JPS5888934A - Communication equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to radio receivers, television receivers, and other communication equipment, and an object of the present invention is to provide an excellent communication equipment that has a simple configuration and allows you to repeatedly listen to parts that you could not hear. This is the purpose.

Generally, in radio receivers, television receivers, etc.
When listening to weather forecasts, news, mail addresses, quizzes, etc., it is often the case that a part of the information is missed and the objective cannot be achieved.

The present invention has been made in view of such problems,
To provide an excellent communication device that allows you to immediately repeat and listen to parts that you cannot hear.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A communication device according to the present invention will be described below with reference to drawings of an embodiment. In the figure, 1 is a broadcast receiving circuit that receives radio broadcasts, television broadcasts, etc.; 2 is an amplifier circuit that amplifies the audio signal received and detected by the receiving circuit 1 and drives a speaker, etc. (not shown); 3; 4 is an analog-to-digital conversion circuit (hereinafter simply referred to as a Mu-D conversion circuit) that converts the audio signal received and detected by the receiving circuit 1 into a digital signal, and 4 the digital signal converted by the A-D conversion circuit 3. 5 is a random access memory (hereinafter referred to as RAM) that stores the digital signals stored in the RAM 4 in sequentially and repeatedly updated real addresses; (simply referred to as a D-DC conversion circuit), 6 is a counter for obtaining data for sequentially and repeatedly updating the address of the RAM 4, and 7 is a MU-D conversion circuit 3. RAM4. D-me conversion circuit 5. Clock pulse generation circuits for driving the counters 6, 8 are pitch control circuits for controlling the frequency of clock pulses obtained by the clock pulse generation circuit 7, and S1 and S2 are mutually interlocking changeover switches.

In the above embodiment, when the changeover switches s, , and S2 are respectively connected to the terminal a side, the broadcast receiving circuit 1
Since the audio signal received and detected by is directly applied to the amplifier circuit 2 via the switch S1, it is possible to listen to radio broadcasts, television broadcasts, etc. in the same way as a normal radio receiver or television receiver. . In this case, according to the embodiment described above, the clock pulses obtained by the clock pulse generation circuit 7 are different from each other in the conversion circuit 3.
゜Since the voltage is applied to the RAM 4 and the counter 6, these circuits 3 and 4.6 operate, and the audio signal received and detected by the broadcast receiving circuit 1 is converted into a digital signal by the digital conversion circuit 3. The data is sequentially stored in RAM '4. As mentioned above, the RAM 4 is configured so that its address is sequentially and repeatedly updated by the output of the counter 6.
The converted digital signals are sequentially and repeatedly updated and stored.

When the switches S1y and S2 are turned to the terminal side, the broadcast receiving circuit 1 and the amplifier circuit 2 are disconnected, and the input terminal of the amplifier circuit 20 is connected to the output terminal of the D-DC converter circuit 6 via the switch S1. . In this case, switch S2
The clock pulse generation circuit 7 is connected to the D-DC conversion circuit 5 via
Since the output of is applied, the D-A conversion circuit 6 becomes operational, and the signal stored in the RAM 4 is read out by I11, which is converted into an analog signal and applied to the amplifier circuit 26 via the switch S1. . Therefore, parts that cannot be heard under normal reception conditions are recorded by the switch S1. S2
You can listen to the song repeatedly by inserting it into the terminal.

In this case, since the pitch control circuit 8 is connected to the clock pulse generation circuit 7, the reading speed of the @ symbol stored in the RAM 4 can be arbitrarily selected by the pitch control circuit 8. If the speed at which the pitch control circuit 8 reads the signal stored in the RAM 4 is made slower than the speed at which the digital signal is stored in the RAM 4, then the part that cannot be heard in the normal reception condition will be read more slowly than in the normal reception condition. As is clear from the examples above, according to the communication device of the present invention, with a simple configuration, it is possible to immediately and repeatedly listen to the portion that was not heard or the 1% portion that was missed. This is extremely advantageous in practical terms.

In particular, according to the present invention, since the audio signal No. 18 is converted into a digital signal and stored therein using RAM, the entire circuit can be made into an annual bond circuit and can be made compact, reducing costs. It is also extremely advantageous.

[Brief explanation of drawings]

The figure is a block diagram of an embodiment of a communication device according to the present invention. 1...Broadcast receiving circuit, 2...Amplification circuit, 3
...Analog-digital conversion circuit, 4...
...Random access memory, 6...
Digital/analog conversion circuit, 6... Counter, 7... Clock pulse generation circuit, 8...
...Pitch control circuit.

Claims (1)

[Claims] An analog converter that converts the output of the receiving circuit into a digital signal.
A digital converter circuit, a random access e-memory that stores the digital code converted by an analog-to-digital converter circuit while repeatedly updating it, and a digital converter that reads the signal stored in the random Φ access memory and converts it into an analog signal.・While listening to the signal received by the receiving circuit, the output of the receiving circuit is converted into a digital signal by the analog-to-digital converting circuit, and the result is sequentially and repeatedly updated in the random access memory. A communication device configured to store the signal from above, read the signal stored in the random access memory at any time, convert it to an analog signal by a digital-to-analog conversion circuit, and listen to the signal. .