JP7227483B2 - Radio receiver, transmitting station discrimination method and transmitting station discrimination program - Google Patents

Description

The present invention relates to a radio receiver for receiving Morse code.

For example, Patent Literature 1 discloses that a receiver that receives unmodulated continuous waves (CW) decodes received Morse code, converts it into characters, and displays the converted characters.

Japanese Patent Application Laid-Open No. 56-69956 (published on June 11, 1981)

In a wireless communication device that converts Morse code into characters and displays them as described above, when communicating with several transmitting stations, the displayed character strings are listed regardless of the transmitting station, so some characters It is not possible to tell which station sent the Morse code just by looking at the columns. For this reason, the user presumes each transmitting station from the content of the character string.

An object of one aspect of the present invention is to easily identify a transmitting station from a received Morse code.

In order to solve the above problems, a radio receiver according to an aspect of the present invention is a radio receiver that receives Morse code, comprising: a frequency detection unit that detects the frequency of the received Morse code; A transmitting station transmitting the Morse code being received by determining whether the frequency matches the transmitting frequency of a known station that transmitted the Morse code being received by the radio receiver. and a notification unit for notifying the result of the determination of the transmitting station.

In order to solve the above problems, a transmitting station determination method according to an aspect of the present invention includes a frequency detection step of detecting a frequency of a Morse code received by a wireless receiver; a station discriminating step of discriminating a transmitting station transmitting the Morse code being received by determining whether or not the transmission frequency matches a known station which transmitted the received Morse code; , and a reporting step of reporting the result of discriminating the transmitting station.

According to the above configuration, it is possible to easily identify the transmitting station based on the frequency detected from the currently received Morse code.

The radio receiver further includes a first registration unit that associates a new transmission station with a transmission frequency of the transmission station and registers the transmission frequency in the storage unit, and the station determination unit determines whether the detected frequency is registered. The transmitting station transmitting the Morse code being received is determined by determining whether or not it matches the transmission frequency associated with each of the at least one known station, and the second registration unit detects When the obtained frequency does not match the transmission frequency of at least one of the known stations, the transmission station may be associated with the transmission frequency and registered in the storage unit.

According to the above configuration, at least one transmitting station can be determined based on the detected frequency.

The radio receiver further comprises a keying speed detector for detecting a keying speed from the received Morse code, and when the station discriminator determines that the detected frequency is the transmission frequency of the known station, The transmitting station transmitting the Morse code being received is determined by determining whether or not the detected keying speed is the keying speed detected from the Morse code transmitted by the known station. good.

According to the above configuration, it is possible to easily identify the transmitting station based on the keying speed detected from the currently received Morse code.

The radio receiver further includes a second registration unit that associates a new transmission station with the keying speed of the transmission station and registers the detected keying speed in the storage unit. The transmitting station transmitting the Morse code being received is determined by determining whether or not the keying speed matches the keying speed associated with each of the at least one known station, and the second registration unit When the detected keying speed does not match the keying speed of at least one of the known stations, the transmitting station may be associated with the keying speed and registered in the storage unit.

According to the above configuration, at least one transmitting station can be determined based on the detected keying speed.

The radio receiver further includes a conversion unit that converts the received Morse code into character code data, and a character string display unit that displays a character string based on the converted character code data, and the notification unit , the display form of the character string may be changed according to the determined transmitting station.

According to the above configuration, the user can visually recognize that the transmission station has changed by changing the display form of the character string.

In the wireless receiver, the display form may be a display color.

According to the above configuration, by changing the display color of the character string, it is possible to recognize that the state of the character string has changed more impressively. This makes it easier to recognize that the transmitting station has changed.

In the wireless receiver, the display form may be a font.

According to the above configuration, by changing the display color of the character string, it is possible to recognize that the state of the character string has changed more impressively. This makes it easier to recognize that the transmitting station has changed.

In the wireless receiver, the display form may be a line feed.

According to the above configuration, it is possible to recognize that the transmitting station has changed due to the line feed of the character string.

A wireless receiver according to one aspect of the present invention may be implemented by a computer. In this case, a transmitting station identification program for realizing the radio receiver on a computer by causing the computer to operate as the frequency detection unit, the station identification unit, and the notification unit (software elements) included in the radio receiver. , fall within the scope of the present invention.

According to one aspect of the present invention, it is possible to easily identify a transmitting station from a received Morse code.

1 is a block diagram showing the configuration of a receiving system in a transceiver according to one embodiment of the present invention; FIG. 4 is a flow chart showing a processing procedure for station discrimination by a station discriminator in the transceiver;

[Embodiment]
An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG.

<Transceiver configuration>
FIG. 1 is a block diagram showing the configuration of a receiving system in a transceiver 1 according to this embodiment.

As shown in FIG. 1, a transceiver 1 (radio receiver) includes an antenna 2, an RF amplifier 3, a mixer 4, an IF filter 5, a digital signal processing circuit 6, a CPU (Central Processing Unit) 7, A character string display section 8 is provided.

RF amplifier 3 amplifies the RF signal received by antenna 2 . The mixer 4 converts the RF signal from the RF amplifier 3 into an intermediate frequency IF signal. The IF filter 5 removes interfering waves from the IF signal.

The digital signal processing circuit 6 is a circuit that performs various types of processing on the IF signal (Morse code) that has passed through the IF filter 5 . The digital signal processing circuit 6 is composed of a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), etc. in order to perform such processing. The digital signal processing circuit 6 includes a demodulation section 61, a CW decoding section 62 (keying speed detection section, conversion section), a frequency counting section 63 (frequency detection section), and a station discrimination section 64 (first registration section, second registration unit) and a memory 65 (storage unit).

The demodulator 61 demodulates the input Morse code into an audio signal by a predetermined demodulation method. The demodulator 61 mixes the signal of a signal generator (BFO: Beat Frequency Oscillator) with a frequency close to the frequency of the received signal, and performs processing such as generating a beat, thereby transforming the Morse code into an audio signal. Convert. This audio signal is amplified by an amplifier (not shown) and output as sound by a speaker (not shown).

The CW decoding unit 62 converts the input Morse code into character code data. More specifically, the CW decoding unit 62 distinguishes between long dots and short dots of Morse code, analyzes the arrangement of the long dots and short dots, and refers to the dictionary based on the analysis result. , to output the corresponding character code data.

The CW decoding unit 62 also detects the keying speed, which is the communication speed of the input Morse code. The CW decoding unit 62 expresses the presence or absence of the Morse code in the Morse code by a pulse signal consisting of "1" and "0", finds the timing at which the pulse in the pulse signal changes, and performs pulse count detection at that timing. to detect the keying speed. A CW decoding unit 62 outputs a digital value of the detected keying speed.

The frequency counting unit 63 counts the frequency of the input Morse code and outputs a digital value of the frequency. Further, the frequency counting unit 63 detects the deviation (frequency deviation) between the reception frequency set in the transceiver 1 and the frequency of the Morse code, and detects the frequency deviation as auto-tuning data used for auto-tuning processing. output as

The station discriminating section 64 discriminates the transmitting station being received based on the change in keying speed from the CW decoding section 62 . Further, the station discriminating section 64 discriminates the transmitting station being received based on the frequency change from the frequency counting section 63 . The station discrimination section 64 outputs the discrimination result based on the change in keying speed and the discrimination result based on the change in frequency as a station discrimination signal.

The memory 65 stores the transmission station (identification code, which will be described later, given to the transmission station) which has already received the Morse code, the keying speed detected by the CW decoding section 62 and the frequency detected by the frequency counting section 63 (transmission station frequency).

The CPU 7 is a control device that controls each part of the transceiver 1 . The CPU 7 has a character string display processing section 71 (notification section) and an auto-tuning processing section 72 as a receiving system of the transceiver 1 . The character string display processing unit 71 and the auto-tuning processing unit 72 are functional blocks implemented by the CPU 7 executing predetermined programs.

The character string display processing unit 71 outputs character string display data (character string display data) to the character string display unit 8 based on the character code data from the CW decoding unit 62 . Further, the character string display processing unit 71 changes the display form of the character string according to the determined transmitting station based on the station determination signal from the station determining unit 64, thereby notifying the user of the determination result of the transmitting station. inform. Examples of display modes to be changed include display colors, fonts, and line feeds.

When saving the character code data as a log, the CPU 7 saves the file in a different format for each transmitting station. File formats include, for example, rich text format and HTML (Hyper Text Markup Language) format.

Based on the auto-tuning data from the frequency counting unit 63, the auto-tuning processing unit 72 adjusts the frequency of the transmitting station (transmitting frequency) so as to match the receiving frequency.

The character string display unit 8 displays character strings based on the character string display data output from the character string display processing unit 71 .

<Station discrimination operation>
FIG. 2 is a flow chart showing the processing procedure for station discrimination by the station discrimination section 64 in the transceiver 1. As shown in FIG.

First, the station determination unit 64 determines whether or not there is character code data that has not been sent from the CW decoding unit 62 (step S1). While the CW decoding unit 62 is outputting the keying speed, there is a Morse code for transmitting character code data. Therefore, the station determination unit 64 can determine that character code data exists based on the existence of the keying speed.

When the station determination unit 64 determines in step S1 that there is character code data that has not yet been transmitted (YES), the frequency (transmission frequency) of the registered transmitting station stored in the memory 65 and the currently received transmission It is determined whether or not the frequencies of the stations match (step S2).

A transmitting station that has already been received by the transceiver 1 is registered as a known station in the memory 65 together with the transmitting frequency as will be described later. Therefore, if at least one transmitting station is registered, the station discriminating unit 64 determines whether or not the transmission frequencies of all registered transmitting stations match the frequency of the currently receiving transmitting station. judge.

If the station determining unit 64 determines in step S2 that the frequency of the registered transmitting station matches the frequency of the currently receiving transmitting station (YES), the matching transmitting station is stored in the memory 65. It is determined whether or not the registered keying speed matches the current keying speed detected by the CW decoding unit 62 (step S3).

The keying speed, like the transmission frequency, is also registered with the transmitting station. Therefore, if at least one transmitting station is registered, the station determining unit 64 determines whether or not the keying speeds of all registered transmitting stations match the detected keying speed.

If the station discriminating section 64 determines in step S3 that the registered keying speed matches the current keying speed (YES), it sets a station discriminating signal to the transmitting station for which it is determined that the frequency and keying speed match. (step S4), and the process returns to step S1.

The transmitting stations registered in the memory 65 are assigned identification codes in order of registration. Therefore, the station discriminating unit 64 creates setting information by associating the information of the station discriminating signal with the identification code, and registers the setting information by storing the setting information in the memory 65 .

When the setting information is registered and the processing after step S1 is repeated again, the station discriminating section 64 performs processing for determining whether or not the station discriminating signal of the setting information has been recognized after step S1. may Then, when the station discrimination signal of the setting information is recognized, the station discrimination section 64 may determine that the transmitting station has already been discriminated, and omit the processing of steps S2 to S4.

The station discrimination signal is a signal composed of a unique code, but the form of the station discrimination signal is not limited to such a signal. A specified number of station discrimination signals are prepared in advance, and may be individually associated with display colors and fonts, which will be described later.

If the station determination unit 64 determines in step S2 that the frequency of the registered transmitting station does not match the frequency of the transmitting station currently being received (NO), it creates registration information for a new transmitting station (step S2). S5). Also, when the station determination unit 64 determines in step S3 that the registered keying speed and the current keying speed detected by the CW decoding unit 62 do not match (NO), registration of a new transmitting station is performed. Information is created (step S5).

The transmitting station's transmission frequency and keying speed may change after each call. Therefore, it is sufficient that the registration information of the transmitting station is temporarily stored. For example, the number of registrations of transmitting stations that can be registered in the memory 65 is defined in advance, and when the defined number of registrations is exceeded, the oldest registration information is deleted in order. Alternatively, some or all of the registration information may be deleted when the power of the transceiver 1 is turned off.

The station discriminating unit 64 newly assigns the above identification code to the new transmitting station as main data of the registration information. Registration information is created in association with the keying speed acquired from 62 . In the registration information, the identification code represents the new transmitting station.

Then, the station discriminating unit 64 sets a station discriminating signal to the new transmission station for which registration information has been created as described above, creates setting information (step S6), and returns the process to step S1.

In the above procedure, the transmitting station is identified through the processing of steps S2 and S3. good too. In this case, the step S3 of comparing the registered keying speed with the current keying speed is omitted. Therefore, in steps S4 and S6, the station discriminating unit 64 sets the station discriminating signal to the transmitting station only on the basis of matching of the frequencies. is associated with the identification code to create registration information.

<Character string display operation>
The character string display processing section 71 converts the character code data acquired from the CW decoding section 62 into character string display data based on the station discrimination signal from the station discrimination section 64 . Further, the character string display processing unit 71 adds display form information specifying a display form to the character string display data, and outputs the character string display data to the character string display unit 8 . Display format information includes, for example, display color, font, and line feed.

When the display color is added to the character string display data as the display form information, the character string display processing unit 71 refers to a table in which a predetermined number of station determination signals prepared in advance and a plurality of different display colors are associated with each other. to specify the display color corresponding to the input station discrimination signal.

When a font is added to the character string display data as display form information, the character string display processing unit 71 refers to a table in which a predetermined number of station discrimination signals prepared in advance and a plurality of different fonts are individually associated with each other. A font corresponding to the input station discrimination signal is specified.

When adding a line feed as display form information to the character string display data, the character string display processing unit 71 adds a line feed code to the character string display data at the timing when the input station discrimination signal changes to another station discrimination signal. .

The character string display unit 8 displays character strings based on the character string display data to which the display form information has been added as described above.

When changing the display color of the character string according to the transmitting station, the character string display data of the display color corresponding to the station identification signal is output to the character string display section 8 because the station identification signal also changes when the transmitting station changes. be done. As a result, the character string display unit 8 displays the character string in a different display color each time the transmitting station changes.

When changing the font of the character string according to the transmitting station, the character string display data of the font corresponding to the station discrimination signal is output to the character string display unit 8 when the transmitting station changes. As a result, the character string display unit 8 displays the character string with a different font each time the transmitting station changes.

When the character string is changed depending on the transmitting station, the character string display data in which the line feed code is inserted is output to the character string display unit 8 at the timing when the station discrimination signal changes when the transmitting station changes. As a result, the character string display unit 8 feeds the character string each time the transmitting station changes.

<Effect of transceiver>
The transceiver 1 according to the present embodiment includes a frequency counter 63 that detects the frequency of the received Morse code, and a known station, which is a known transmitting station that transmitted the Morse code with the detected frequency received by the transceiver 1. A station discriminating unit 64 that discriminates the transmitting station transmitting the Morse code being received by discriminating whether or not it matches the frequency, and a character string display processing unit 71 that notifies the result of discriminating the transmitting station. It has

According to the above configuration, it is possible to easily identify the transmitting station based on the frequency detected from the currently received Morse code. This makes it possible to take appropriate measures.

In the operation of amateur radio, it is common to receive two stations already in communication, and call one of the stations after the communication ends, except for starting communication by issuing a CQ. In such a situation, if the two stations in communication can be discriminated, it is possible to easily recognize that the communication has ended, so that it is possible to make a smooth call. Also, even when listening to communications between other stations without transmitting, if the two stations can be discriminated, the content of the communications can be easily understood.

The station discriminating unit 64 discriminates whether or not the frequency detected by the frequency counting unit 63 matches the transmission frequency associated with each of at least one registered known station, thereby determining whether or not the Morse code being received. Determine the station that is sending the Further, when the detected frequency does not match the transmission frequency of the known station, the station determination unit 64 associates the transmission station with the transmission frequency and registers it in the memory 65 .

According to the above configuration, at least one transmitting station can be determined based on the detected frequencies.

A CW decoding unit 62 detects the keying speed from the received Morse code. Further, when the station determining unit 64 determines that the detected frequency is the transmission frequency of the known station, the detected keying speed is the keying speed detected from the Morse code transmitted by the known station. By determining whether or not, the transmitting station transmitting the Morse code being received is discriminated.

According to the above configuration, it is possible to easily identify the transmitting station based on the keying speed detected from the currently received Morse code.

The station discriminating unit 64 determines whether the keying speed detected by the CW decoding unit 62 matches the keying speed associated with at least one registered known station, thereby determining whether or not the Morse code being received is decoded. Determine which station is transmitting the signal. Further, when the detected keying speed does not match the keying speed of the known station, the station discriminating unit 64 associates the transmitting station with the keying speed and registers them in the memory 65 .

According to the above configuration, at least one transmitting station can be discriminated based on the detected keying speed.

The transceiver 1 includes a CW decoding section 62 that converts the received Morse code into character code data, and a character string display section 8 that displays character strings based on the converted character code data. Further, the character string display processing unit 71 changes the display form of the character string according to the determined transmitting station.

According to the above configuration, the user can visually recognize that the transmission station has changed by changing the display form of the character string.

The display form may be a display color. This makes it possible to recognize that the state of the character string has changed more impressively by changing the display color of the character string. Therefore, it is possible to more easily recognize that the transmitting station has changed.

Moreover, the display form may be a font. This makes it possible to recognize that the state of the character string has changed more impressively by changing the display color of the character string. Therefore, it is possible to more easily recognize that the transmitting station has changed.

Also, the display form may be a line feed. By inserting a new line in the character string, it is possible to recognize that the transmitting station has changed compared to the conventional radio receiver equipped with a Morse code decoding function that simply displayed the characters in a row. . In addition, a line break can be realized simply by inserting a line break code into character code data for displaying a character string. As a result, not only can the amount of display data be reduced, but the need to hold display color and font data is eliminated, and an increase in the amount of stored data can be suppressed.

[Example of realization by software]
The control blocks of the transceiver 1 (especially the CW decoding section 62, the frequency counting section 63, the station determining section 64 and the character string display processing section 71) are realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like. may be implemented by software.

In the latter case, the transceiver 1 is provided with a computer that executes instructions of software programs (including a transmitting station identification program) that implement each function. This computer includes, for example, one or more processors (the processor and the CPU 7 forming the digital signal processing circuit 6), and a computer-readable recording medium storing the above program.

In the computer, the processor reads the program from the recording medium and executes it, thereby achieving the object of the present invention. As the recording medium, a "non-temporary tangible medium" such as a ROM (Read Only Memory), a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. In addition, a RAM (Random Access Memory) for developing the above program may be further provided.

The program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. Note that one aspect of the present invention can also be implemented in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Additional notes]
The present invention is not limited to the above-described embodiments, but can be modified in various ways within the scope of the claims, and can be obtained by appropriately combining technical means disclosed in different embodiments. is also included in the technical scope of the present invention.

1 transceiver (radio receiver)
8 Character string display unit 62 CW decoding unit (keying speed detection unit, conversion unit)
63 frequency count section (frequency detection section)
64 station discrimination unit (first registration unit, second registration unit)
65 memory (storage unit)
71 Character string display processing unit (notification unit)

Claims (10)

A radio receiver for receiving Morse code,
a frequency detector that detects the frequency of the received Morse code;
Transmitting the Morse code being received by determining whether the detected frequency matches the transmission frequency of a known station that transmitted the Morse code received by the radio receiver. a station discriminating unit that discriminates a transmitting station that is
a notification unit that notifies the result of determining the transmitting station;
A radio receiver equipped with further comprising a first registration unit that associates and registers the new transmission station with the transmission frequency of the transmission station in the storage unit;
The station discriminating unit transmits the Morse code being received by determining whether or not the detected frequency matches any of the transmission frequencies associated with all the registered known stations. determine the transmitting station that is
When the detected frequency does not match any of the registered transmission frequencies of the known stations, the first registration unit registers the transmission station in association with the transmission frequency in the storage unit. Item 1. The radio receiver according to item 1. It also has a keying speed detector that detects the keying speed from the received Morse code.
When the station determining unit determines that the detected frequency is the transmission frequency of the known station, the detected keying speed is the keying speed detected from the Morse code transmitted by the known station. 3. The radio receiver according to claim 1, wherein the transmitting station transmitting the Morse code being received is discriminated by determining whether or not. further comprising a second registration unit that associates and registers the new transmission station with the keying speed of the transmission station in the storage unit;
The station discriminating unit discriminates the Morse code being received by determining whether or not the detected keying speed matches any of the keying speeds associated with all of the registered known stations. Determine the transmitting station that is transmitting,
When the detected keying speed does not match any of the registered keying speeds of the known stations, the second registration unit associates the transmitting station with the keying speed and registers it in the storage unit. 4. A radio receiver as claimed in claim 3. a conversion unit that converts the received Morse code into character code data;
a character string display unit for displaying a character string based on the converted character code data;
further comprising
5. The radio receiver according to any one of claims 1 to 4, wherein the notification unit changes the display form of the character string according to the determined transmitting station. 6. The radio receiver according to claim 5, wherein the display form is display color. 6. The radio receiver according to claim 5, wherein said display form is a font. 6. The radio receiver according to claim 5, wherein said display form is line feed. A transmission station identification program for causing a computer to function as the frequency detection section, the station identification section and the notification section in the radio receiver according to any one of claims 1 to 8. a frequency detection step of detecting the frequency of the Morse code received by the radio receiver;
Transmitting the Morse code being received by determining whether the detected frequency matches the transmission frequency of a known station that transmitted the Morse code received by the radio receiver. a station determination step of determining a transmitting station that is
a reporting step of reporting the result of determining the transmitting station;
Transmitting station determination method including.

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