JP2008170357A - Timepiece device, module for timepiece device, and time data correction processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress greatly the power required for acquiring time information, in a timepiece device for acquiring the time information by communication by a CDMA method or the like, a module for the timepiece device, and a time data correction processing method. <P>SOLUTION: When a decoding processing is applied to a base band signal acquired by an RF signal processing part 100, and time data are acquired from a sink channel message acquired by the decoding processing by a time data acquisition part 210 of a base band signal processing part 200, the RF signal processing part 100 and the base band signal processing part 200 are suspended over a period from a point of time corresponding to a head part of the sink channel message to a point of time ahead as long as a prescribed period of an appearance point of time of the time data in the sink channel message by a data processing operation regulation control part 300. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a timepiece device, a timepiece module, and a time data correction processing method, and more particularly to an improvement in power consumption suppression effect related to these.

The CDMA (Code Division Multiple Access) mobile phone system was developed by Qualcomm Corp. in the United States in 1993 as one of the US standard systems “IS95.
”Has been in full operation since it was adopted, and since then IS95A, IS95
B, it has reached the present through the revision of CDMA2000. In Japan, ARIB
A mobile phone system is operated according to STD-T53.

In the CDMA system, the downlink (base station to mobile station) is synchronous communication, and the base station transmits in synchronization with the even number of seconds of GPS time data. Therefore, it is necessary for the mobile station to synchronize with the time data of the base station. When the power is turned on or initialization, the pilot PN is searched and the sync channel message is received and the GPS time, leap second, and local offset are received. It is possible to obtain the daylight saving time status as data.

At this time, in order to realize a radio clock device that functions effectively in a wide area, a radio wave transmitted from a CDMA mobile phone or a car phone base station is received, and a sync channel message superimposed on the radio wave is received. There has already been proposed a technique for demodulating GPS time data from data to be expressed and correcting the time data of the built-in clock unit based on the demodulated GPS time data (see, for example, Patent Document 1).
JP 2000-321383 A (paragraphs 0007 to 0008, FIG. 1)

However, in the proposal disclosed in Patent Document 1, in order to obtain the time data, when extracting the system time data from the data representing the sync channel message, the system time is once obtained and is the correct data. Until the decision is made, it is necessary to check the CRC added to the last part of the packet. To obtain the time data required to correct the time, the unnecessary part of the process is large and wastes power. There is a problem such as.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a timepiece device, a timepiece module, and a time data correction processing method that can significantly reduce power consumption.

In order to solve the above problems, the present application proposes the following technologies.
(1) Including time information for ensuring synchronization of communication between a base station and a mobile station so as to enable transmission / reception of the main information signal that carries a message or data intended for communication and transmission of the main information signal Receives radio waves by a communication system using an information signal including a sub-information signal transmitted from the base station in association with the main information signal, having a format in which a series of time series alignment orders of each predetermined information is fixed An RF signal processor that demodulates and obtains a baseband signal;
Time data representing the time information is obtained from sub-information data corresponding to the sub-information signal in the data obtained by performing decoding processing on the baseband signal acquired by the RF signal processing unit. A baseband signal processing unit including a time data acquisition unit that obtains time correction data based on the acquired time data;
The time when the arrival of the head part in the sequence of the time series of the sub-information data acquired by the decoding process in the baseband signal processing unit is recognized as the effective time starting point,
Corresponding to at least one of the RF signal processing unit and the baseband signal processing unit over a period up to a point of time preceding the present time of the time data in a series of time series alignment ranks of the sub information data The data processing operation in the portion is paused, and the pause of the data processing operation is canceled in the period following the pause period, the data processing operation is activated, and time data is acquired by the baseband processing unit by the operation. After being performed, a data processing operation restriction control unit for pausing the data processing operation in the corresponding part,
A timepiece device comprising:

In the timepiece device of (1) above, in the RF signal processing unit, a main information signal for carrying a message or data to be communicated and a base station and a mobile station to enable transmission / reception of the main information signal. A sub-information signal transmitted from the base station in association with the main information signal having a format in which a series of time-series alignment orders of predetermined pieces of information including time information are fixed for ensuring synchronization of communication, etc. For example, a baseband signal is obtained by receiving and demodulating a radio wave by a communication method using an information signal including a sync channel message in CDMA communication)
The baseband signal processing unit performs a decoding process on the baseband signal acquired by the RF signal processing unit, and the time data acquisition unit of the baseband signal processing unit supports the sub information signal in the data obtained by the decoding process. Sub information data (eg, CD as described above)
In MA communication, time data representing time information is obtained from data representing a sync channel message), and time correction data is obtained based on the obtained time data.

On the other hand, when the data processing operation restriction control unit recognizes the arrival of the head portion in the series of time series alignment ranks of the above-described sub information data acquired by the decoding processing in the baseband signal processing unit, the effective time Is calculated over a period up to a time point that precedes the present time of the time data in the series of time series alignment ranks of the sub-information data by a predetermined period.
A corresponding part of at least one of the signal processing unit and the baseband signal processing unit (for example, RF
The data processing operation in the entire signal processing unit and the baseband signal processing unit, or a predetermined part including the above-described time data acquisition unit of the baseband signal processing unit) is paused, and the data processing is performed in a period following the pause period. The suspension of the operation is released and the data processing operation is activated, and after the time data is acquired by the baseband processing unit due to the operation, the data processing operation in the corresponding part is suspended.
By performing this suspension, power consumption for performing processing not involved in obtaining time correction data is suppressed, and significant power saving is realized over the continuous use period of the apparatus. .

(2) The time data acquisition unit of the baseband signal processing unit repeatedly acquires the time data from the sub information data corresponding to the repeatedly arrived sub information signal, and based on the time data acquired a plurality of times. The data processing operation restriction control unit is configured to obtain time correction data, and the data processing operation restriction control unit is configured to allow the RF signal processing unit and the baseband signal processing unit to receive the time data repeatedly a plurality of times. The timepiece device according to (1), which is configured to control a pause mode of a data processing operation in the corresponding portion.

In the timepiece device of (2), particularly in the timepiece device of (1), the time data acquisition unit of the baseband signal processing unit repeats the time data from the sub information data corresponding to the repeatedly arrived sub information signal a plurality of times. Based on the time data acquired and acquired a plurality of times (for example, by averaging processing or determination processing based on the majority rule), the data processing operation restriction control unit is configured to obtain time data. Is paused for a plurality of times to control the pause mode of the data processing operation in the corresponding portions of the RF signal processing unit and the baseband signal processing unit.

(3) The time data acquisition unit of the baseband signal processing unit determines the reliability of the acquired time data based on a plurality of time data acquired continuously and repeatedly a plurality of times. The timepiece device according to (2).
In the timepiece device of the above (3), in particular, in the timepiece device of (2), in order to determine the reliability of the acquired time data based on a plurality of time data acquired repeatedly and continuously several times, In order to check the accuracy of the data, for example, the processing is continued without performing the above-described pause until the data representing the accuracy of the time data different from the time data itself in the sub information data is read and recognized separately. Thus, it is not necessary to perform an operation of confirming the degree of accuracy of the time data, and a highly accurate time correction operation can be performed while maintaining good power saving characteristics.

(4) RF that obtains a baseband signal by receiving and demodulating radio waves in CDMA communication
A signal processing unit;
The baseband signal acquired by the RF signal processing unit is configured to perform decoding processing, and time data indicating time is acquired from data representing a sync channel message in the data obtained by the decoding processing, and the acquired time A baseband signal processing unit including a time data acquisition unit for obtaining time correction data based on the data;
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as an effective time, and the period from the data in the sync channel message to the time that precedes the current data output time by a predetermined period. A data processing operation restriction control unit that pauses the data processing operation in the corresponding part of at least one of the RF signal processing unit and the baseband signal processing unit,
A timepiece device comprising:

In the timepiece device of (4) above, the RF signal processing unit receives and demodulates radio waves in CDMA communication to obtain a baseband signal,
The baseband signal processing unit performs decoding processing on the baseband signal acquired by the RF signal processing unit, and the time data acquisition unit of the baseband signal processing unit converts the sync channel message in the data obtained by the decoding processing. Time data representing time is acquired from the data to be expressed, and time correction data is generated based on the acquired time data.

On the other hand, the time when the arrival of the head part of the sync channel message is recognized by the data processing operation restriction control unit is regarded as the effective time to calculate each time series in the format in which the sequence of the time series in the sync channel message is determined. The data processing operation in the corresponding part of at least one of the RF signal processing unit and the baseband signal processing unit is suspended for a period up to a time point preceding the present time point of the time data in the data by a predetermined period.
By performing this suspension, power consumption for performing processing not involved in obtaining time correction data is suppressed, and significant power saving is realized over the continuous use period of the apparatus. .

(5) The time data acquisition unit of the baseband signal processing unit acquires the time data repeatedly from data representing the sync channel message that repeatedly arrives, and corrects time based on the acquired time data The data processing operation restriction control unit is configured to obtain data, and the data processing operation restriction control unit is allowed to repeatedly acquire the time data a plurality of times, the corresponding of the RF signal processing unit and the baseband signal processing unit. The timepiece device according to (4), wherein the timepiece device is configured to control a pause mode of a data processing operation in the portion.

In the timepiece device of (5) above, in particular, in the timepiece device of (4), the time data acquisition unit of the baseband signal processing unit repeatedly acquires time data from data representing the arriving sync channel message multiple times. Based on the time data acquired a plurality of times (for example, by an averaging process or a determination process in accordance with the majority rule), the data processing operation restriction control unit is configured to obtain the time data a plurality of times. The pause mode of the data processing operation in the corresponding part of the RF signal processing unit and the baseband signal processing unit is controlled so that repeated acquisition is permitted.

Therefore, in order to confirm the accuracy of the time data, for example, the above-described pause is stopped until data representing the accuracy of time data different from the time data itself in the data representing the sync channel message is read and recognized separately. There is no need to perform an operation such as continuing the processing without confirming the degree of accuracy of the time data, and it is possible to perform a highly accurate time adjustment operation while maintaining good power saving characteristics.

(6) Including time information for ensuring synchronization of communication between the base station and the mobile station so as to enable transmission / reception of the main information signal and the main information signal for carrying a message or data intended for communication Receives radio waves by a communication system using an information signal including a sub-information signal transmitted from the base station in association with the main information signal, having a format in which a series of time series alignment orders of each predetermined information is fixed A connection end to an antenna that fits,
An RF signal processing unit that receives a reception signal supplied from the connection end and demodulates the reception signal to obtain a baseband signal;
Time data representing the time information is obtained from sub-information data corresponding to the sub-information signal in the data obtained by performing decoding processing on the baseband signal acquired by the RF signal processing unit. A baseband signal processing unit including a time data acquisition unit,
The time when the arrival of the head part in the sequence of the time series of the sub-information data acquired by the decoding process in the baseband signal processing unit is recognized as the effective time starting point,
Corresponding to at least one of the RF signal processing unit and the baseband signal processing unit over a period up to a point of time preceding the present time of the time data in a series of time series alignment ranks of the sub information data A data processing operation restriction control unit for pausing the data processing operation in the part;
Is a monolithic structure for a timepiece device.

In the timepiece module of (6) above, when applied to a timepiece device, an RF signal processing unit that receives a signal received by the antenna from an end connected to the antenna receives a message or data to be communicated. A sequence of time series of predetermined information including time information for ensuring synchronization of communication between the base information and the mobile station so as to enable transmission / reception of the main information signal carrying the main information signal. Reception by a communication method using an information signal having a fixed format and including a sub information signal (for example, a signal representing a sync channel message in CDMA communication) transmitted from the base station in association with the main information signal Demodulate the signal to get the baseband signal,
The baseband signal processing unit performs a decoding process on the baseband signal acquired by the RF signal processing unit, and the time data acquisition unit of the baseband signal processing unit supports the sub information signal in the data obtained by the decoding process. Sub information data (eg, CD as described above)
In MA communication, time data representing time information is obtained from data representing a sync channel message), and time correction data is obtained based on the obtained time data.

On the other hand, when the data processing operation restriction control unit recognizes the arrival of the head portion in the series of time series alignment ranks of the above-described sub information data acquired by the decoding processing in the baseband signal processing unit, the effective time Is calculated over a period up to a time point that precedes the present time of the time data in the series of time series alignment ranks of the sub-information data by a predetermined period.
A corresponding part of at least one of the signal processing unit and the baseband signal processing unit (for example, RF
The data processing operation in the entire signal processing unit and baseband signal processing unit, or a predetermined part including the above-described time data acquisition unit of the baseband signal processing unit) is suspended.

By performing the suspension, power consumption for performing processing not involved in obtaining time correction data is suppressed, and the clock device to which the clock device module is applied is continuously used. Significant power saving is realized.
In addition, since each functional unit as described above is integrated as a module, it is suitable for high-density mounting and contributes to downsizing of the timepiece device.

(7) a connection end to an antenna adapted to receive radio waves in CDMA communication;
An RF signal processor that receives a CDMA RF signal supplied from the connection end and demodulates the RF signal to obtain a baseband signal;
A time data acquisition unit configured to perform decoding processing on the baseband signal acquired by the RF signal processing unit, and acquiring time data representing time from data representing a sync channel message in the data obtained by the decoding processing; Including a baseband signal processor,
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as an effective time, and the period from the data in the sync channel message to the time that precedes the current data output time by a predetermined period. A data processing operation restriction control unit that pauses the data processing operation in the corresponding part of at least one of the RF signal processing unit and the baseband signal processing unit,
Is a monolithic structure for a timepiece device.

In the module for a timepiece device according to (7) above, when applied to the timepiece device, the RF signal processing unit that receives the signal received by the antenna from the connection end to the antenna,
Receiving a MA type RF signal and demodulating the RF signal to obtain a baseband signal;
The baseband signal processing unit performs decoding processing on the baseband signal acquired by the RF signal processing unit, and the time data acquisition unit of the baseband signal processing unit converts the sync channel message in the data obtained by the decoding processing. Time data representing time is acquired from the data to be expressed, and time correction data is generated based on the acquired time data.

On the other hand, the time when the arrival of the head part of the sync channel message is recognized by the data processing operation restriction control unit is regarded as the effective time to calculate each time series in the format in which the sequence of the time series in the sync channel message is determined. The data processing operation in the corresponding part of at least one of the RF signal processing unit and the baseband signal processing unit is suspended for a period up to a time point preceding the present time point of the time data in the data by a predetermined period.

By performing the suspension, power consumption for performing processing not involved in obtaining time correction data is suppressed, and the clock device to which the clock device module is applied is continuously used. Significant power saving is realized.
In addition, since each functional unit as described above is integrated as a module, it is suitable for high-density mounting and contributes to downsizing of the timepiece device.

(8) Including time information for ensuring synchronization of communication between the base station and the mobile station to enable transmission / reception of the main information signal and the main information signal for carrying a message or data to be communicated Receives radio waves by a communication system using an information signal including a sub-information signal transmitted from the base station in association with the main information signal, having a format in which a series of time series alignment orders of each predetermined information is fixed And RF signal processing including processing to demodulate and acquire a baseband signal;
Time data representing the time information is acquired from the sub information data corresponding to the sub information signal in the data obtained by performing decoding processing on the acquired baseband signal, and the time is corrected based on the acquired time data Baseband signal processing including processing for generating data,
The time point when the arrival of the leading portion in the time series alignment order of the sub information data is recognized as the effective time starting point, and the time data output in the time series alignment order of the sub information data is determined. Data processing operation restriction control for stopping the data processing operation of the corresponding part of at least one of the RF signal processing and the baseband signal processing over a period up to a time point preceding the current time by a predetermined period;
The time data correction processing method characterized by performing this.

According to the time data correction processing method of (8) above, communication between a base station and a mobile station to enable transmission / reception of a main information signal for carrying a message or data intended for communication and the main information signal. A sub-information signal transmitted from the base station in association with the main information signal (for example, RF signal processing including processing for receiving and demodulating radio waves by a communication method using an information signal including a sync channel message in CDMA communication) and acquiring a baseband signal;
Time information is obtained from the sub information data corresponding to the sub information signal in the data obtained by performing the decoding process on the acquired baseband signal (for example, data representing a sync channel message in the CDMA communication as described above). Baseband signal processing including processing for acquiring time data to represent and generating time correction data based on the acquired time data;
The time when the arrival of the beginning of the sub-information data in the time series alignment order is recognized as the effective time, and the time information is output in the time series alignment order of the sub-information data. Corresponding portions of at least one of RF signal processing and baseband signal processing (for example, all of RF signal processing and baseband signal processing, or the above-mentioned during baseband signal processing) over a period up to a time point preceding a predetermined period. Data processing operation regulation control for pausing the data processing operation of the predetermined partial processing including the time data acquisition of
Is executed, power consumption for performing processing not involved in obtaining time correction data is suppressed, and significant power saving is realized over the continuous use period of the apparatus.

(9) The baseband signal processing is repeatedly acquired from the sub information data corresponding to the sub information signal that repeatedly arrives, and the time correction data is obtained based on the time data acquired a plurality of times. Data processing operation in the corresponding part of the RF signal processing and the baseband signal processing so that the time data is repeatedly acquired a plurality of times. (8) The time data correction processing method according to (8), wherein the time data correction processing method is executed in a manner to pause.

In the time data correction processing method of (9) above, particularly in the time data correction processing method of (8), the baseband signal processing is repeated several times from the sub information data corresponding to the repeatedly arrived sub information signal. Based on the time data acquired and acquired multiple times (for example, by averaging processing or determination processing in accordance with the majority rule), the time correction data is executed, and the data processing operation restriction control is performed on the time data. The data processing operation in the corresponding part of the RF signal processing and the baseband signal processing is paused so as to be repeatedly acquired multiple times.

Therefore, in order to confirm the accuracy of the time data, for example, the above-mentioned pause is not performed until the data representing the accuracy of the time data different from the time data itself in the sub information data is read and recognized separately. It is not necessary to continue the processing and check the accuracy of the time data, and a highly accurate time correction operation can be performed while maintaining the power saving characteristics.

(10) R to obtain a baseband signal by receiving and demodulating radio waves in CDMA communication
F signal processing;
Time correction data is acquired based on the acquired time data by acquiring time data representing time from data representing a sync channel message in the data obtained by decoding the baseband signal acquired by the RF signal processing. Baseband signal processing including processing to generate,
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as an effective time, and the period from the data in the sync channel message to the time that precedes the current data output time by a predetermined period. A data processing operation restriction control for stopping a data processing operation in a corresponding portion of at least one of the RF signal processing and the baseband signal processing;
The time data correction processing method characterized by performing this.

In the time data correction processing method of (10) above, RF signal processing for receiving and demodulating radio waves in CDMA communication to obtain a baseband signal;
Time correction data is obtained from time data representing time from data representing a sync channel message in the data obtained by performing decoding processing on the baseband signal obtained by RF signal processing, and time correction data is obtained based on the obtained time data. Baseband signal processing including processing to generate;
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as the effective time, and the period of time from the data in the sync channel message to the time that precedes the current time of the time data by a predetermined period. In order to obtain data for time correction by performing the data processing operation regulation control for executing the data processing operation regulation control for halting the data processing operation in the corresponding part of at least one of the RF signal processing and the baseband signal processing. The consumption of power for performing processes that are not involved is suppressed, and significant power saving is realized over the continuous use period of the apparatus.

(11) The baseband signal processing is executed so that the time data is repeatedly acquired from data representing the sync channel message that repeatedly arrives, and time correction data is obtained based on the time data acquired multiple times. In addition, the data processing operation restriction control is executed in such a manner that the data processing operation in the corresponding portion of the RF signal processing and the baseband signal processing is paused so as to correspond to the time data being repeatedly acquired a plurality of times. (10) Time data correction processing system characterized by the above-mentioned.

In the time data correction processing method of (11) above, particularly in the time data correction processing method of (10), baseband signal processing is repeatedly acquired from data representing the repeatedly received sync channel message a plurality of times. The RF signal processing is performed so that time correction data is obtained based on the time data acquired a plurality of times, and the data processing operation regulation control is allowed to be acquired repeatedly a plurality of times. And the data processing operation in the corresponding part of the baseband signal processing is paused.

Therefore, in order to confirm the accuracy of the time data, for example, the above-described pause is stopped until data representing the accuracy of time data different from the time data itself in the data representing the sync channel message is read and recognized separately. It is not necessary to continue the processing without confirming the accuracy of the time data, and the power saving characteristic is further improved, and the time correction operation with high accuracy can be performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a timepiece device and a timepiece module 10 according to one embodiment of the present invention.
It is a block diagram showing the outline | summary.
In the present invention, for example, as in CDMA communication, a main information signal for carrying a message or data (that is, voice or other data of a call) intended for communication and transmission / reception of the main information signal are performed. A series of predetermined pieces of information including time information for ensuring synchronization of communication between a base station (for example, a base station in a mobile phone system) and a mobile station (for example, a terminal such as a mobile phone), etc. An information signal including a sub-information signal (for example, a signal representing a sync channel message in CDMA communication) transmitted from the base station in association with the main information signal and having a format in which the sequence order is determined It is assumed that the communication method used is appropriate.

In FIG. 1, an RF signal processing unit 100 receives a received signal supplied from an antenna 110 that is received by an antenna 110 that is suitable for receiving radio waves in a manner in accordance with the communication method as described above. The received signal is down-converted and demodulated to obtain a baseband signal.
For example, I-phase and Q-phase baseband signals obtained by the RF signal processing unit 100 are supplied to the baseband signal processing unit 200 at the next stage. The baseband signal processing unit 200 is configured to perform decoding processing on the above-described baseband signal, and time data representing time information from sub-information data corresponding to the above-described sub-information signal in the data obtained by the decoding processing. Includes a time data acquisition unit 210 for acquiring.

Further, the sub information data (C
In DMA communication, a series of time series of this sub-information data is defined as an effective time starting point when the arrival of the leading portion in the series of time series alignment ranks of data (data representing a sync channel message) is recognized. The RF signal processing unit 100 and the baseband signal processing unit 200 over a period up to a time point that precedes the present time of the time data in the alignment order of
Is provided with a data processing operation restriction control unit 300 that performs control to pause the data processing operation in at least one of the corresponding portions.

In the data processing operation restriction control unit 300, the RF signal processing unit 100 is operated in a manner described later.
And the control mode is determined so as to perform control to pause the data processing operation in at least one of the corresponding portions of the baseband signal processing unit 200, and the first control signal Sc1
Is used to control the operation of the RF signal processing unit 100, and the operation of the baseband signal processing unit 200 is controlled by the second control signal Sc2.

The time data (time correction data) acquired by the time data acquisition unit 210 of the baseband signal processing unit 200 is output from the time data output terminal 12 and performs a time correction operation based on the time data. (Indicated as CPU).
In this example, the connection end 11 to the antenna 110, the RF signal processing unit 100, the baseband signal processing unit 200, the data processing operation restriction control unit 300, and the time data output end 12 are integrally configured. Thus, one timepiece module 10 as shown by the one-dot chain line is configured.

FIG. 2 is a block diagram showing an outline of an internal configuration of the baseband signal processing unit 200 in the timepiece module 10 of FIG. 1 in an example of a system that receives a CDMA signal.
The I-phase and Q-phase baseband signals supplied from the RF signal processing unit 100 in FIG. 1 are input to the synchronization unit 211 and the despreading unit 212. The synchronization unit 211 synchronizes the timing of the short PN code by quadrature spreading from the I-phase and Q-phase baseband signals supplied as described above, and notifies the despreading unit 212 of the synchronization timing.

The despreading unit 212 multiplies the I-phase and Q-phase baseband signals by the short PN code based on the synchronization timing, and further multiplies and integrates the No. 0 of the Walsh codes to integrate the pilot channel into 32 Walsh codes. Multiply by the number and integrate to demodulate the sync channel. The data determining unit 213 determines the BPSK data of the sync channel by removing the phase rotation by the above-described pilot channel.
The output of the data determination unit 213 is restored to the original data including the time data TD by the decoding unit 214 at the next stage and is output from the time data output terminal unit 12 (FIG. 1), while the data processing operation restriction control unit 300 ( 1).

FIG. 3 is a block diagram illustrating details of the configuration of the decoding unit 214 in the baseband signal processing unit 200 of FIG. The demodulated data supplied to the decoding unit 214 from the preceding data determination unit 213 (FIG. 2) is deinterleaved by the deinterleaver 2141 in 128-bit processing, and the next-stage delimiter 2142 provides 128-bit data. Are thinned out bit by bit to obtain 64-bit data. Next, in the error correction processing unit 2143, the repeater 214
The 64-bit data from 2 is subjected to decoding processing of 1/2 convolutionally encoded data to obtain final data as 32-bit data.

FIG. 4 is a diagram used to supplement the description of the operation of the configuration of FIG. 3. The configuration of the functional unit for performing the encoding process in the transmission-side device corresponding to the function of the decoding unit 214 of FIG. FIG.
The 32-bit data to be transmitted is subjected to convolutional coding in a 1/2 convolutional coding processing unit 3143 to become 64-bit data, and the same data is repeated twice in the repeater 3142 in the next stage. The data is processed into 128-bit data, and the next-stage interleaver 3141 performs processing for rearranging the order of the data within 128 bits.

The above-described operation of the decoding unit 214 having the configuration described with reference to FIG. 3 is performed by performing a process reverse to the encoding process in the transmission-side apparatus described with reference to FIG. It can be said that it is something that restores.
In the above configuration, a sequence of time series alignment in the sync channel message is determined with the time when the arrival of the head portion of the sync channel message is recognized by the data processing operation restriction control unit 300 as an effective time. Data processing operation in the corresponding part of at least one of the RF signal processing unit 100 and the baseband signal processing unit 200 over a period up to a time point that precedes the present time of the time data in each data in the format Is controlled so as to pause.

By performing the suspension, power consumption for performing processing not involved in obtaining time correction data is suppressed, and the clock device to which the clock device module 10 is applied is continuously used. Thus, significant power saving is realized.
In addition, since each functional unit as described above is integrated as a module, it is suitable for high-density mounting and contributes to downsizing of the timepiece device.

Next, the operation of the data processing operation restriction control unit 300 in the case of CDMA communication will be described more specifically with reference to the drawings.
FIG. 5 shows a format of a sync channel message in the CDMA mobile phone system CDMA2000. The sync channel message is a communication between the base station and the mobile station to enable transmission / reception of the main information signal that carries the message or data that is the original purpose of communication (ie, voice and other data of the call). In order to ensure synchronization or the like, the system has a format in which a series of time series alignment orders of predetermined pieces of information including time information are fixed.

In the notation of FIG. 5, a series of time-series alignment orders of predetermined pieces of information are represented in order from top to bottom.
In order to obtain time information from the sync channel message, it is represented at a position below the middle position in a series of time-series alignment ranks representing each piece of information in FIG. SYS_TIME, LP_SEC, LTM_OFF, DAYLT data is required, but no other data is required.

For this reason, when receiving for the purpose of obtaining time information, the number of times SYS_TIME, which is information necessary for acquiring time information, is started once the demodulation operation is stopped when it is recognized that the head of the sync channel message has arrived. Resume the demodulating operation from before the bit, and when the DAYLT demodulation is completed, completely stop each relevant part involved in the demodulating operation (for example, turn off the power to each relevant part) Power consumption can be significantly suppressed relative to the case of demodulation.
More specifically, the sync channel message of FIG. 5 is divided every 31 bits, and SOM (S
A bit called “tart of message” is added and processing is performed for each section of a bit string composed of 32-bit chunks. This is shown in FIG.

FIG. 6 is a diagram illustrating a bit string section corresponding to a segment of each bit string composed of a 32-bit block related to sync channel message data and a classification (field) for each type of information to be carried.
As shown in FIG. 6, since each bit is divided into 31 bits in order from the top, some fields are divided into two parts across SOMs.
The processing for each 32 bits described with reference to FIG. 3 is executed sequentially for the above-described 32-bit chunks. For this reason, the demodulation timing is usually selected so that demodulation can be performed from the SOM.

In the following, the control of stopping the demodulation process of the sync channel message and restarting the demodulation process in the normal process as described above will be further described.
The sync channel message uses a convolutional code having a coding rate of 1/2 and a constraint length of 9 as an error correction code. In order to correctly decode convolutionally encoded data with a constraint length of 9,
It is necessary to perform error correction processing from data several bits before the necessary bits. Therefore, the timing of restarting the demodulation operation is from a time corresponding to the middle of LC_STATE (42 bits) preceding SYS_TIME. In FIG. 6, this is located in the latter half portion as shown in the section of the M4 bit string.

FIG. 7 is a diagram illustrating the start, stop, and restart timing of the demodulation process as described above. In the notation of FIG. 7, the signal before deinterleaving and the signal after error correction are shown in a vertical contrast. Signals that are deinterleaved by the deinterleaver 2141 (FIG. 3) in 128-bit units (in FIG. 7, expressed as M1, M2,..., M7 for each unit) are subjected to error correction processing. In the process of signal conversion in units of 32 bits (indicated as M1 ′, M2 ′,... In FIG. 7), a predetermined delay occurs as shown on the lower horizontal axis.

That is, in FIG. 7, the signal before deinterleaving (128 bits) is delayed by 128 bits for the interleaving process and further delayed by several bits for the error correction process. In the figure, this delay is expressed as “processing delay”. The processing delay depends on how many bits are delayed in the error correction process, and is determined by the configuration of the error correction circuit.
The SOM in the signal after error correction that sequentially appears after the above-described predetermined delay time indicates that it is the first 1 bit of the decoded 32 bits, and the value of this SOM is at the beginning of the sync channel message. It is defined to be 1 and 0 otherwise.

Through the error correction process in the decoding process, the above-described 32-bit unit bit string section M1 ′
, M2 ′,..., The time when SOM = 1 is detected (recognized), as seen in the section of the bit string in 128-bit units subjected to the deinterleaving described above, This corresponds to an intermediate point in time during which M2 is expressed, and this position on the time axis corresponds to the beginning of the sync channel message.

FIG. 8 is a flowchart showing the operation of one example when the time is adjusted based on the sync channel message in the embodiment of the present invention. This operation is executed under the control of the data processing operation restriction control unit 300 (FIG. 1).
Section M1 of a 32-bit unit bit string subjected to error correction processing as described above in a state where demodulation processing (RF signal processing unit 100) and decoding processing (baseband signal processing unit 200) are continuously performed. .., M2 ′,... Are sequentially detected (step S801).
.

In the SOM detection process in step S801, it is determined whether or not “1” representing the start of the sync channel message is detected (step S802). If SOM = 1 is detected (step S802: Yes), the demodulation process is performed. (RF signal processing unit 100) is stopped (step S8).
03). As long as SOM = 1 indicating the start of the sync channel message is not detected (step S802: No), the process returns to step S801 to repeat the operation.

Following step S803, P_REV of the sync channel message is read to recognize the start position (time point) of the time information (step S804).
In step S804, the start position (time point) of the time information is recognized, this recognition is held, and then the demodulation operation is stopped (step S805).
After stopping the demodulation / decoding operation in step S805, a time measuring operation related to the elapsed time from the stop point is executed, and the elapsed time is monitored (step S806). As shown in the figure, it waits for the arrival of a predetermined time before the start position (step S807: No → step S806).

When it is determined in step S807 that the time point that precedes the start position of the time information by a predetermined time (in this example, the beginning of the section M4 of the bit string) has arrived (step S807: Yes)
The demodulation / decoding process is resumed (step S808).
While continuing the demodulation / decoding process from the time when the demodulation / decoding process was resumed in step S808,
The elapsed time related to the continuation of these processes is monitored (step S809), and it is determined whether or not a predetermined point in the middle of the section M7 of the bit string of 128 bits is reached (step S810).

If it is determined in step S810 that the predetermined time has been reached (step S810)
: Yes), the demodulation process is stopped (step S811).
Even if the demodulation process is stopped in step S811, the decoding process continues. In the decoding process continued in this way, it is determined whether or not the DAYLT data corresponding to the completion of acquisition of the data representing the time has been decoded (step S812), and when it is determined that the DAYLT data has been decoded. (Step S812: Yes) and the decoding process is stopped (Step S813).
The process proceeds to the time correction process (step S814).

Until it is determined that the DAYLT data has been decoded in step S812 (step S812: No), the decoding process is continued.
As in step S804 described above, it can be determined which bit contains time information by P_REV.
In systems such as IS95A, IS95B, and CDMA2000, the position of the time information is the same.

Therefore, when implementing the present invention in a form that is compatible with these systems, instead of recognizing the position of the time information based on the read P_REV, the time information is read at a corresponding timing as prescribed. You may do it.
Alternatively, reading P_REV every time may be omitted, and P_REV may be read only for the first time, and time information may be acquired from a predetermined position recognized based on P_REV that was initially read after the next time.

On the other hand, the predetermined time point to be monitored and judged in steps S804 → S807 is a time point that precedes the present time of the time data by a predetermined time period. In the above example, this time point is the LC_STATE (42 bits) preceding SYS_TIME. At a time corresponding to the middle, in FIG.
Is set at the beginning of the M4 bit string section preceding the position of the latter half of the bit string section as shown in the figure.

However, as described above, it is only an example to specify “a time point that precedes the present time of the time data”. SYS_TIME starts in the middle of M4, and even if an error occurs, error correction to some extent is possible. Since it is possible to do so,
It is also possible to start from the middle point of the section M4 of the bit string later than in the above example.
Further, in the above-described example, it is assumed that the demodulation process is stopped after demodulating halfway through the bit string section M7 in steps S810 to S811, but how far the demodulation is performed is arbitrary. The data up to the middle of M7 is preferably large in order to eliminate as much as possible error correction by error correction decoding processing.

When the time is adjusted during normal reception, the time is corrected at a timing when a predetermined time has elapsed from the end of the message. In the processing described with reference to the flowchart of FIG. 8, reception is not performed until the end of the message, but if the message length is known by P_REV (that is, if the timing of the end of the message is known), Even when only the time information is obtained by performing partial demodulation processing, the timing of time correction can be known. In the time adjustment process that moves in step S814, the time adjustment is executed at an appropriate timing that can be known as described above.

As can be understood from the above examples, in the embodiment of the present invention, in the CDMA communication, the period from the recognition of the start position of the sub information data, which is the sync channel message, to the time information (data) is obtained. In the period after obtaining this time information, demodulation processing (RF signal processing unit)
As compared with the case where at least the corresponding part of either or both of the decoding processes (baseband processing unit) is stopped and the sync channel message is demodulated and decoded from the beginning to the end, the power consumption can be kept low.
In the above description, the case of a system using a signal in accordance with a specific format has been described. However, according to the technical idea of the present invention, when the head of a message related to sub information can be detected, a demodulating operation (that The function unit) is stopped, and only the portion related to time information is selectively extracted and demodulated, thereby realizing low power consumption.

FIG. 9 is a flowchart showing the operation of another example when the time is adjusted based on the sync channel message in the embodiment of the present invention. This operation is executed under the control of the data processing operation restriction control unit 300 (FIG. 1).
In the embodiment of FIG. 9, the same processing as Step S801 to Step S805 of FIG. 8 (Step S901 → Step S902 → Step S903 → Step S904 → Step S90).
5) is executed to detect SOM = 1, stop the demodulation process, and stop the decoding process.
Steps S806 to S813 are repeated N times (Step S90).
6 → Step S907 → Step S908 → Step S909 → Step S907).

When N pieces of time information corresponding to the prescribed number N of processes are obtained by repeating this process, the reliability of the acquired time information is determined based on the time data (step S910).
For example, when N = 3 is set, when one of the two pieces of time information does not indicate correct time information, two of the three pieces are read by reading the information of the third sync channel message. If they match, the time information represented by the two is considered highly reliable, and the time can be corrected based on this time information. Further, in order to obtain highly reliable time data, for example, time data to be used as a reference for time correction may be obtained by averaging processing or determination processing according to the majority rule.

Similarly, it is possible to improve the reliability of the data by reading the time information repeatedly more times.
If a reliable value is recognized from the N pieces of time information that have already been acquired in step S911, the process proceeds to a time information correction process based on the reliable time information (step S912).

In addition, when a reliable value is not recognized from the time information that has already been acquired N times,
For example, a warning display indicating that it is difficult to properly perform time correction under the current environment is performed (step S913).
Since the timing at which the end of the message comes at P_REV is known, the time correction processing that is shifted in step S912 is executed at an appropriate timing as in the embodiment described with reference to the flowchart of FIG. It is the same.

In the above description, it will be further described in detail how to determine whether or not the correct time information is indicated from the relationship between the two data.
The sync channel message is sent in an integral multiple of a unit called a superframe every 80 ms. How many times it is sent in 80 ms is determined from MSG_LENGTH of the sync channel message.

The value of SYS_TIME in one sync channel message and the value of SYS_TIME in the subsequent sync channel message differ by a time corresponding to an integral multiple of 80 ms.
For example, in the sync channel message format of FIG. 5, each sync channel message is sent over 240 ms. In this case, two consecutive SYS_TIMEs are (10
It will show a value that is only 3 (in decimal). If two consecutive SYS_TIME data satisfy this relationship and other information (LP_SEC, LTM_OFF, DAYLT) matches, it can be determined that the value indicates correct information.

If the CRC added at the end of the sync channel message does not check whether there is an error in the data, the reliability of the data is not guaranteed. However, in the embodiment described with reference to FIG. Instead of checking the data reliability from the CRC of the message, the time information (SYS_TIME, LP_SEC, LTM_OFF, D
By reading (AYLT), it becomes possible to ensure the reliability of the data.

Therefore, in the embodiment described with reference to FIG. 9, in order to confirm the accuracy of the time data,
For example, the decoding process is continued without pausing until the data (CRC) representing the accuracy of time data different from the time data itself in the sub information data (sync channel message) is read and recognized separately. It is no longer necessary to perform operations such as checking the degree of accuracy of data, and while maintaining good power-saving characteristics, the time information (SYS_
TIME, LP_SEC, LTM_OFF, DAYLT) can be read to perform a highly accurate time adjustment operation.
In the present invention described above, the advantage of reading data intermittently as described above will be described more specifically.

FIG. 10 is a configuration example of the sync channel message shown in the CDMA2000 standard.
The sync channel message is set with a width of 2-1146 bits. For this reason, FIG.
From this sync channel format, data may be added up to 1146 bits in the future. In this case, it takes about 1 second to send 1146 bits at the sync channel data rate of 1.2 kbps. Of these, 51 bits are necessary for time correction, and the remaining bits are necessary only for the CRC check.

If the reliability of the data is improved by reading the time information only N times as in the present invention, the number of bits that need to be demodulated can be reduced to N × (51/1146), and all data can be demodulated. Compared with the case where it does, it becomes possible to reduce significantly the time to demodulate, and as a result, the power consumption can be reduced significantly.
In the above description, the case of a system using a signal in accordance with a specific format has been described. However, according to the technical idea of the present invention, when the head of a message related to sub information can be detected, a demodulating operation (that The function unit) is stopped, and only the portion related to time information is selectively extracted and demodulated, thereby realizing low power consumption.

On the other hand, the technique of the present invention described above with reference to the drawings is based on a main information signal for carrying a message or data intended for communication and a base station and a mobile station to enable transmission / reception of the main information signal. Sub-information transmitted from the base station in relation to the main information signal having a format in which a series of time-series alignment orders of predetermined information including time information are fixed in order to ensure synchronization of communication with the main information signal, etc. RF signal processing including processing for receiving a radio wave by a communication method using an information signal including a signal (for example, a signal representing a sync channel message in CDMA communication) and acquiring a baseband signal;
From the sub information data corresponding to the sub information signal in the data obtained by performing decoding processing on the acquired baseband signal (for example, data representing a sync channel message in the CDMA communication as described above) Baseband signal processing including processing for acquiring time data representing time information and generating time correction data based on the acquired time data;
The time point when the arrival of the leading portion in the time series alignment order of the sub information data is recognized as the effective time starting point, and the time data output in the time series alignment order of the sub information data is determined. Data processing operation restriction control for stopping the data processing operation of the corresponding part of at least one of the RF signal processing and the baseband signal processing over a period up to a time point preceding the current time by a predetermined period;
It is also summarized as a time data correction processing method characterized by executing.

According to such a time data correction processing method, power consumption for performing processing that is not involved in obtaining time correction data is suppressed, and significant power saving is achieved over the continuous use period of the device. Is realized.
Furthermore, in the technique described with reference to FIG. 9, the baseband signal processing is repeatedly performed on sub information data (for example, a signal representing a sync channel message in CDMA communication) that repeatedly arrives. For example, the time data is repeatedly acquired a plurality of times from data representing a sync channel message, and the time correction data is obtained based on the time data acquired a plurality of times, and the data processing operation restriction control is performed. Is executed in such a manner that the data processing operation in the corresponding part of the RF signal processing and the baseband signal processing is paused so that the time data can be repeatedly acquired a plurality of times. It is also summarized as a correction processing method.

According to this method, in order to check the accuracy of the time data, for example, the above-described pause is performed until data representing the accuracy of time data different from the time data itself in the sub information data is read and recognized separately. It is no longer necessary to continue the processing without checking the accuracy of the time data and to perform a highly accurate time correction operation while maintaining good power saving characteristics.

It is a block diagram showing the outline | summary of the timepiece device and module for timepiece devices as one embodiment of this invention. It is a block diagram showing the outline | summary of the internal structure of the baseband signal processing part in the module for timepieces of FIG. It is a block diagram showing the detail of a structure of the decoding part in the baseband signal processing part of FIG. It is a figure used in order to supplement description of the effect | action by the structure of FIG. It is a figure showing the format of the sync channel message in CDMA2000. It is a figure showing distribution of the bit stream corresponding to the division for every classification of the information which the data of a sync channel message should bear. It is a figure showing the timing of the start of a demodulation process, stop, and restart. It is a flowchart showing operation | movement of one Example when performing time correction based on a sync channel message. It is a flowchart showing operation | movement of the other Example when time adjustment is performed based on a sync channel message. It is a structural example of the sync channel message shown by the CDMA2000 standard.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Module for clock devices 11 ... Connection end part to antenna 12 ... Time data output end part 100 ... RF signal processing part 110 ... Antenna 200 ... Baseband signal processing part 21
0 ... Time data acquisition unit 211 ... Synchronization unit 212 ... Despreading unit 213 ... Data determination unit 2
14: Decoding unit 300 ... Data processing operation restriction control unit 2141 ... Deinterleaver 21
42 ... Derepeater 2143 ... Error correction processing unit 3141 ... Interleaver 3142 ...
Repeater 3143 ... Convolutional coding processing unit

Claims (11)

Predetermined information including time information for ensuring synchronization of communication between the base station and the mobile station so as to enable transmission / reception of the main information signal and the main information signal carrying the message or data to be communicated Receives and demodulates radio waves by a communication method using an information signal including a sub-information signal transmitted from the base station in relation to the main information signal, having a format in which a sequence of information is arranged in a time series An RF signal processing unit for obtaining a baseband signal;
Time data representing the time information is obtained from sub-information data corresponding to the sub-information signal in the data obtained by performing decoding processing on the baseband signal acquired by the RF signal processing unit. A baseband signal processing unit including a time data acquisition unit that obtains time correction data based on the acquired time data;
The time when the arrival of the head part in the sequence of the time series of the sub-information data acquired by the decoding process in the baseband signal processing unit is recognized as the effective time starting point,
Corresponding to at least one of the RF signal processing unit and the baseband signal processing unit over a period up to a point of time preceding the present time of the time data in a series of time series alignment ranks of the sub information data The data processing operation in the portion is paused, and the pause of the data processing operation is canceled in the period following the pause period, the data processing operation is activated, and time data is acquired by the baseband processing unit by the operation. After being performed, a data processing operation restriction control unit for pausing the data processing operation in the corresponding part,
A timepiece device comprising: The time data acquisition unit of the baseband signal processing unit acquires the time data repeatedly from the sub information data corresponding to the sub information signal that repeatedly arrives, and corrects the time based on the time data acquired a plurality of times. The data processing operation restriction control unit is configured to obtain data, and the data processing operation restriction control unit is allowed to repeatedly acquire the time data a plurality of times, the corresponding of the RF signal processing unit and the baseband signal processing unit. The timepiece device according to claim 1, wherein the timepiece device is configured to control a pause mode of a data processing operation in the portion. The time data acquisition unit of the baseband signal processing unit determines the reliability of the acquired time data based on a plurality of time data acquired continuously and repeatedly a plurality of times. The clock device described in 1. An RF signal processing unit that receives and demodulates radio waves in CDMA communication to obtain a baseband signal;
The baseband signal acquired by the RF signal processing unit is configured to perform decoding processing, and time data indicating time is acquired from data representing a sync channel message in the data obtained by the decoding processing, and the acquired time A baseband signal processing unit including a time data acquisition unit for obtaining time correction data based on the data;
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as an effective time, and the period from the data in the sync channel message to the time that precedes the current data output time by a predetermined period. A data processing operation restriction control unit that pauses the data processing operation in the corresponding part of at least one of the RF signal processing unit and the baseband signal processing unit,
A timepiece device comprising: The time data acquisition unit of the baseband signal processing unit acquires the time data repeatedly from data representing the repeatedly received sync channel message, and obtains time correction data based on the acquired time data And the data processing operation restriction control unit is configured to receive data in the corresponding portions of the RF signal processing unit and the baseband signal processing unit so that the time data is allowed to be repeatedly acquired a plurality of times. The timepiece device according to claim 4, wherein the timepiece device is configured to control a pause mode of a processing operation. Predetermined information including time information for ensuring synchronization of communication between the base station and the mobile station so as to enable transmission / reception of the main information signal and the main information signal carrying the message or data to be communicated Suitable for receiving radio waves by a communication method using an information signal including a sub-information signal transmitted from the base station in relation to the main information signal, having a format in which an order of time series of information is determined. The end of the connection to the antenna
An RF signal processing unit that receives a reception signal supplied from the connection end and demodulates the reception signal to obtain a baseband signal;
Time data representing the time information is obtained from sub-information data corresponding to the sub-information signal in the data obtained by performing decoding processing on the baseband signal acquired by the RF signal processing unit. A baseband signal processing unit including a time data acquisition unit,
The time when the arrival of the head part in the sequence of the time series of the sub-information data acquired by the decoding process in the baseband signal processing unit is recognized as the effective time starting point,
Corresponding to at least one of the RF signal processing unit and the baseband signal processing unit over a period up to a point of time preceding the present time of the time data in a series of time series alignment ranks of the sub information data A data processing operation restriction control unit for pausing the data processing operation in the part;
Is a monolithic structure for a timepiece device. A connection end to an antenna adapted to receive radio waves in CDMA communication;
An RF signal processor that receives a CDMA RF signal supplied from the connection end and demodulates the RF signal to obtain a baseband signal;
A time data acquisition unit configured to perform decoding processing on the baseband signal acquired by the RF signal processing unit, and acquiring time data representing time from data representing a sync channel message in the data obtained by the decoding processing; Including a baseband signal processor,
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as an effective time, and the period from the data in the sync channel message to the time that precedes the current data output time by a predetermined period. A data processing operation restriction control unit that pauses the data processing operation in the corresponding part of at least one of the RF signal processing unit and the baseband signal processing unit,
Is a monolithic structure for a timepiece device. Predetermined information including time information for ensuring synchronization of communication between the base station and the mobile station so as to enable transmission / reception of the main information signal and the main information signal carrying the message or data to be communicated Receives and demodulates radio waves by a communication method using an information signal including a sub-information signal transmitted from the base station in relation to the main information signal, having a format in which a sequence of information is arranged in a time series RF signal processing including processing for acquiring a baseband signal;
Time data representing the time information is acquired from the sub information data corresponding to the sub information signal in the data obtained by performing decoding processing on the acquired baseband signal, and the time is corrected based on the acquired time data Baseband signal processing including processing for generating data,
The time point when the arrival of the leading portion in the time series alignment order of the sub information data is recognized as the effective time starting point, and the time data output in the time series alignment order of the sub information data is determined. Data processing operation restriction control for stopping the data processing operation of the corresponding part of at least one of the RF signal processing and the baseband signal processing over a period up to a time point preceding the current time by a predetermined period;
The time data correction processing method characterized by performing this. The baseband signal processing is performed by repeatedly acquiring the time data from sub-information data corresponding to the sub-information signal that repeatedly arrives, and obtaining the time correction data based on the time data acquired a plurality of times. And executing the data processing operation restriction control to suspend the data processing operation in the corresponding part of the RF signal processing and the baseband signal processing so that the time data is repeatedly acquired a plurality of times. The time data correction processing method according to claim 8, wherein the time data correction processing method is executed in a manner. RF signal processing for receiving a radio wave in CDMA communication and demodulating it to obtain a baseband signal;
Time correction data is acquired based on the acquired time data by acquiring time data representing time from data representing a sync channel message in the data obtained by decoding the baseband signal acquired by the RF signal processing. Baseband signal processing including processing to generate,
The time at which the arrival of the head portion of the sync channel message is recognized is regarded as an effective time, and the period from the data in the sync channel message to the time that precedes the current data output time by a predetermined period. A data processing operation restriction control for stopping a data processing operation in a corresponding portion of at least one of the RF signal processing and the baseband signal processing;
The time data correction processing method characterized by performing this. Performing the baseband signal processing so that the time data is repeatedly acquired from data representing the sync channel message that repeatedly arrives, and time correction data is obtained based on the acquired time data; and The data processing operation restriction control is executed in such a manner that the data processing operation in the corresponding part of the RF signal processing and the baseband signal processing is paused so that the time data can be repeatedly acquired a plurality of times. The time data correction processing method according to claim 10.

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