JPH0681013B2 - Scanner device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to the field of scanning radio receivers (scanner devices), and more particularly to scanners having a digital tuning mechanism using, for example, a PLL tuning circuit. The present invention relates to a device for automatically and sequentially registering a frequency to a channel of a scanner device when a "meaningful" frequency is detected during a frequency band search. The "meaningful" frequency includes the frequency of the received radio wave that carries information such as voice or carrier.

[Prior Art] Conventionally, in a digital channel selection type programmable scanner, frequency programming is performed by the following two methods.

(I) A method of inputting a frequency value from the keyboard and registering it in the channel.

(Ii) A method of sequentially sweeping a frequency in units of step frequency within a predetermined search range, and transposing the search frequency to a channel by key operation as necessary when the reception operation is stopped and the search operation is stopped.

[Problems to be Solved by the Invention] However, it is dangerous to perform such work while operating an automobile or an aircraft, and there is an inconvenience that the operation can be normally performed only while the vehicle is stopped.

[Means for Solving Problems] In order to solve the above problems, the present invention provides a scanner device having a digital channel selecting mechanism, which has a frequency search operation started by an instruction such as a key input. , Is configured to automatically transfer the received frequency to the scanner channel frequency memory when the radio wave is received or the situation where the audio signal is confirmed, and the channel memory is sequentially filled, and Regardless of the transfer order to the channel frequency memory or the transfer destination address, the scan operation is performed according to the order of high and low frequencies, and the channel memory already existing after the designated key is operated once at the start of the search operation. A warning is given by the voice synthesized by the electronic circuit that the above data will be rewritten, and the above key is input again. It is characterized in that the search operation is started when there is.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention, and most of these blocks can be entirely configured as a microprocessor. The figure includes a receiver or scanner 10, which is controlled by a receiver tuning controller 12 via a control signal on control line 13. The control mode will be described later.

The center of the microprocessor is a system control unit 14, which receives an operation command from a keyboard 16 for manual operation from the outside via a line 15. A search start command from the keyboard is sent via the system control unit 14
It is given to the search frequency determining circuit 20 via 18. Also,
The circuits 19 and 21 give data on the step frequency to be designated in the search and data on the frequency range of the search, respectively. As a result, the data regarding the search frequency is given to the receiver tuning control unit 12 via the line 22, and the search for the receiver 10 is started. The feedback signal of the receiver 10 is given to the reception discriminating unit 24 via the line 23, and when the frequency being searched is not a "meaningful" frequency such as when there is no signal, the reception discriminating unit 24
The system control unit 14
Then, the signal on the line 18 is transmitted to the search frequency determining circuit 20 and the search frequency determining circuit 20 provides the data on the search frequency determining circuit 20 to the receiver 10 via the receiver tuning controller 12 so as to be stepped to the next search frequency. The reception determination unit 24 is "meaningful"
When it is detected that the frequency is detected, the system control unit 14 receiving the detection result generates a signal on the line 26 to temporarily stop the search operation. This signal is given to the receiver channel selection control unit 12 and suspends the temporary search operation until the current search frequency is transferred to the storage unit 30 via the line 28. The memory unit 30 may be a channel frequency memory, which has m of 31-1, 32-2, 32-3, 32-4, ... 32-m.
Storage elements corresponding to the individual storage channels. Each element includes a reception parameter storage unit 34 and an address circuit 36. In the reception parameter storage unit 34,
In this case, the transcribed frequency data is stored. In the embodiment, the storage elements of the number of storage channels of m> 4
Although 32 is shown, it may be configured by the memory unit 30 of m = 1, that is, a single channel element. Each storage element 32 has an address circuit 36 which receives an address signal from the system controller 14 via line 37. If data already exists in the reception parameter storage unit 34 at the corresponding address position and is not updatable, a write inhibit signal is applied from the address circuit 36 to the system control unit 14 via the line 39. Therefore, in the transfer command state of the search frequency, the frequency data to be transferred can be written in the assigned address of the reception parameter storage unit 34. An address circuit 36 may be provided for each storage element 32 as shown, or a separate address circuit for all channels 1-m may be provided to provide a unique channel write inhibit indication for each channel. It may be configured as follows.

With the end of transcription, the search mode of operation returns to the beginning and continues. Even if this is done after a predetermined time has passed,
Alternatively, a transfer completion instruction signal may be given from the storage unit 30 to the system control unit 14 via the line 40. In the above manner, the frequencies searched one after another are transcribed to the write-enabled addresses of the reception parameter storage unit 34 of the designated channel. Of course, the search operation may be stopped when all the writing is completed. The number of frequencies to be transferred is automatically determined by the data from the step frequency designating circuit 19 and the frequency range designating circuit 21, but if the already registered frequency data is prohibited to be updated or the address of that data is Depends on the case where it is write protected.

The system control unit 14 uses a speaker 44 through a voice synthesis circuit 42.
It is connected to the. Normally, when operating a car or aircraft,
Since the operation of the scanner is often performed by a fumbling, for example, the search start key may be accidentally touched.
In order to prevent danger at this time, the system controller 14 causes the voice synthesis circuit 42 and the speaker 44 to respond to the signal from the search start button by, for example, "Search start is OK.
A voice message such as "?" Is generated.
If the search start button is pressed again within a predetermined time to start the search, the scanner can be operated without anxiety.

When scanning the frequency data that has been posted,
The read address data from the system control unit 14 is given to the address circuit 36 via the line 37, the frequency data of the corresponding address is read from the reception parameter storage unit, and the receiver tuning control unit 12 via the line 46. Given to. This frequency data is also given to the system controller 14. The system control unit uses this data as feedback data for giving the designated scanning order. For example, in search, when a station with a strong electric field is encountered, it may be received at several places other than the center frequency, but if these happen to be on distant channels, they will be distracted when scanning. Therefore, it is advantageous in use to scan these frequencies back and forth as much as possible.

Therefore, it is possible to perform scanning based on, for example, the order of frequencies regardless of the order of registration.

EFFECTS OF THE INVENTION As described above, according to the present invention, the frequency registration operation can be performed on a series of channel memories by one key operation.

[Brief description of drawings]

The figure shows a block circuit diagram of a scanner device of one embodiment of the present invention, 12 is a receiver tuning control unit, 14 is a system control unit,
Reference numeral 20 is a search frequency determination circuit, 24 is a reception determination unit, 32 is a storage element, 34 is a reception parameter storage unit, and 36 is an address circuit.

Claims (1)

[Claims] 1. A scanner device having a digital channel selection mechanism, which has a frequency search operation started by an instruction such as a key input, in a situation where a radio wave is received or a voice signal is confirmed. It is configured to automatically transfer the received frequency to the scanner channel frequency memory in the reached state, and to fill the channel memory sequentially, regardless of the transfer order to the channel frequency memory or the transfer destination address. A voice synthesized by an electronic circuit that the scan operation is performed according to the order of high and low, and the data on the existing channel memory is rewritten after the designated key is operated once at the start of the search operation. The warning is given by the above, and the search operation is started when the above key is input again. Na apparatus.