JPH0983306A - Automatic memory device for receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store the different broadcast stations in every operation of an automatic memory when the number of receivable stations is larger than the number of channels of a storage means by starting the sweep at the frequency of a prescribed channel that is read out of the storage means in response to the operation of the automatic memory. SOLUTION: A detection means detects the stations higher than a prescribed level out of the swept stations. A control part 10 calls the receiving frequency of a prescribed channel out of a storage means 10b to set the called frequency at the sweep start frequency in response to the command of an automatic memory given via an operation means 12b which gives commands to the automatic memory. At the same time, the part 10 instructs a sweep means to start the sweep of frequency and also stores in sequence the stations detected by the detection means into the means 10b. Then it is decided whether all store areas corresponding to the prescribed channel are written or whether a prescribed range of frequency is swept. Based on this decision result, the sweep of frequency is discontinued. Thus the operation of the automatic memory ends.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver of a television, a radio or the like, which sweeps a reception frequency based on a predetermined operation and sequentially stores the frequency data in a memory when a broadcasting station is detected. The present invention relates to an automatic memory device.

[0002]

2. Description of the Related Art Conventionally, an automatic memory device of a receiver sets a sweep start frequency to the lowest frequency of a reception frequency band when an automatic memory is designated as shown in Japanese Patent Publication No. 60-34856 and sweeps from there. The mainstream is the one that changes to the rising direction and sequentially stores the frequencies when a station is detected, and ends the operation when writing to all channels of the prepared memory or when the sweep reaches the maximum frequency. It was

[0003]

The above method is very effective when the number of broadcasting stations capable of receiving in the receiving frequency band is smaller than the number of prepared memory channels, but the number of receiving stations is very large. In the region (country), all the memory writing is completed at the time when a small fraction of the reception band is swept, and the written broadcasting station often does not match the user's preference. In this case, the automatic memory device of the above method starts from the lowest frequency of the sweep start frequency reception band no matter how many times the automatic memory is instructed, so that the broadcast station stored in the memory does not change and the user can continue forever. It did not match the taste of, and there was a situation in which the memory was manually written without stopping. On the other hand, since the automatic memory device repeats the frequency sweep and the memory write operation many times, it takes time from the start to the end of the operation, and the user is kept waiting during that time. In the past, it was of course impossible to know the progress of the automatic memory operation during the waiting time of the automatic memory.

Therefore, the present invention has been made in view of the above-mentioned problems of the prior art. The first object of the present invention is that, even if the automatic memory is repeatedly operated in a region where the number of receiving stations is small, the broadcasting station can store the memory in almost the same manner every time. In an area with a large number of receiving stations, a broadcasting station stored for each operation of the automatic memory is automatically stored differently, and a second object is to provide an automatic memory device for the receiver. It is to provide an automatic memory device for a recognizable receiver.

[0005]

In order to solve the above-mentioned problems, the automatic memory device according to the invention of claim 1 has a predetermined level or more among sweep means for sweeping a predetermined frequency band and stations swept by the sweep means. Detecting means for detecting a station, an operating means for instructing an automatic memory, a channel selecting means composed of a plurality of channels, and a storage means which can be called by the channel selecting means and has a storage area corresponding to the plurality of channels. According to the automatic memory command from the operating means, the reception frequency of a predetermined channel of the storage means is set to the calling sweep start frequency, and the sweep means is instructed to start the frequency sweep and detected by the station detecting means. Stored stations are sequentially stored in the storage means, and the storage areas corresponding to the channels are all written, or the frequency sweep is within a predetermined range. It determines whether the sweep, and a control unit for terminating the automatic memory by stopping the frequency sweep on the basis of this determination, further comprising a as the first aspect.

An automatic memory device according to a second aspect of the present invention includes a sweeping means for sweeping a predetermined frequency band, a detecting means for detecting a station having a predetermined level or more among stations swept by the sweeping means, and an automatic memory. Operating means for instructing, channel selecting means composed of a plurality of channels, storage means callable by the channel selecting means and having a storage area corresponding to the plurality of channels, and a display section capable of displaying the channel number. In response to an automatic memory command from the operating means, the receiving frequency of a predetermined channel of the storage means is set to the calling sweep start frequency, and the sweep means is instructed to start the frequency sweep, and the detecting means controls the station. Set the channel to write the frequency to when detected, and identify the channel to write the next frequency on the display based on this setting. When the station detecting means detects a station, the frequency is stored in the set channel and the setting of the channel is changed to the next channel so that all the storage areas corresponding to the channel are written, or Determine whether the frequency sweep has swept the specified range,
A second gist is that a control unit that terminates the automatic memory by stopping the frequency sweep based on this determination is provided.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The embodiment of the invention of claim 1 is as follows.
As shown in FIGS. 1 and 2, sweeping means (S4), (S5), (S6), (S7), (S) for sweeping a predetermined frequency band.
8), a detecting means (S8) for detecting a station having a predetermined level or higher among the stations swept by the sweeping means, an operating means 12b for instructing an automatic memory, and a tuning means 12a composed of a plurality of channels. , A storage means 10b which can be called by the channel selection means and has a storage area corresponding to the plurality of channels, and a reception frequency of a predetermined channel of the storage means is called in response to an automatic memory command from the operation means, and sweeping is started. The frequency is set (S3) and the start of frequency sweep is instructed to the sweep means (S4), and the stations detected by the station detecting means are sequentially stored in the storage means (S10) to correspond to the channel. It is determined whether the entire storage area has been written (S12) or whether the frequency sweep has swept the predetermined range (S14), and based on this determination, the circumference is determined. By stopping the several sweeps, comprising a control unit 10 to terminate the automatic memory. As a result, the frequency of the predetermined channel of the storage means is read out in accordance with the automatic memory operation, and the sweep is started from that frequency, so that when the number of receivable stations exceeds the number of channels of the storage means, the automatic memory operates Can store different stations.

According to the second embodiment of the invention, the sweeping means (S4), (S5), which sweeps a predetermined frequency band,
(S6), (S7), (S8), a detecting means (S8) for detecting a station having a predetermined level or higher among the stations swept by the sweeping means, and an operating means 12 for instructing an automatic memory.
b, a channel selection unit 12a including a plurality of channels, a storage unit 10b that can be called by the channel selection unit and has a storage area corresponding to the plurality of channels, and a display unit 11 that can display the channel number. In response to an automatic memory command from the operating means, the reception frequency of a predetermined channel of the storage means is set to the calling sweep start frequency (S3), and the sweep means is commanded to start frequency sweep (S4). A channel is set to write a frequency when the detecting means detects a station (S2), (S2)
11) Based on this setting, the channel on which the frequency is to be written next is identified and displayed on the display section (S2), (S1).
3) When the station detecting means detects a station, the frequency is stored in the set channel (S10) and
Change the setting of the above channel to the next channel (S1
1), it is determined whether all the storage areas corresponding to the above channels have been written (S12) or whether the frequency sweep has swept a predetermined range (S14), and based on this determination, the frequency sweep is stopped to automatically store the memory. And a control unit for terminating the. As a result, when the receivable station is detected, the channels of the storage means to be stored next are sequentially displayed, so that the progress of the automatic memory can be recognized by the display.

[0009]

EXAMPLES Examples of the present invention shown in FIGS. 1 to 5 will be described below. 1 is a block diagram of an electronic tuning radio receiver embodying a receiver according to the present invention, FIG. 2 is a flowchart showing processing of an automatic memory of the radio receiver according to the present invention, and FIG. 3 is an initial state of a memory of the receiver. FIG. 4 and FIG. 4 to FIG. 5 are diagrams showing an example of the state of the memory after the automatic memory operation.

In FIG. 1, the signal input from the antenna is amplified by the front end 1. That is, the front end 1 has a high frequency amplification section and a mixer section, and the high frequency amplification section amplifies the high frequency signal of the desired broadcasting station tuned. Then, this amplified signal is converted into an intermediate frequency of a constant frequency by the mixer section. In this frequency conversion, it is necessary to change the reception frequency and the local oscillation frequency while keeping a constant frequency difference. That is, the high frequency signal that has passed through the high frequency amplification section and the local oscillation signal injected at an appropriate level are combined in the mixer section. This local oscillation signal is controlled by the PLL circuit 2 that digitally controls the local oscillation frequency. Since the local oscillation signal is changed in a certain step, the reception frequency is changed. Then, the intermediate frequency output from the mixer is further amplified by the IF amplifier 3 by selecting only the intermediate frequency. The intermediate frequency output from the IF amplifier 3 is restored to the original audio signal by the FM demodulation circuit 4, and sound is output from the speaker 7 via the amplifier 6.

On the other hand, the output from the IF amplifier 3 is input to the level detection section 8, the level detection section 8 detects the level, the A / D 9 converts the analog signal into a digital signal, and the converted signal is input to the memory built-in CPU 10. , CPU1
If the signal is equal to or higher than a predetermined level, 0 determines that there is a broadcasting station.

Reference numeral 11 denotes a display, which displays, for example, the reception frequency and the channel number of the preset memory section 10a based on each signal processed by the CPU 10. Again 12
Is an operation unit, and here are six preset keys 12a, an automatic memory key 12b, an up key 12c, and a down key 12.
Keys such as d are arranged.

Incidentally, NO. 1-NO. The preset key 12a of No. 6 corresponds to the preset channel of the preset memory 10b, and in the memory system of the present invention, NO. 1
~ NO. The frequencies are sequentially memorized up to 6, and when each preset key is operated, each memorized reception frequency is brought into a called reception state.

The CPU 10 executes the processing as shown in FIG. That is, when the automatic memory key 12b is operated (S1), the preset channel number is set to 1, and the number display (for example, CH1) corresponding to this set number is displayed on the display 11 (S2).

Next, the frequency of preset channel number 6 in the preset memory 10b is read out, the receiver is tuned to this frequency, and this frequency is stored as the sweep start frequency (S3). Incidentally, FIG. 3 shows the initial state of the preset memory in the initial state when power is supplied to the receiver for the first time. At the first automatic memory operation, the preset channel number 6 is 76.0.
MHz is read from the preset memory 10b and received.

And this preset channel number 6
The frequency is started to increase step by step from the frequency of (S
4) Each time, it is checked whether or not the upper limit of the band is reached (S5), and if not reached, the received frequency is returned to the lower limit of the band as it is (S6), and the sweep start frequency stored in (S3) is matched. It is checked whether to do (S
7).

If they do not match, it is checked whether the broadcasting station is detected by the signal from the A / D 9 (S8). If not detected, the process returns to S4 and the frequency is stepped up again by one step. In the case of a match in S7, if it is the first match, the station detection determination is similarly performed in S8, and if it is the second match,
That is, it is determined that the sweep of the predetermined range has ended (S14), and when the sweep of the predetermined range has ended, the channel number display on the display is turned off (S9) and the process ends.

Returning to S8, if a broadcasting station is detected in S8, the frequency data at that time is written in the channel of the preset memory 10b corresponding to the current channel number (S10). Then, add 1 to the preset channel number setting at that time, for example, preset channel number 1
When the frequency is written in, the channel number setting is set to 2 (S11).

It is checked whether or not the new channel number value is 7, that is, whether the writing of all preset preset channels has been completed (S12). If the writing of all the preset channels has not been completed, this new set channel number is checked. Is displayed on the display 11 (S13), and the process returns to S4 to increase the frequency by one step. On the contrary, when all the writing is completed in S12, the operation is completed in S9.

Therefore, a case in which the processing of the automatic memory is repeated a plurality of times after the initial state of the preset memory of FIG. 3 will be described with reference to the preset memory state examples of FIGS. 4 and 5.

First, when the automatic memory processing is executed from the initial state of FIG. 3, the sweep is started from the frequency of the preset channel number 6 of FIG. 3, and the display 11 displays CH: 1. Then, when a station is detected at 76.3, the number 1 becomes 7
Memorize 6.3 and display CH: 2 this time. In this way, each time a sweep is performed and a station is detected, the frequency is stored in the next channel number and the channel number display is changed one by one. When all the channels are stored, the process ends. Therefore, the progress status of the automatic memory can be grasped by looking at the channel number display in the automatic memory.

Now, in the above automatic memory processing, for example, as shown in FIG.
It is assumed that the broadcasting station is stored up to 82.5 MHz of z to channel number 6. Then, assuming that the automatic memory is started again subsequently, this time, the sweep is started from 82.5 of the preset channel number 6 of FIG. 4, and the preset channel number different from that of the station by the first automatic memory is displayed as shown in FIG. 83.0 MHz of 1 to 87.7 of No. 6
The station of MHz will be stored.

[0023]

As described above, according to the first aspect of the present invention, the frequency of the predetermined channel of the storage means is read out in accordance with the automatic memory operation, and the sweep is started from the frequency, so that the receivable station has the number of channels of the storage means. If the above exists, a different broadcasting station can be stored each time the automatic memory operates.
According to the second aspect of the invention, when the receivable station is detected, the channels of the storage means to be stored next are sequentially displayed, so that the progress of the automatic memory can be recognized by the display.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic tuning radio receiver embodying a receiver according to the present invention.

FIG. 2 is a flowchart showing a process of an automatic memory of the radio receiver according to the present invention.

FIG. 3 is a diagram showing an initial state of a memory of a receiver.

FIG. 4 is a diagram showing an example of a memory state after an automatic memory operation.

FIG. 5 is a diagram showing another example of the state of the memory after the automatic memory operation.

[Explanation of symbols]

 1 Front End 2 PLL Circuit 3 IF Amplifier 8 Level Detecting Unit 9 A / D 10 Memory Built-in CPU 10a ROM 10b RAM 11 Display 12 Operation Unit 12a Preset Key 12b Automatic Memory (AM) Key

Front page continuation (72) Inventor Fumio Oda 5-35-2 Hakusan, Bunkyo-ku, Tokyo Clarion Co., Ltd. (72) Masato Yamamoto 5-35-2 Shirayama, Bunkyo-ku, Tokyo Clarion Co., Ltd. (72) Inventor Yutaka Kondo 5-35-2, Shirayama, Bunkyo-ku, Tokyo Clarion Co., Ltd. (72) Inventor Yuji Nozawa 5-35-2, Shirayama, Bunkyo-ku, Tokyo Clarion Co., Ltd. (72) Invention Iwa Kazuhiro Clarion Co., Ltd., 5 35-2, Hakusan, Bunkyo-ku, Tokyo (72) Inventor Kazuhiko Uda Clarion Co., Ltd., 5-35-2, Shiroyama, Bunkyo-ku, Tokyo (72) Inventor Kenichi Ozawa Tokyo 5-35-2 Hakusan, Bunkyo-ku, Tokyo Clarion Co., Ltd.

Claims (2)

[Claims] 1. A sweeping means for sweeping a predetermined frequency band, a detecting means for detecting a station having a predetermined level or higher among stations swept by the sweeping means, an operating means for instructing an automatic memory, and a plurality of channels. Channel selection means, storage means that can be called by the channel selection means and has a storage area corresponding to the plurality of channels, and reception of a predetermined channel of the storage means in response to an automatic memory command from the operation means. The frequency is set to the calling sweep start frequency, and the sweep means is instructed to start the frequency sweep, and the stations detected by the station detection means are sequentially stored in the storage means, and the storage areas corresponding to the channels are all stored. It is determined whether the data has been written or the frequency sweep has swept within a predetermined range, and the frequency sweep is stopped based on this determination Automatic memory device of a receiver characterized by comprising a control unit to terminate the memory. 2. A sweeping means for sweeping a predetermined frequency band, a detecting means for detecting a station having a predetermined level or higher among stations swept by the sweeping means, an operating means for instructing an automatic memory, and a plurality of channels. Channel selection means, storage means callable by the channel selection means and having a storage area corresponding to the plurality of channels, a display section capable of displaying the channel number, and an automatic memory command by the operation means. Accordingly, the reception frequency of the predetermined channel of the storage means is set to the calling sweep start frequency, and the sweep means is instructed to start the frequency sweep, and the channel to which the frequency is written when the detecting means detects a station is set. Then, based on this setting, when the channel to write the next frequency is identified and displayed on the display unit, and the station detecting means detects a station, Stores the frequency in the above set channel and changes the setting of the above channel to the next channel, and judges whether the storage area corresponding to the above channel is all written or whether the frequency sweep has swept the predetermined range. An automatic memory device for a receiver, comprising: a controller that terminates the automatic memory by stopping the frequency sweep based on this determination.