JPH0424894B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a radio receiver having a function of audibly announcing the name of a selected broadcasting station, and in particular, when the same frequency is allocated to multiple broadcasting stations, the present invention attempts to output only the name of the broadcasting station in the corresponding area. It is something. Improving operability is important for car radios, and for this reason receivers that perform mechanical channel selection usually include a push button for directly specifying the desired station in addition to a rotary dial. Electronic tuning types include a digital tuning type that specifies a broadcasting station (more specifically, its frequency), and a search tuning type that gradually increases and decreases the designated reception frequency and stops changing the frequency when the desired station is received. Even if the received broadcast wave is from the desired station, you cannot tell unless you look at the frequency display etc.
It interferes with driving. The present invention is a radio receiver that announces the name of a broadcasting station by voice when a channel is selected. Especially when the same frequency is shared by multiple broadcasting stations, the present invention provides an inexpensive and general-purpose method that only announces the name of the broadcasting station in the corresponding area. This allows output to be output in a flexible configuration. If this method is applied to a search channel selection type radio receiver, the listener can select the desired station by simply instructing to start searching, and has the advantage that it does not cause any particular hindrance to driving even when used in a car. . This will now be described in detail with reference to embodiments shown in the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, reference numeral 10 denotes a digital electronic tuning tuner of a radio receiver, which, although not shown, has a high frequency amplification section, a local oscillation section, a frequency mixing section, an intermediate frequency amplifier, a PLL-incorporated tuning circuit, etc., as is well known. If it is a digital tuning type, the tuning circuit includes a memory that stores the broadcast frequency information of each broadcast station, a selection switch that specifies any desired one of the broadcast frequency information, and a memory that stores the selected broadcast frequency information and the local oscillation frequency (for details, It consists of a comparator that compares the local oscillation frequency (by frequency division, etc.), and a local oscillation frequency changing circuit that gradually increases or decreases the local oscillation frequency while the comparator indicates a mismatch.If it is a search channel selection type, the local oscillation frequency It consists of a changing circuit and a circuit that temporarily or permanently stops changing the local oscillation frequency when receiving broadcast waves using the output of the intermediate frequency amplification section. 12 is an editing circuit consisting of, for example, a microcomputer;
When receiving the tuning completion signal _S1 from the intermediate frequency amplification stage or comparator of the tuner 10, the received broadcast frequency data at that time, specifically local frequency data FD
take in. Reference numeral 14 denotes a lookup table, which is composed of a ROM (read-only memory) and stores name information of each broadcast station and its broadcast frequency information. Broadcasting station names are relatively long, such as NHK Tokyo 1st Broadcasting and Chubu Nippon Broadcasting, and if you add "desu" to the announcement, it becomes even longer, so you can write each phrase for each phrase, such as "Chubu", "Nihon", and "Broadcast". be remembered. Editing circuit 12
accesses the table 14 using the frequency data FD taken in from the tuner 10 as an address, and reads out the broadcasting station name information corresponding to the data for each phrase. For example, the above-mentioned phrases "Chubu", "Japan", and "Broadcasting" are stored in the n, n+1, and n+2 addresses of table 14 (in detail, they are not these words, but the memory addresses of the speech synthesis circuit described later). , the editing circuit 12 accesses the table 14 by outputting the first address n of the frequency data FD and further a predetermined number of subsequent addresses n+1 and n+2 in this example. The broadcasting station name information SI read out from the table 14 in this manner is input to the speech synthesis circuit 16, which outputs a synthesized speech output SVO. The speech synthesis circuit 16 is of the Percoll type in this example, and includes a synthesis controller 18, an audio data memory 20, a signal processor 22, and a D/A converter 24. The memory 20 also consists of ROM,
Audio data is stored for each phrase. The broadcasting station name information SI is an address of the memory 20. For example, if the information SI is "Chubu", "Japan", or "Broadcasting", these become address signals for the storage area of the memory 20 that stores audio data corresponding to the phrases, and the data are output one after another. This is input to the signal processor 22 via the synthesis controller 18, and changes the frequency characteristics of the processor 22, which is a digital filter. Although not shown, an impulse or random noise is input to the processor, and when it passes through the filter 22 whose frequency characteristics have been changed according to the audio data, the output becomes a digital audio signal representing each phrase, and the output is sent to the D/A converter 24.
When it is converted to DA, it becomes an analog audio signal SVO. This is input to the low frequency amplification section of the radio receiver, and the sound is emitted from the speaker. One broadcasting station does not necessarily correspond to one broadcasting frequency, and broadcasting stations in multiple regions that are far apart from each other may use the same broadcasting frequency. The table below shows an example of assigning the same frequency to multiple stations, with 7 stations at 1197KHz and 2 stations at 1233KHz.
There are two stations at 1269KHz, each assigned the same frequency in areas far enough apart to avoid interference.

【table】

[Table] Note: Those marked with * are not broadcasting stations. The present invention makes it possible to announce the name of a broadcasting station only in that area when such a frequency (hereinafter referred to as a multi-station frequency) is received. FIG. 2 is an explanatory diagram of the main parts, and FIG. 3 is an overall flowchart. According to the flowchart of FIG. 3, first, when the tuner 10 outputs the tuning completion signal _S1 , the editing circuit 12 reads the frequency data FD at that time.
The contents of the next judgment step A and processing step B are shown in FIG. In the example in Figure 2, the FD is 1008 (K
Hz). When receiving frequency FD=1008 is given, editing circuit 12 refers to broadcasting station number table 14A of lookup table 14. This table 14A shows the corresponding frequency
The number N of broadcasting stations and the start address of the lookup table (in this case, referring to the next single station frequency table 14B) are written in the area whose address is FD. This table 14B uses frequency data when there is only one broadcast station per broadcast wave (this is called a single station frequency) as an address, and stores the district number where the broadcast station is located, so the frequencies match. Then, it can be determined that it is a single station, and the broadcasting station name is detected by referring to a broadcasting station name table (not shown) for single stations (in which the frequency FD and the corresponding broadcasting station name are stored). (not shown in FIGS. 2 and 3). Thereafter, the process moves to editing of speech synthesis (determination step C and subsequent steps in FIG. 3). However, if the number N of broadcasting stations for frequency FD is 2 or more, a comparison with table 14B will not result in a match (there is no match in this table). In this case, the process proceeds to step B. The flow in FIG. 2 shows this part in detail. That is, (1) the preset memory contains information on multiple broadcast frequencies that can be received in each region such as Kanto, Shin-Etsu, and Tokai (including 1 broadcast frequency).
Since some broadcast frequency information is stored in advance (some for broadcasting stations, and some for multiple broadcast stations), the broadcast frequency information stored in this preset memory is read out sequentially, and table 14B is read out using this as an address. , 1 broadcasting frequency 1 broadcasting station, that is, a single station frequency, there is a readout output, and if it is district N, compare it with table 14B to determine the district number, or (2) perform channel selection operations such as scanning. Automatically receive a frequency other than FD=1008 and identify the area. The RAM in FIG. 2 is a random access memory that stores several frequencies received in this way, and FDa, FDb, . . . are the frequencies received at that time. Next this frequency data
FDa, FDb, . . . are compared with table 14B, and if there is a match, the district number is read out. Then, by referring to the broadcasting station name table 14C using this area number and FD=1008, it is possible to know the broadcasting station name only for the corresponding area from among the multiple frequencies. After this, the process moves to voice synthesis processing similar to that for a single station frequency. From step C onward in FIG. 3, all broadcast station names are not announced as they are pronounced, but some are output as frequencies. That is, there are many broadcast station names, and it is not economical to prepare all of them in the lookup table 14 and the audio data memory 20. Therefore, it is preferable to announce the station name of a representative broadcasting station, and announce the frequency of the others. In this case, "500" and "90" are stored in the lookup table 14 and audio data memory 20.
Audio information for phrases such as "3" and "KHz" is also prepared. By the above-described method, the name of a broadcasting station can be known from the received frequency, and even if there are a plurality of broadcasting stations for one broadcasting frequency, the announcement can be made to the user without error. As described above, according to the present invention, when a channel is selected, the name of the broadcasting station is announced, and there is no need to visually check the frequency or the station name display, so it does not interfere with driving, especially when using a car radio. This is very suitable as it does not cause any problems. In particular, even when the same frequency is assigned to multiple broadcast stations in different regions, there is no need for the user to manually operate the region selection switch, etc., which significantly improves operability (on expressways every 2 to 3 hours). In addition, it is possible to specify the area using an existing electronic tuner without using an expensive system to specify the area, making it low cost and highly versatile. Region identification is possible by configuration. There is also the advantage that erroneous announcements due to forgetting operations do not occur at all.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is an explanatory diagram of the main part, and FIG. 3 is an overall flowchart. In the figure, 10 is a digital electronic tuning tuner, 12
is an editing circuit, 14 is a lookup table, 16
is a speech synthesis circuit.

Claims (1)

[Claims] 1. Broadcasting station name information is stored in correspondence with broadcasting frequency information and regional information, and each broadcasting frequency information and its regional information are stored when one broadcasting station is assigned to one broadcasting frequency. an electronic tuning tuner having a preset memory in which information on a plurality of broadcast frequencies that can be received in one area is preset; and a control means for accessing the storage means using the storage means to select received broadcasting station name information and outputting the selected received broadcasting station name information in synthesized voice, the control means for controlling each of the broadcasts stored in the storage means. a determining means for determining whether or not a plurality of broadcast stations are assigned to the frequency information at the time of completion of the channel selection based on the frequency information; region identification means for accessing the storage means to specify regional information using other frequency information stored in a preset memory, and the identified regional information and frequency information at the time of completion of the channel selection A radio receiver comprising a selection means for accessing the storage means and selecting broadcast station name information for a corresponding area. 2. Storage means for storing broadcasting station name information corresponding to broadcasting frequency information and regional information, as well as storing each broadcasting frequency information and regional information for each broadcasting station assigned to one broadcasting frequency; An electronic tuning tuner having a sweep tuning means receives received frequency information at the time of completion of tuning from the electronic tuning tuner, accesses the storage means using the frequency information, selects received broadcasting station name information, and synthesizes voice. In the in-vehicle radio receiver, the control means is configured to allocate a plurality of broadcast stations to the frequency information at the time of completion of the channel selection based on the respective broadcast frequency information stored in the storage means. a determining means for determining whether or not a plurality of broadcasting stations are assigned; a region identification means for accessing the storage means to identify regional information; and a region identification means for accessing the storage means based on the identified region information and frequency information at the time of completion of the channel selection to identify a broadcast station in the corresponding region. 1. A radio receiver comprising selection means for selecting name information.