JPS5943625A - Receiver - Google Patents

Abstract

PURPOSE:To enable the receiving of a desired broadcast program while eliminating the need for a search time of an inspection station, by storing a data of the inspection station having the same content as that of the respective broadcast content at each frequency in a predetermined receiving band. CONSTITUTION:An operating section 8 is operated, the same data of the inspection station as that of each broadcast station is stored at each frequency of a prescribed band in a memory 7 via a control CT section 5, and the data of the relating inspection station and the present station receiving desired broadcast is stored temporarily in areas 6a, 6b of a memory 6 respectively. A receiving data of the present station is given to a level discriminating circuit 3 and a demodulation level detecting circuit 4 from a tuner 2 with a voltage from a tuning voltage generating circuit 9 based on the data of the present station. The circuit 4 detects the discontinuity of sound for a prescribed period, then the circuit 4 activates a muting circuit 10 via the CT section 5, gives the data of check station to the circuit 9 and the receiving data from the inspection station to the circuits 3, 4. When the receiving level of the inspection station is higher than that of the present station at the circuit 4, the broadcast data of the inspection station is received.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a receiver, and in particular, the present invention relates to a receiver that has an automatic channel selection function and receives broadcasts between the current station being received and other inspection stations simultaneously or in a time-division manner, and receives each broadcast content. The present invention relates to a receiver having a function of determining the identity or similarity of

Conventionally, various attempts have been made to automatically switch the receiving frequency in mobile receivers installed in cars, etc., in order to continuously receive programs from broadcasting stations with the same content while moving. . One method is to manually select a group of broadcast stations within a predetermined reception band. However, according to this method, any one of the broadcast stations can be stored in advance by manual operation. There is the annoyance of having to do it. Therefore, in order to save such manual operations, there is a method that includes a built-in ability to distinguish each broadcast content, and searches for stations broadcasting the same program as the broadcast station currently in progress. However, with this method, it takes time to search between tests that are broadcasting the same program as the current station, and switching may not always be smooth, or Even if the test with the same content is in the next area, there is a problem in that both stations may be in fringe area areas or intersect and do not exist, making it impossible to switch over.

Therefore, a primary object of the present invention is to provide a receiver that overcomes the two problems.

To summarize this invention, within a predetermined receiving band,
The broadcasting frequencies of A number of broadcasting stations are allocated, and the broadcasting between the current station being received and the other stations being tested is received simultaneously or in a time-sharing manner, and the sameness or similarity of the broadcasting content is determined. In the receiver to be discriminated, each broadcast frequency is provided with a memory for storing the data of the current station and a small number of data related to each current station, and Or depending on the difference between inspections of similar broadcast contents,
Assuming that the broadcast content between inspections is related to the broadcast content of the current station, a receiver configured to represent the inspection station and store the redata in the storage area corresponding to the current station. Uro.

Other objects and features of the above invention will become clearer from the detailed description given below with reference to the drawings.

FIG. 1 is a diagram of one embodiment of Hitoshi's invention, and FIG. 2 is an illustrative diagram showing data stored in the memory 7 included in FIG. 1.

First, the configuration of an embodiment of the present invention will be described with reference to FIG. The interface 1 is connected to the interface 1-)2,
The received signal is sent to the Chiko J25, and the tuner 2 tunes to each of the broadcasting frequencies of a plurality of broadcasting stations within a predetermined receiving band, and a part of the tuned signal is tuned to the level. ? +1 is given to constant circuit 3. Level judgment time! 83 detects the reception level of the received signal of the broadcast station tuned by the tuner 2 at a plurality of predetermined levels, and sends the detection signal to the control section 5. Further, a part of the demodulated output of the tuner 2 is applied to a demodulation level detection circuit 4.

The demodulation level detection circuit 4 detects a pause period when the demodulated audio signal is interrupted, for example, if the broadcast content is speech, and supplies a detection signal to the -]n 1 to [1] unit 5 during this period. . Furthermore, the harmonic output of the tuner 2 is given to a micoating circuit 10@(rshi'-U) low frequency amplifier 11. When the @car signal is not blocked by the muting circuit 10, the low frequency amplifier 11 amplifies the audio version 8 of A and outputs it to the speaker 1.
Give to 2.

The temporary storage area 6a includes an area 6a for storing reception frequency data of the current station and an area J for storing reception frequency data of the test layer.
and the rear 6b. The current station data in the temporary memory 6 is applied to a dew voltage generation circuit 9, and a 5 coning voltage is applied to the tube 2 to tune to the reception frequency of the current station.・. Buyuna 2 hazonobu'1--
It tunes to the reception frequency of the current station based on the tuning pressure. The tuning voltage generation circuit 9 can be traced to F)L, L
It is composed of a frequency synthesizer L.

Memo 1'7 includes a storage area corresponding to each of the reception frequencies allocated within a predetermined reception band, for example, 76 to 90MH2 in the case of FM broadcasting. That is, the reception band of FM tIi transmission is 76.0 to 90, OM t-(z d 0.1
~I) (If a frequency is assigned to each z, 1 rear for 141 stations will be assigned to 2 L rears and 1 for the current station). , 'E-1, so that the area of each current station can store nine stations' worth of receiving frequency data of the test layer related to each current station, and then) 1 for
One rear for 41 x 10 = 1410 stations is provided. So, the f-time of each broadcast frequency is stored as 8 bits (0 to 255).1 f, 1410x
8=1 '1280 pits 1~(b is sufficient.

Above this), the rear corresponds appropriately to the 71~res f-ta and the frequency data 1! In order to make it easier to understand, in this example, we assume <700000 to 714009 as shown in Fig. 2, and assume the reception band of FM broadcast2, and the data OOO is 76, OMH7
, y'-taOO1 is 76.1MHz, and so on,
For example, data 068 is 82.8MHz, data 10
5 is 86.5MHz, data 121 is 88.1MHz
, data 139 is 89.9MHz, data 140 is 90
．． Assigned to OMt-12.
00001 to 700009 has a reception frequency of 76.0
It is allocated to store the received frequency data of nine test layers associated with the current station in MHz. Also, l-doe is 706801 to 7068091J: 82, 8
MHZ for recording the received frequency data of the nine test layers associated with the current station of the MHZ.

Next, I will explain the operation. ,J,zu,tuning
Z: もJ-2nd cylinder゛9 pressure is generated. The tuner 2 receives the broadcast program of the current station at C1 by tuning to the reception frequency of the current station based on the tuning voltage supplied from the broadcasting voltage generating circuit 9. tuner 2
The received signal of the current station received by C is given to a level determination circuit 3, and the demodulated output is given to a demodulated level detection circuit 4. The level determination amount "?83 determines the received lZ.

The Nikon l~roll section 5 accumulates and averages the reception level signals, and stores them as the reception level of the current station. Also,
The demodulation level detection circuit 4 detects whether or not the demodulated output of the duno 2 is interrupted for a certain period of time, for example, a period of about several m5ec or several m5ec. When the demodulation 1 novel detection circuit 4 detects the interruption of the audio, the following series of operations are performed 1. In other words, the Ronto[]-role section 5 is converted into the MiCoating circuit 1.
A muting signal is given to speaker 1 to prevent noise from occurring.
Avoid interrupting the voice emitted from 2.

Next, the control unit 5 controls the area 6 of the temporary memory 6.
The data of the current station stored in area -C and the inspection station data stored in area 61) are exchanged.

Therefore, the inspection station data is given to the tuning voltage generating circuit 9, and the station 2 receives the broadcast of the inspection layer.

Then, the reception level of the test layer received by the tuner 2 is given to the level determination circuit 3, and the level is determined. 1 determined by the level determination circuit 3
The novel signal is given to controllers 1 to 5. If this level is below a predetermined level, the control unit 5 returns the inspection station data stored in the area 6a and the area 6b.
The current station data stored in is replaced. Therefore, tube 2 receives the broadcast program of the original current station. The control section 5 is connected to the muting circuit 1.
The muting signal that was applied to the area 6b is turned off, the audio interruption is canceled, and the inspection station data in area 6b is updated. That is, the frequency data between tests is incremented by 1 or more (or decremented by 1 or more) by the minimum inter-station space. These operations are performed within a period of several m5ec to several tens of m5ec, but since they occur at the moment when the audio is interrupted, they do not interfere with the broadcast reception of the current station.

When the moment when the audio is interrupted again occurs, the second control section 5 operates the muting circuit 10 in the same manner as described in (e) above.
A muting signal is given to the area 6, the audio is interrupted, and
The program of the broadcasting station corresponding to the inspection station data of b is received by teams 1-2. The reception level during this test is determined by the level determination circuit 3, and if the reception level is equal to or higher than a predetermined level, the broadcast program is determined as follows.

That is, the demodulation level detection circuit 4 gives the state of the demodulated output between the checks that are being received intermittently to the 'C control unit 5, and the state of the demodulated output between the checks that is being received is given to the C control unit 5, and the state of the demodulated output between the checks that is being received is given to the C control unit 5, and the state of the demodulated output between the checks that is being received is given to the 'C control section 5, and the state of the demodulated output between the checks that is being received is given to the 'C control section 5, and the state of the demodulated output between the checks that are being received is given to the 'C control section 5, and the state of the demodulated output between the checks that are being received is given to the C control section 5, and the broadcast program of the current station that was being received before the reception of the test interval is given. In the same way, it is checked in a short period of time whether or not there are gaps in the voice.

At this time, there will be a slight time delay between the current station and the inspection, but based on the expected value regarding audio interruptions in the following, if the audio is interrupted in the same way as the current station, it is possible that the broadcast content is the same. It is determined that there is. Then, in the same way as in the previous case when the level is below the predetermined level, the reception returns to the current station, but the inspection station data in area 6b remains as the updated data between inspections, and the next opportunity for audio interruption comes. Wait until. Then, at the next opportunity of audio interruption, the received program of the broadcasting station is checked again based on the checking station data in area 6b. This operation is repeated, and if the interruptions in the audio between the current station and the test are synchronously confirmed several to several times in succession, it is determined that the broadcast programs between the current station and the test are the same.

In this case, after detecting the synchronicity of the audio interruption, return to the current station, and when the audio rise of the current station is detected, instantly switch between tests and check the audio rises of each audio between the current station and the test. It would be even more effective if it could be checked instantaneously whether or not the two are synchronized.

In this way, if you serve between tests with the same content as the current station being received, if the reception level between the tests is higher than the reception level of the current station, it will automatically switch from the current station to the test. Broadcasting stations with the same content can be continuously received even beyond the service area of one broadcasting station. However, in this operation, when searching between tests, the broadcasting frequencies of multiple broadcasting stations within the receiving band are sequentially checked in step increments, so searching for the desired broadcasting station requires a large amount of storage space. Kazuru. However, in this embodiment, the memory 7 is provided with a storage area corresponding to the number of broadcast stations existing within a predetermined reception band, and the reception data between inspections is stored in relation to the frequency data of each broadcast station. This allows us to serve the target test in a short period of time.

That is, in the initial state, nothing is stored in each area of the memory 7. ■If a search is made for the same broadcast program as the current station based on the current station data stored in the rear 6a, data related to the current station is stored in the area of the memory 7 corresponding to the current station. Data between tests is stored. For example, 82.8M
Broadcasting station based on H2 (data 068) and 88.1MH2
(Based on data 121) and 86.5M)-
If the broadcasting stations based on 1z (data 105) are each broadcasting the same program, there are currently 8 stations.
While driving while receiving 2.8M1-1z, if an 88.1MHz broadcasting station is received during the test and the reception level is higher than the current station, the detection related to the current 82.8MHz station will be detected. Frequency data of 88.1 MH2 and frequency data of 86°5 M +-]Z are stored as a station. This situation is illustrated in FIG. That is, 82.8M + - I Z's 1/'706801 to 8
Data 121 representing 8.1 MHz is stored, 86.
1 data 121 representing 88.1 MHz is stored in rear 710501 of 5M to IZ, J data 068 representing 82.8 to I Hz is stored in area 712101 of 88.1 MH2, and J data 068 representing 88.1 MHz is stored in area 712102. 86.5M
Data 105 representing Hz is stored. When the data between inspections related to the current station is stored in the memory 7 in this way, it is possible to switch very smoothly when traveling on the same course or when retracing the same course.

In addition, in the embodiment of Sat) E, a search interval is searched for which is broadcasting the same program as the current station, and the data between the inspections is sent to the current station on PA3! ! Although the f-date between inspections related to the current station can be manually set and stored in the C memory 7.

Next, such an embodiment will be described. 21 The control section 5 is provided with an operation section 8. This operation unit 8 includes a memory standby switch 81, an automatic channel selection switch 82,
A switch 83 and a content check omission designation switch 84 are installed in the memory cell 1. The operating section 8 provided with these switches is operated as follows. A. In other words, when the next area is reached from the area where the car equipped with the reception type is, the data of the current station being received at the point in time (B) can be retrieved by operating the switch 81. is stored in the current station area of memory 7.

Next, operate the switch 82 to select the desired broadcasting station, and when it is served, turn the switch 83 to 11.

At this time, if you operate the switch 84 to specify the content check omission, even if the program between the current station stored in the memory 7 and the newly searched test is not the same, the data between the tests stored in the memory 7 ) In this connection, a specific Hira l~ is set. After that, the standby state is released. In order to store the data between desired tests in the memory 7 by operating the operating section E3 in this manner, the second control section 5 is constituted by, for example, a microcoater, and each switch of the operating section 8 is operated. It is relatively easy to prepare a program to perform the above-mentioned operation based on the command (1).The operation of the operation section 8 is a little similar, but if you operate it for the first time, it will be the same. When driving on a course of Even if there is no broadcast station available, you can automatically switch to your favorite broadcast station.

By the way, regarding the judgment of the current station and the same program being broadcast, the following was found as a result of statistical measurements of the sound and sound of the broadcast. However, from the time when the audio interruption is detected for a certain period of time, it is further followed by (regarding the duration of audio interruption, if the period of audio interruption detected before C1 is long,
This means that the expected value of the time it will take for C' to continue after that will become longer. For example, given an example of experimental values,
When an audio interruption of 85m sec is detected, the probability that the audio interruption will continue after that is approximately 1
There was 0n sec r, and when the audio interruption of 200m5ec was detected, it was 35m5ec.

Judgments about broadcast content are made based on such probabilistic facts, but what about the times when the audio output of the broadcast is available and when it is not? Even if it is half V minutes, if the audio interruption occurs at the same time n times consecutively, the probability that it is different broadcast content is (1/2)" 2 degrees. For example, if 0 = 10, It is 0.1% or less.

In addition, in the -[) small embodiment, one Buyuna 2 is installed in the receiver.
For example, if two tubes were installed, one tuner would receive the broadcast program of the current station, and the other tuner would detect the broadcast program between the current station and the test. It may also be possible to receive broadcast programs and determine the identity or similarity of their respective contents.If two or more tuners are provided in this way,
There is no need to time-divisionally receive signals between the current station and the inspection station. .

In addition, if the content of the broadcast program is specified by the pylon L-signal, etc., without currently determining the content between station inspections, it is possible to eliminate the need to determine the content by simply identifying the pilot Shintan. can. Also, exactly the same
In regions where a plurality of broadcasting stations do not broadcast the program, it is possible to sequentially receive broadcasting stations that are similar in broadcast content, for example, only broadcast music.

Furthermore, if the memory 7 is configured with a non-volatile memory, its contents will not be erased even if the power is turned off. Furthermore, if the memory 7 is made replaceable, it is possible to receive desired broadcasts depending on the region where the vehicle is traveling.

As described above, according to the present invention, data between tests that are the same as or similar to the content of each broadcast station are stored for each broadcast frequency within a predetermined reception band, so that the current station If you memorize the relevant test intervals, you can receive the desired broadcast program while eliminating the need to change between tests.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a practical example of the present invention. FIG. +15 Also, 2 is y-up, 3 is level gain circuit, 4 is demodulation 1. novel detection circuit, 5 is con l-Fil-
6 and 7 are memories, 8 is an operation section, 9 is J-di m=
. Figure 2 shows a voltage photogenerating circuit. Agent Den Kuzuno - (1 other person)

Claims (6)

[Claims] (1) The broadcasting frequencies of multiple broadcasting stations are allocated within a predetermined reception band, and the broadcasting frequency from each broadcasting station includes a tuner that performs the same vXA''g, and the current station being received and other inspection stations are Reception in which broadcasts are received simultaneously or in a time-division manner and the identity or similarity of each broadcast content is determined. and a storage means provided with a storage area for storing a plurality of data related to each current station, and in response to determining an inspection station that is the same as or similar to the current station based on the output of the tuner. , comprising means for storing data representing the inspection station in the current station (2) corresponding 8 self-storage area of the storage means, assuming that the broadcast content of the inspection station is related to the content sent by the inspection station. It features a JJ receiver. (2) Roughly speaking, means for causing the tuner to receive the broadcast of the inspection station based on the data representing the inspection station stored in the storage area corresponding to the current station of the storage means; a comparison means for comparing reception conditions of the broadcast content of the current station and the inspection station based on the current station; 2. The receiver according to claim 1, further comprising means for continuously receiving broadcasts from the inspection station. (3) The patent further includes manual setting means for manually setting and storing data representing an inspection station that is the same as or similar to each current station in a storage area corresponding to each current station of the storage means. The number of receptions described in claim 1. (4) A storage area for storing data related to each current station of the storage means is provided with a storage area for setting specific pins 1 to 1, and further includes a storage area for setting specific pins 1 to 1, and a storage area for setting specific pins 1 to 1, and a storage area for storing data related to each current station. a command means for giving a command to omit and override the similarity determination, and in response to the command means being operated and the manual setting means setting Y-Y representing an inspection interval that is the same as or similar to the current station. , means for setting the specific bit [-] in a data storage area of the storage means to represent the inspection station concerned, and a) means for setting the specific bit in the storage means; 4. The receiver according to claim 3, further comprising means for causing the tuner to receive the broadcast of the inspection station if the reception condition is better than that of the current station. (5) The receiver according to any one of claims 1 to 4, wherein the storage means is constituted by a nonvolatile memory. (6) The receiver according to any one of claims 1 to 5, wherein the storage means is configured to be replaceable.