment, the figure 1 Replace the ROM40 shown with the Figure 4 As for the configuration after the ROM 42 shown in , in the following, the same components as those in the first embodiment are given the same reference numerals, and their descriptions are omitted.

[0085] Compare below Figure 4 , the configuration of the ROM 42 will be described. like Figure 4As shown, the ROM 42 has a second standard radio wave reception program area 422 . The CPU 10 realizes the second standard radio wave reception process by executing the second standard radio wave reception program 422 . Specifically, after the user inputs an instructing operation indicating to receive the standard radio wave and perform time adjustment, the CPU 10 executes the second standard radio wave processing. In the second standard ...

no. 3 Embodiment approach

[0099] Next, a third embodiment will be described.

[0100] [3.1 Composition]

[0101] The configuration of the radio-controlled timepiece in the third embodiment is that in the first embodiment, the ROM 40 shown in FIG. 12 is replaced by Figure 7 In the following configurations of the ROM 44 and subsequent configurations shown above, the same components as those in the first embodiment are given the same reference numerals and their descriptions are omitted.

[0102] Compare below Figure 7 , the configuration of the ROM 44 will be described. like Figure 7 As shown, the ROM 44 has a third standard radio wave reception program area 442 . The CPU 10 realizes the third standard radio wave reception process by executing the third standard radio wave reception program 442 . Specifically, the CPU 10 holds the first digit of the "second" part of the internal time as "9.00" once the first digit of the "second" part of the internal time at that time becomes "9". Afterwards, th...

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Abstract

The invention relates to a time information receiving device capable of shortening a reception operation time of a standard radio wave as short as possible, and capable of restraining power consumption. The information receiving device is provided with: a time counting mechanism for counting time; a receiving mechanism for receiving the standard radio wave; a receiving control mechanism controlling the receiving mechanism to receive the standard radio wave so as to obtain a time code; a detection mechanism which detects the lack of time data in the time code obtained by the receiving control mechanism; a compensation control mechanism which receives the standard radio wave again in the receiving mechanism when the detection mechanism detects the lack, so as to obtain a new time code, and which compensates the lack portion based on the time code and the new time code obtained by the receiving control mechanism; and a compensation reference calibration mechanism which calibrates the time counted by time counting mechanism, according to the time codes compensated by the compensation control mechanism.

Description

technical field [0001] The invention relates to a radio wave receiving device, a radio wave timer and a radio wave receiving integrated circuit. Background technique [0002] Now, all countries (such as Germany, Britain, Switzerland, Japan, etc.) are sending standard radio waves with time data, that is, time codes. From two sending stations in Japan (Fukushima Prefecture and Saga Prefecture), 40kHz and 60kHz long-wave standard radio waves will be used in the standard radio wave format, and the time information (time code) has been amplitude-modulated. The time code of the standard radio wave, the time code of the standard radio wave, updates the digit of the minute at every correct time, that is, it transmits with a frame of 1 cycle of 60 seconds every 1 minute. [0003] Conventionally, there is a radio-controlled timepiece that receives this standard radio wave and calibrates the data of the timing (hereinafter referred to as "internal time" as appropriate). For example, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04G04G5/00G04G7/02G04G21/04G04R20/00G04R20/08G04R20/12
Inventor 村田嘉行染谷薰
Owner CASIO COMPUTER CO LTD
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