JPS6257133B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic receiving device that can automatically receive specific programs such as radio and television programs that are repeatedly broadcast every hour, every day, and every week.

Conventionally, when a person wants to receive a specific program such as on radio or television, the person who wants to receive the specific program has to know in advance the broadcasting station and time on which the program will be broadcast by other means, such as a newspaper, etc. It is customary to do so. Recently, electronically controlled electronically tuned receivers have become popular, so it has become possible for receivers to know the broadcast station and time in advance and set the correct time on the receiver. However, these conventional reception methods basically:
This is extremely troublesome because the receiver must know the program, broadcasting station, and time in advance through other information media, and then set the program on the receiver each time based on this information.

The present invention provides for programs that are repeatedly broadcast.
Focusing on the fact that a program is introduced by the same sound, such as a theme music, introductory announcement, or the same image, such as a theme image, for a certain period of time after the start of the program, it is possible to automatically receive a specific program based on this. It is something.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, for example, an audio signal output from a receiving section 1 such as a radio to which an antenna 9 is connected is guided to a switch SW2 through an encoding circuit 3. In the illustrated state, the switch SW2 is in communication with b, and the encoded signal for a certain period is stored and fixed in the digital storage circuit (for example, a shift register) 7. The signals stored here are program introduction signals, such as program theme music, which are to be received again in the future.

Next, when the receiver contacts SW2 to a, the receiver enters a standby state and the output signal of the encoding circuit 3 is guided to the shift register 4. In this standby state, if the receiver receives a program starting with the same theme music as that stored in the digital storage circuit 7, the parallel output of the shift register 4 and the parallel output of the digital storage circuit 7 will match. , this matching state is detected by the comparison circuit 5. If both match as a result, switch SW1
is closed, the output signal of the receiving section 1 reaches the output terminal 10 through the amplifier 2, and program reception is started.

Clock generator 8 is used to save power consumption. In Figure 1, terminals B1, B2, B3, B4, B5, B6, B connected to SW3
7 are all connected as a pair to terminals with the same symbol of each block. In this case, if the recipient knows the start time of the program in advance and sets the time on the clock, the switch SW3 will be closed and the device will be powered on before the program starts. however,
As shown in the figure, power is constantly supplied to the clock generator 8 and the memory circuit 7, which is a type of memory circuit that is erased if power is not supplied.

Next, the encoding circuit 3 will be described. Generally, if there is a one-to-one correspondence between the input analog signal and the output digital signal, no matter what kind of conversion is performed, it is sufficient that the same conversion is performed for the two states a and b in the switch SW2. Digital conversion such as PCM (pulse code modulation) or delta modulation may be performed for a certain period of time, and the digitized data may be stored in the storage circuit 7. Alternatively, it is also possible to extract the envelope of the input signal and encode it. Depending on the case, the encoding may simply be a zero level or an "H" state if the signal is larger than the average level of the signal, and an "L" state if it is smaller.

Another possible method is to vary this reference signal over time. An explanatory diagram of the above is shown in FIG.

is a signal to be encoded, is an average level, is a zero level, and is a reference signal that changes over time.

The appended symbols are examples corresponding to the upper side diagram, and correspond to "H" if the signal is higher than the reference level to be compared at the sample point, and "L" if it is lower.

As described above, the present invention stores part or all of the introductory part in advance as a pattern for hourly, daily, weekly, etc. broadcast programs introduced by the same theme music etc. When receiving data again, the receiver automatically starts operating when this pattern matches, making automatic reception easy and highly effective.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is an explanatory diagram of the same operation. DESCRIPTION OF SYMBOLS 1... Receiving section, 2... Amplifier, 3... Encoding circuit, 4... Shift register, 5... Comparison circuit, 7
...Digital storage circuit, 8...Clock generator.

Claims (1)

[Claims] 1 a converter that converts the received signal into digital;
a storage circuit that stores part of the output of the converter; a comparator that compares the output of the converter with the content stored in the storage circuit in a standby state; and a receiver that is controlled by the output of the comparator. An automatic receiving device characterized by comprising a control unit that performs the following functions.