KR19990027197U - Tuning device according to time of car radio - Google Patents

Abstract

The present invention relates to a tuning device according to the time of the car radio that can receive the channel of the broadcasting station corresponding to the specific time of the car radio, the power supply unit 11 for supplying power to the radio (16) And a timer 12 for generating a clock signal in accordance with the already stored time, a memory unit 13 storing a reception frequency for a broadcasting station corresponding to each address in correspondence with each broadcasting station, and the timer 12. A controller 14 for inputting a clock signal and outputting a signal of a received frequency stored in the memory 13 in accordance with the clock signal of the timer 12, and tuning in accordance with a control signal output from the controller 14. And a radio frequency 16 for receiving the channel of the broadcasting station by the apparatus 15 and the broadcasting station 15 so as to detect a specific time by the timer 12 and then broadcast frequency corresponding to the time. There is that by loading the station from the channel memory 13 to place already stored by channel selection to the radio operator to the safety manually operated by eopeojim need to tune by pressing the boteon effect.

Description

AUTO-TUNING DEVICE TO A RADIO PROGRAM FOR A CAR

The present invention relates to a car radio, and more particularly to a tuning device according to the time of the car radio that can receive the channel of the broadcasting station corresponding to the specific time of the car radio.

In general, radios used in automobiles should be mechanical vibration resistant, compact, lightweight and highly sensitive. Currently used car radio does not need AC power, it is a transistor type that operates at the same time when the switch is closed, it has low power consumption, small size and light weight and has the following advantages over home radio.

First, all the electric equipment installed in the car is powered by the battery installed in the car, and the car radio must also use this battery as the power source. Therefore, in the case of using a vacuum tube type, an inefficient current supply was performed by using a vibrator for converting a battery voltage into an alternating voltage.

Secondly, since the battery of a car is always charged by the charging device while driving, the charging voltage also changes according to the change of engine speed, and varies from 1.8 to 2.6V per cell and 10.8 to 15.6V in a 12V vehicle. . Therefore, car radios are designed to operate sufficiently stable against such voltage fluctuations.

Third, in a car radio, the reception electric field is always variable. Therefore, the sensitivity and AGC of the receiver should be supplemented from the low field (40 dB, 0.1 mV / m) to the strong electric field (80 dB, 10 mV / m or more) just below the transmission tower. . For this reason, high frequency amplification circuits are installed in automobile radios.

Fourth, since driving is often performed while driving a car radio, it is easy to misoperate when it becomes difficult to operate. Therefore, tuning operation is simplified by using a push-button, and a push type is also used for a power switch.

Fifth, the automobile has a strong noise source such as a high-voltage generator circuit, a generator, and the noise is strongly radiated inside and outside the car. In addition, because of the noise in the street noise, high-voltage line, and various noises radiated from other cars, car radios are equipped with noise suppression circuits or noise suppressors so as not to interfere with such noise. That is, the input noise suppression circuit, the output noise suppression circuit, and the like, and the radio is packed in a metal case.

Sixth, the temperature and humidity environment of a car interior is more severe than that of a normal living room, not to mention the interior of a normal living room. If you park your car outside the house in winter, it will be below -20 ℃, and if you close the window in midsummer, it will be above 55 ℃. Humidity also increases significantly during the rainy season and after rain. Therefore, car radios are considered by design because they must not cause breakage of transistors, changes in frequency and general characteristics even under such circumstances.

Seventh, because the outside noise is surprisingly large in the city area and the magnetic noise such as the engine, the transmission, and the driving axle is heard, the sound must be sufficiently audible in these noises, that is, the output of 1.5 to 3.5W conduction. In addition, in the sound quality, the sound of the lower region, that is, the softer sound, is required because the sound of the higher region is rather unpleasant because the sound of the higher region is listened to in the noise within the narrow disturbance.

Eighth, dust and the like enter the ventilator in the cabin. Therefore, it is designed so that such dust does not cause malfunctions such as poor contact of the switch, desensitization, and speaker ringing.

Finally, since the automobile radio is installed in the vehicle in a state of being in close contact with the vehicle, various vibrations of the vehicle, that is, vibrations or shocks such as road shocks and engine rotation vibrations, are directly applied to the radios. Therefore, it is firmly made so that the tuning is not misaligned or the parts are dropped or damaged. The μ tuner is used in all automotive radios and the printing type is mainly used to improve vibration resistance.

1 is a configuration diagram for explaining the operation principle of the tuning apparatus according to the time of a conventional car radio designed to satisfy the above conditions, the power supply unit 1 for supplying power to the radio 6, And a tuning device 5 for selecting a channel of the radio 6 by the driver's tuning input.

When the driver wants to listen to the radio while driving, it is possible to press the frequency up and frequency down keys of the tuning device 5 provided on one side of the front panel.

As a device more advanced than the above-described radio tuning device, it is realized by calling the tuning channel from the memory already stored according to the selected button by one-touch selection of the button by using the memory storing the tuning channel of each broadcasting station. .

However, the above process also gives the driver a hesitation about which broadcast to select at a particular time, and inconvenient to wait until the time is approaching to tune in to a radio broadcast at a specific time. By disturbing the driver's psychology, there is a problem that causes a problem of safe driving.

Accordingly, the present invention is to solve the above-described conventional problems, and if the driver turns on the radio in advance in a memory to listen to the broadcast to be listened at a specific time, it can be tuned according to the channel stored for a specific time. It is an object of the present invention to provide a tuning device over time for a car radio.

1 is a block diagram for explaining the operation principle of a general car radio.

Figure 2 is a block diagram of a station selection device over time of a radio for a car according to the present invention.

<Description of the reference numerals for the main parts of the drawings>

11 power supply 12 timer

13 memory 14 controller

15: Tuning device 16: Radio

Tuning device according to the time of the automotive radio of the present invention for achieving the above object is a power supply unit 11 for supplying power to the radio 16, and a timer 12 for generating a clock signal in accordance with the already stored time ), A memory unit 13 storing a reception frequency for a broadcasting station corresponding to each address in correspondence with each broadcasting station, and a clock signal of the timer 12 as an input and according to the clock signal of the timer 12. A controller 14 for outputting a signal of a reception frequency stored in the memory 13, a tuning device 15 for tuning in accordance with a control signal output from the controller 14, and a corresponding broadcasting station by the tuning device 15; The radio 16 consists of receiving a channel.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the tuning device according to the time of the car radio according to the present invention in detail as follows.

2 is a block diagram of a tuning device according to the time of a car radio according to the present invention, a power supply unit 11 for supplying power to the radio 16, and a timer 12 for generating a clock signal according to a previously stored time. ), A memory unit 13 storing a reception frequency for a broadcasting station corresponding to each address in correspondence with each broadcasting station, and a clock signal of the timer 12 as an input and according to the clock signal of the timer 12. A controller 14 for outputting a signal of a reception frequency stored in the memory 13, a tuning device 15 for tuning in accordance with a control signal output from the controller 14, and a corresponding broadcasting station by the tuning device 15; The radio 16 consists of receiving a channel.

If described in detail the operation principle of the tuning device according to the time of the car radio according to the present invention configured as described above.

When the driver turns on to watch the radio after boarding, the controller 14 receives the current time from the timer 12. According to the time input from the timer 12, the frequency signal of the channel stored in the memory 13 is output to the tuning device 15, and the tuning device 15 is output according to the control signal output from the controller 14. By applying the corresponding tuning signal to the radio 16, the radio 16 receives a specific channel for a specific time.

More specifically, for example, if the driver wants to listen to traffic broadcasting at 8 o'clock, listen to cultural broadcasting at 9 o'clock, and listen to Seoul broadcasting at 11 o'clock, and then listen to cultural broadcasting at 12 o'clock. In (13), the reception frequency for each broadcast is stored. That is, for example, the first address of the memory 13 stores the traffic broadcasting, the second address of the memory 13 stores the cultural broadcasting, and the third address of the memory 13 stores the Seoul broadcasting. Let it be. Of course, the rest of the bungee remembers the corresponding broadcast. The timer 12 outputs a clock signal at a specific time. That is, the clock signal is outputted at 8 o'clock, and the clock signal is outputted at 9, 11 and 12 o'clock.

When the driver turns on the radio for the already set time and reception frequency, the clock signal output from the timer 12 is input to the controller 14 when the driver turns on the radio. Data for the first address corresponding to 8 o'clock is loaded, and the control signal corresponding thereto is transmitted to the tuning device 15. The tuning device 15 receives the traffic broadcast by causing the radio 16 to tune in response to a control signal output from the controller 14. After some time has passed, the clock signal output from the timer 12 is input to the controller 14, and the controller detects that it is 9 o'clock, and the second address corresponding to 9 o'clock from the memory 13 is detected. It loads the data for and transmits the control signal accordingly to the tuning device 15. The tuning device 15 receives the cultural broadcast by causing the radio 16 to tune in response to a control signal output from the controller 14. After some time has passed, the clock signal output from the timer 12 is input to the controller 14, and the controller detects that it is 11 o'clock, and then the second address corresponding to 11 o'clock from the memory 13 is detected. It loads the data for and transmits the control signal accordingly to the tuning device 15. The tuning device 15 receives the Seoul broadcast by causing the radio 16 to tune in response to a control signal output from the controller 14.

When the driver turns on the radio after 8 o'clock, the controller 14 receives the current time from the timer 12 and loads the data of the address stored in the memory 13 according to the current time. For example, assuming that the current time is 10:30, the controller 14 determines which address of the memory 13 corresponds to 10:30 and loads data of the corresponding address.

In this embodiment, the reception frequency stored for each broadcasting station is loaded and tuned for a specific time, but the present invention is not limited thereto. That is, when the driver assumes that the English conversation of the cassette is to be listened to in the morning, first, the cassette is operated to allow the English conversation to be listened to, and then the specific broadcast of the radio can be received again at a certain time.

As described above, according to the present invention, after detecting a specific time by a timer, the driver needs to press the button one by one by loading the corresponding station channel from the memory that has already stored the broadcasting frequency corresponding to the time and tuning the radio. There is an effect that can prevent the accident to happen in advance by driving safely by disappearing.

In addition, since the corresponding broadcast channel is made without a button manipulation for a specific time, the driver can hear the desired broadcast accurately at a desired time.

Claims (1)

A power supply unit 11 for supplying power to the radio 16; A timer 12 for generating a clock signal according to the time already stored; A memory unit 13 storing a reception frequency for a broadcasting station corresponding to each address in correspondence with each broadcasting station, A controller 14 which inputs a clock signal of the timer 12 and outputs a signal of a reception frequency stored in the memory 13 according to the clock signal of the timer 12; Tuning device 15 for tuning in accordance with the control signal output from the controller 14, And a radio station for receiving a channel of a corresponding broadcasting station by the station apparatus.