JP2008141240A - Scanning receiver and scanning receiving method of incoming call history reference type - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically set a necessary channel as a priority channel in a situation where an incoming signal is actually detected in past scanning reception. <P>SOLUTION: The scanning receiver counts the number of times or reception time of incoming calls per reception channel during a predetermined time or the predetermined number of times of scanning cycles, and automatically sets a priority channel while referring to the past reception history. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a scanning receiver and a scanning reception method, and more particularly to a scanning receiver and a scanning reception method in which the priority order of scanning reception channels can be changed according to the incoming call history.

  In a communication system in which a plurality of wireless communication channels are set, a scanning reception function that receives signals while sequentially switching each wireless communication channel is often used. The scanning reception function is frequently used not only in commercial radio communication systems used for disaster prevention, police, security, transportation, but also in leisure radio communication systems such as amateur radio and personal radio.

  FIG. 6 is a flowchart showing basic scanning reception processing (normal scan) of a conventional wireless communication device. Taking a system having four reception channels Ch1 to Ch4 as wireless communication channels as an example, normal scan processing is performed when scanning reception is instructed by operating a scan key as shown in FIG. S100), the scanning process is started (S101), the scanning key is turned on / off again, and when the scanning switch is not operated (when the switch is on: S102 No), Ch1 to Ch4 are sequentially scanned. Whether there is an incoming call to each channel is confirmed (S103 to S106). If there is an incoming call on any channel during the scanning, the scanning is stopped on the receiving channel (S107), and while the incoming call exists, the receiving operation is continued (Yes in S108), and the incoming call is lost, and for a certain period of time. When the above non-incoming state is confirmed (after confirming the delay time has elapsed: S109, No), the process returns to S102 to confirm the presence or absence of the scan key operation (S102 No), and Ch1 to Ch4 are again set in S103 to S106. Scan sequentially. In S102, when the scan key is operated to instruct normal reception (S102 Yes), the scanning reception process is terminated (S110).

  In the above description, the route from S109 to S102 through the solid line route is shown. However, if there is an incoming call during the scan of S103 to S106 in this flow, the scan is stopped on the reception channel. (S107), while the incoming call continues, the scanning is stopped and the reception is continued (S108), and after receiving a non-incoming state (S109) for a certain period of time, as shown by the broken line, The flow may return to the next channel (any one of S103 to S106).

  In addition to the normal scan shown in FIG. 6, for example, a method called priority scan as shown in FIG. 7 is known as a scanning reception processing method. In this example, a predetermined specific channel among a plurality of reception channels is preferentially scanned and received. In this example, Ch3 is set as a priority channel among the four reception channels Ch1 to Ch4. That is, in FIG. 7, S111 to S113 are the same as in FIG. 6, when the scan key is operated (S111), the scan process is started (S112), and the scanning switch is kept on (S102). No), Ch1 to Ch4 are sequentially scanned to check whether or not there is an incoming call to each channel (S103 to S106), but Ch3, which is the priority channel, repeatedly scans Ch3 each time one other channel is received. This is a feature. If there is an incoming call on any channel during the scanning, the scanning is stopped on the receiving channel (S120), and while the incoming call exists, the receiving operation is continued (S121 Yes), and no incoming call is received for a certain period of time. When the above non-incoming state is confirmed (after confirming that the delay time has elapsed: S122, No), the process returns to S113 to confirm the presence / absence of the scan key operation (S113 No), and then sequentially scans S114 to S119 again. In S113, when the scan key is operated to instruct normal reception (Yes in S113), the scanning reception process is terminated (S123). In this example as well, it is possible to move from S122 to the reception processing of the next reception channel as in the route indicated by the broken line, as in the example of FIG. According to this process, Ch3 set as the priority channel is monitored and received more than other channels during one scanning cycle, so the probability of missing an incoming call chance is reduced.

  Another example of priority channel setting and scanning reception is described in Patent Document 1, for example. This is because, for example, P.D. S. When a number of information channels that are transmitted irregularly are set as priority channels according to the occurrence of information to be transmitted, such as B (Public Service Broadcasting), and the priority channel selection switch is operated Only the set priority channel is received by scanning.

If the priority channel is set in this way and the operation as shown in FIG. 7 or Patent Document 1 is performed, a specific reception channel to be noticed can be frequently monitored and received, so an incoming signal that occurs irregularly is missed. The possibility of receiving without increasing becomes high.
JP-A-56-161715

  However, in the conventional scanning receiver or the scanning reception method as described above, only a preset priority channel is preferentially scanned. For example, there is a channel that may receive incoming calls relatively frequently. When setting the channel as the priority channel, if it is not clear which channel corresponds to it, it may be counterproductive. That is, if it is not known that there are incoming calls relatively frequently and it is excluded from the priority channel, the chance of receiving the monitor is reduced, and the possibility of missing the incoming call increases. In particular, such troubles are likely to occur when moving over a wide area.

  As a conventional method for setting a priority channel, for example, as shown in FIG. 8, a PC (personal computer) 81 having software for setting a priority channel is connected to a radio 82 via a cable 83 or the like. Since the priority channel write setting is performed by the operation of the PC 81, the operation is extremely inconvenient. In addition, for this setting, the wireless device 82 requires an interface for connection with the PC, and the configuration becomes complicated. There was also a possibility.

  The present invention has been made in view of the problems of such a conventional scanning receiver or scanning reception method, and is necessary based on the situation where an incoming signal is actually detected in the past scanning reception. It is an object of the present invention to provide an incoming call history reference type scanning receiver and a scanning reception method capable of automatically setting as a priority channel.

  In the present invention, in order to achieve the above object, in the incoming history reference type scanning receiver according to claim 1, a plurality of reception channels are received in a preset order to detect the presence / absence of an incoming call, Then, in the scanning receiver that performs the reception operation, the number-of-arrivals counting means for counting the number of incoming calls for each reception channel within a predetermined time or during a predetermined number of scanning cycles, and the number of times set in advance as a result of the number of incoming calls The present invention is characterized by comprising priority channel setting means for setting a reception channel that has received an incoming call as a priority channel, and scanning reception control means for performing scanning reception according to the order set by the priority channel setting means.

3. The incoming call history reference type scanning receiver according to claim 2, wherein a plurality of reception channels are received in a preset order to detect the presence / absence of an incoming call, and a receiving operation is performed on a channel with an incoming call for a predetermined time. Incoming time counting means that counts the time of incoming calls for each receiving channel during the scanning cycle of a predetermined number of times, and a receiving channel that has received more than a preset time as a result of the arrival time counting is set as a priority channel Priority channel setting means, and scanning reception control means for performing scanning reception according to the order set by the priority channel setting means.
According to a third aspect of the present invention, in the incoming call history reference type scanning receiver according to the first or second aspect, the priority channel set by the priority channel setting means is received a plurality of times during one scanning cycle. It is characterized in that the monitoring time for the scan or scan stop is set longer.

The invention according to claim 4 relates to an incoming history reference type scanning reception method, comprising: receiving a plurality of reception channels in a preset order, detecting the presence / absence of an incoming call, and performing a reception operation on the incoming channel; In the scanning reception method including, an incoming frequency counting process for counting the number of times or time of incoming calls for each reception channel within a predetermined time or during a predetermined number of scanning cycles, and a predetermined number of times or a predetermined number as a result of the incoming frequency counting It includes a priority channel setting process that sets a reception channel that has been received for a set time or more as a priority channel, and a scanning reception process that performs scanning reception according to the order set by the priority channel setting process.
According to a fifth aspect of the present invention, in the incoming history reference type scanning reception method according to the fourth aspect, the priority channel set by the priority channel setting process is subjected to a reception operation a plurality of times during one scanning cycle. It is characterized in that the monitoring time for stopping the scan is set longer.

  Since the present invention is configured as described above, the following effects can be obtained. In the incoming history reference type scanning receiver according to claim 1, in the scanning receiver having a function of receiving scanning including a priority channel, there is an incoming call for each reception channel within a predetermined time period or a predetermined number of scanning cycles. The reception channel that has received more than the preset number of times is set as the priority channel, and scanning reception is performed according to the setting order. Unlike the case where a conventional channel is set as a priority channel, it is possible to preferentially scan a channel that actually receives an incoming call as a result of a previous scan. In addition, since these settings can be performed automatically, a PC is not required as in the prior art, and the operational convenience is extremely high.

  In the scanning history reference type scanning receiver according to claim 2, in the scanning receiver having a scanning reception function including a priority channel, there is an incoming call for each reception channel within a predetermined time period or a predetermined number of scanning cycles. The reception channel that has received the incoming time more than the preset time is set as the priority channel, and the scanning reception is performed according to the order set as the priority channel. Similar to the first aspect of the invention, unlike the case where a preset fixed channel is set as a priority channel, it is possible to preferentially scan a channel that actually received an incoming call as a result of scanning immediately before. Moreover, since these settings can be automatically performed, the operational convenience is high.

  According to a third aspect of the present invention, in the incoming call history reference type scanning receiver according to the first or second aspect, the set priority channel is set so that the reception operation is performed a plurality of times during one scanning cycle or the scan is stopped. Since the monitoring time is set to be long, the chance of receiving more increases compared to other channels, and the possibility of achieving the purpose of the priority scan is high.

  Since the invention according to claim 4 and claim 5 relates to an incoming history reference type scanning reception method, the above-described claims 1 to 3 are set as step processes, and if a program is created so as to execute these processes, The present invention can be realized in software in an electronic device equipped with a CPU or the like, and the same effects as those of the incoming call history reference type scanning receiver according to claims 1 to 3 described above can be obtained.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the technical terms, components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
FIG. 1 is a schematic block diagram of a wireless communication apparatus having a scanning reception function according to the present invention. In FIG. 1, reference numeral 1 denotes a receiving circuit which receives incoming power from a receiving antenna 2 by converting incoming radio waves into electrical signals. The receiving circuit 1 is subjected to various controls by the CPU 3, and scanning control and priority channel setting are included as one of the controls. Further, in order to provide each processing step of the present invention and a function as a scanning receiver, the CPU 3 includes a counter 4 for performing various counts such as a time count, an incoming count, an incoming time count, and the present invention. A write-only storage device ROM 5 that stores the programs necessary for the above, a readable / writable storage device RAM 6 that similarly stores data necessary for implementing the present invention and set priority channel information, and scanning reception on / off scanning. A key (scanning key) 7 and operation keys 8 for performing other controls are provided.

  With these configurations, as will be described in detail below, a plurality of reception channels are received in a preset order to detect the presence or absence of an incoming call, and a scanning receiver that performs a reception operation on a channel with an incoming call is realized. , Means and processing for counting the number of times, time, and frequency of incoming calls for each reception channel within a predetermined time or during a predetermined number of scanning cycles, and a reception channel that has received more than a preset number of times as a priority channel The priority channel setting means for setting and the scanning reception control means for performing scanning reception according to the set order are realized. Note that the case where the receiving circuit itself is configured as a software radio is also included.

  FIG. 2 is a flowchart showing an example of a history reference type scanning receiver and a scanning reception method according to the present invention. As in the conventional example, a system having four reception channels Ch1 to Ch4 is taken as an example. . In the process shown in this example, when the flow is started, first, when the scan key (FIG. 1) 7 is operated to instruct scanning reception (S1), the scan process is started (S2), and the scan key is again executed. 7 is checked, and when the scan key 7 is not operated (when the switch is on: S3 No), Ch1 to Ch4 are sequentially scanned to check whether there is an incoming call to each channel (S4 to S4). S6). At this time, if the priority channel is not yet set in the first scan, the normal scan is performed in the same manner as in the example of FIG.

  If there is an incoming call on any channel during the normal scan, the scanning is stopped on that reception channel (S7), and it is determined whether the number of incoming call detections on that channel exceeds a preset numerical value (S8). In this flow, the number of incoming calls confirmed in S8 is the value counted and accumulated in the previous scanning. However, as will be described later, the reception frequency counting process S10 is placed before S8, or When included in the process, it is the number of incoming calls in the current scan process. As a result of this determination, if the number of times exceeds a preset number, in the example of this figure, 5 (S8 Yes), this reception channel (Ch2 in the example of the figure) is set as a priority channel (Priority Channel) (S9). ). The flow after setting in this way continues to FIG. On the other hand, if the number of incoming channels is less than the predetermined number in S8 (S8 No), the reception number is counted (S10), and reception is continued while the incoming signal continues (S11 Yes). As described above, the reception count processing S10 may be performed before S8 or inside S8. When there is no incoming call in S11 (S11 No), and a non-incoming state is confirmed for a predetermined time or longer (check the delay time has elapsed: S12 No), after returning to S3 and confirming whether or not the scan key 7 is operated ( S3 No), S4 to S6 are sequentially scanned again. In S3, when the scan key 7 is operated to instruct normal reception (Yes in S3), the scanning reception process is terminated (S13). In the above flow, instead of the solid line route from S12 to S3, as shown by the broken line, the flow may return to the channel next to the channel on which the incoming call processing has been performed (any one of S4 to S6). This is the same as described in the conventional example.

  When the priority channel is set in this way, next, for example, scanning reception including the priority channel shown in FIG. 3 is executed. FIG. 3 is a flowchart showing an example of priority scanning reception in the present invention. Here, a case where Ch2 illustrated in FIG. 2 is set as the priority channel is shown. First, when the flow is started, first, when the scan key (FIG. 1) 7 is operated and scanning reception is instructed (No in S20), the scanning process is started, and Ch1 to Ch4 are sequentially scanned to each channel. In this case, scanning reception including Ch2 as a priority channel is performed. In this example, as shown in S21 to S26, while scanning channels Ch1, Ch3, and Ch4 other than the priority channel, the priority channel Ch2 is sandwiched every time and scanning is performed in the order of Ch1 → Ch2 → Ch3 → Ch2 → Ch4 → Ch2. Receive.

  If an incoming call is received on any channel during the scanning reception, scanning is stopped on the received channel (S27), and it is determined whether the number of incoming calls detected on the channel exceeds a preset value (S28). ). As a result of this determination, if the number of times exceeds a preset number, that is, five in the example of this figure (Yes in S28), this reception channel is set as the priority channel (Priority Channel) (S9). When this setting is made in FIG. 2 described above, it is handled in the same manner as the priority channel set in this flow.

  On the other hand, if the number of incoming channels is less than the predetermined number in S8 (No in S28), the reception number is counted (S30), and reception is continued while the incoming signal continues (S31 Yes). Note that the reception count processing S30 may be performed before S28 or inside S28, as in FIG. When there is no incoming call in S31 (No in S31) and it has been confirmed that there has been no incoming call for a certain time or longer (check the delay time has passed: S32 No), return to S20 and check whether the scan key 7 has been operated ( S20 No), S21 to S26 are sequentially scanned again. In S20, when the scan key 7 is operated and a normal reception instruction is given (S20 Yes), the scanning reception process is terminated (S33). In the above flow, instead of the solid line route from S32 to S20, as shown by the broken line, the flow may return to the next channel (any one of S21 to S26) of the channel on which the incoming call processing has been performed. This is the same as in FIG.

  In addition, the number of priority channels can be set to any number. However, when the number of priority channels is one, the scan is performed by replacing the latest channel with the newest channel and replacing the new channel with Ch2 when receiving the next priority channel. Do. If multiple priority channels are set, all the priority channels should be handled in the same row and the number of occurrences in one scanning cycle should be the same. In addition, the number of incoming calls for each channel is counted and integrated. It may be useful to increase the priority for those that have been performed frequently and to increase the number of scans.

  4 and 5 are flowcharts showing another embodiment of the present invention. In this example, the past incoming time is counted as the incoming call history. 4 shows a system including four reception channels Ch1 to Ch4 as in FIG. In the process shown in this example, when the flow is started, first, when the scan key (FIG. 1) 7 is operated to instruct scanning reception (S40), the scan process is started (S41), and the scan key is again executed. 7 is checked and when the scan key 7 is not operated (when the switch is on: No in S42), Ch1 to Ch4 are sequentially scanned to check whether there is an incoming call to each channel (S43 to S43). S46). At this time, since the priority channel has not yet been set in the first scan, the normal scan is performed in the same manner as in the example of FIG.

If there is an incoming call on any channel during the normal scan, the scanning is stopped on that reception channel (S47), and reception continues while there is an incoming call (S48), and at the same time, the incoming call detection time of that channel is counted (S48). S49). As a result of this counting, it is determined whether or not the accumulation time exceeds a preset numerical value (S50). If it exceeds (S50 Yes), that channel is set as the priority channel (S51), but it has not exceeded. If this is the case, the process proceeds to S51, or if S49 is a process that takes into account the delay time, the process proceeds to S43 to S46 and the scanning process is resumed. As a result of this determination, if it is determined that the preset reception time is exceeded, this reception channel (Ch2 in the example in the figure) is set as the priority channel (Priority Channel), and the subsequent flow is shown in FIG. Continue to (B). If no incoming signal is received in S48 (S48 No), if a non-incoming state for a certain time or longer is confirmed (delay time has elapsed: S52 No), the process returns to S42 to return to the scan key 7 After confirming the presence / absence of the operation (No in S42), S43 to S46 are sequentially scanned again. In S42, when the scan key 7 is operated and a normal reception instruction is given (S42 Yes), the scanning reception process is terminated (S53).
In the above flow, instead of the solid line route from S52 to S43, as shown by the broken line, the flow may return to the next channel (any of S43 to S46) after the channel that has received the incoming call. This is the same as the example of FIG.

After the priority channel is set in this way, next, for example, scanning reception including the priority channel shown in FIG. 5 is executed. FIG. 5 is a flowchart showing an example of priority scanning reception when the priority channel setting is based on the arrival time in the present invention. Here, a case where Ch2 is set as the priority channel is shown.
When the flow is started, first, the operation of the scan key (FIG. 1) 7 is confirmed. When scanning reception is instructed (No in S60), the scanning process is started, and Ch1 to Ch4 are sequentially scanned to The presence or absence of an incoming call to the channel is confirmed. Here, scanning reception including Ch2 as a priority channel is performed, and during the scanning of channels Ch1, Ch3, and Ch4 other than the priority channel as in the example described in FIG. In addition, scanning reception is performed in the order of Ch1 → Ch2 → Ch3 → Ch2 → Ch4 → Ch2 across the priority channel Ch2 (S61 to S66).

  If there is an incoming call on any channel during this scanning reception, scanning is stopped on that reception channel (S67), and reception continues while there is an incoming call (S68), and at the same time, the incoming detection time of that channel is counted. (S69). As a result of this counting, it is determined whether or not the accumulation time exceeds a preset numerical value (S70). If it exceeds (S70 Yes), that channel is set as a priority channel (Priority Channel) (S71). If not, the process proceeds to S72 delay time progress confirmation, or if S69 is a process taking the delay time into account, the process proceeds to S61 to S66 to resume the scanning process. Note that the flow after setting as a priority channel in S51 of FIG. 4 continues to S72 of this diagram. However, if there is one priority channel, the most recently selected channel is set as the priority channel. When allowing a plurality of settings, there are various setting methods as described above.

As described above, according to the present invention, the priority channel is set based on the past reception history, so that the priority channel can be received according to the situation at that time, and the setting channel is automatically set. Therefore, there is no need for labor and equipment for connecting to a personal computer with a cable as in the prior art, and the convenience can be remarkably improved.
In addition, although several Example of this invention was described above, this invention does not need to be limited to these examples, A various deformation | transformation is possible. First, the radio apparatus to which the present invention is applied can be variously modified in addition to the one shown in FIG. 1, and it is needless to say that not only the receiver circuit but also a transmitter may be provided.

  In addition, a plurality of priority channels can be set, and scanning information obtained by editing only the priority channels set by referring to the incoming call history according to the present invention is stored, and this is called as described in Patent Document 1. Only the priority channel may be received by scanning. In the embodiment, the priority channel is set for each scanning cycle. However, if the processing is too complicated, or if the priority channel is frequently changed, it is inconvenient. -You may make it refer to the frequency | count of arrival and time in a cycle.

  In addition, when multiple priority channels are set and the priority is given to a channel with a large number of incoming calls or a long incoming time, the scanning reception method is not limited to the order of reception with other channels. Setting the reception monitoring time at one time longer than that of the non-priority channel can also be preferentially monitored. That is, if the scan stop time of the non-priority channel is set to 100 ms, for example, the priority channel is set to 300 ms, and the monitor time of 500 ms may be set to further increase the priority. Further, it is useful to perform scanning of the priority channel by combining both the increase / decrease in the monitoring time and the increase / decrease in the number of scanning in this way, in order to perform a variety of operations.

  In addition, if the processing described above is configured as a program that can be processed by a computer, the present invention can be realized by installing the software in an electronic device equipped with a necessary CPU and memory. Is possible. In particular, in recent years, the number of digital processing is increased, and a CPU or DSP is often provided for the processing, so that implementation with software will be easy.

  That is, when the present invention is implemented as a scanning reception method, for example, at least the reception circuit 1, the antenna 2, the CPU 3, the ROM 5, and the RAM 6 in the configuration diagram shown in FIG. 1 are provided, and the ROM 5 includes a plurality of reception channels. It is configured to detect the presence or absence of incoming calls in a preset order, and to perform scanning reception for receiving operation processing on channels with incoming calls, and for each reception channel within a predetermined time or during a predetermined number of scanning cycles An incoming frequency counting process for counting the number of times or time of incoming calls, and a priority channel setting process for setting a reception channel that has received more than a preset number of times or a preset time as a priority channel as a result of the incoming frequency counting; Scanning reception that performs scanning reception according to the order set by the priority channel setting process Storing a program including a sense, the. And the list etc. set as a priority channel are suitably memorize | stored in RAM6, and by executing with a program, this invention can be implemented similarly to each Example mentioned above, and the same effect can be acquired. Further, as described in each embodiment, the priority channel set by the priority channel setting process is such that the reception operation is performed a plurality of times during one scanning cycle or the monitor stop time for scanning is set to be long. Processing can also be included.

It is a general | schematic block diagram of the radio | wireless communication apparatus provided with the scanning receiver which concerns on this invention. It is a flowchart which shows an example of the log | history reference type | mold scanning receiver of this invention, and a scanning reception method. It is a flowchart which shows the other example of the log | history reference type | mold scanning receiver and scanning reception method of this invention. It is a flowchart which shows the other example of the log | history reference type | mold scanning receiver and scanning reception method of this invention. It is a flowchart which shows the other example of the log | history reference type | mold scanning receiver and scanning reception method of this invention. It is a flowchart which shows the example of control of the conventional scanning receiver. It is a flowchart which shows the other example of control of the conventional scanning receiver. It is a conceptual diagram which shows the apparatus outline in the case of the priority channel setting to the conventional scanning receiver.

Explanation of symbols

  1 receiving circuit, 2 antenna, 3 CPU, 4 counter, 5 ROM, 6 RAM, 7 scan key, 8 operation key.

Claims (5)

  In a scanning receiver that receives a plurality of reception channels in a preset order and detects whether there is an incoming call, and performs a reception operation on a channel with an incoming call, for each reception channel within a predetermined time or during a predetermined number of scanning cycles Set by the number of incoming calls counting means for counting the number of incoming calls, a priority channel setting means for setting a reception channel that has received more than a preset number of times as a result of the number of incoming calls as a priority channel, and setting by the priority channel setting means And a scanning reception control means for performing scanning reception in accordance with the received order. An incoming call history reference type scanning receiver comprising:   In a scanning receiver that receives a plurality of reception channels in a preset order and detects whether there is an incoming call, and performs a reception operation on a channel with an incoming call, for each reception channel within a predetermined time or during a predetermined number of scanning cycles Incoming time counting means for counting the time when there was an incoming call, priority channel setting means for setting a receiving channel that is equal to or more than a preset time as a result of the incoming time counting as a priority channel, and setting by the priority channel setting means Scanning reception control means for performing scanning reception according to an order, and an incoming call history reference type scanning receiver.   3. The priority channel set by the priority channel setting means is configured such that a reception operation is performed a plurality of times during one scanning cycle or a scan stop monitoring time is set long. Incoming call history reference type scanning receiver.   In a scanning reception method that receives a plurality of reception channels in a preset order, detects the presence or absence of an incoming call, and performs reception operation processing on a channel with an incoming call, for each reception channel within a predetermined time or during a predetermined number of scanning cycles An incoming frequency counting process for counting the number of times or time of incoming calls, and a priority channel setting process for setting a reception channel that has received more than a preset number of times or a preset time as a priority channel as a result of the incoming frequency counting; And a scanning reception process for performing scanning reception according to the order set by the priority channel setting process.   5. The incoming call history according to claim 4, wherein the priority channel set by the priority channel setting process is set such that a reception operation is performed a plurality of times during one scanning cycle or a scan stop monitoring time is set longer. Reference scanning reception method.

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