JPS6010118Y2 - preset receiver - Google Patents

Description

[Detailed description of the invention] The present invention relates to a preset receiver equipped with a storage device.
In particular, the present invention relates to a novel release device for a memory key that controls writing to a storage device.

Recently, with the advancement of digital technology, radio receivers have become
The system uses a LL synthesizer to perform digital tuning and digitally display the receiving frequency, and is also equipped with a storage device to electronically store the receiving station.

As such a preset receiver, one having a configuration as shown in FIG. 1 has been implemented.

That is, a digital tuner part 2 which is composed of a PLL synthesizer or the like and performs a sweeping operation by counting the sweep pulses from the sweep pulse generator 1;
It consists of a display 3 to which received frequency output is added, and a storage device 4 for storing reception station data, and writing and reading to and from the storage device 4 are controlled by a memory key 5 and preset keys 6, 6.6. is being configured to do so.

By the way, the memory key 5 is generally a non-locking switch such as a touch key, and a delay is applied to the reset terminal of the flip-flop 7, for example, so that the memory state is automatically released after a certain period of time has passed since the key was operated. After the circuit 8 is connected and the memory key 5 is operated to enter the set state, the flip-flop 7 is reset after a predetermined period of time has elapsed.

Therefore, when writing to the storage device 4, the data cannot be stored unless any preset key 6 is operated within a predetermined period after the memory key 5 is operated.

That is, each time the preset key 6 is operated, the memory key 5 must be operated, making the operation cumbersome.

Therefore, the present invention was developed in view of this point, and features a structure in which the memory state is cleared by detecting the end of the sweep operation, and all presets can be performed with just one memory operation. The present invention provides a preset receiver.

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

Components that are the same as those in FIG. 1 are designated by the same reference numbers and their explanations will be omitted.

Reference numeral 9 denotes an AND gate connected between the sweep pulse generator 1 and the tuner part 2, and the other input is a reception detection signal which, upon detection of the reception signal S, outputs a "L" level for a predetermined period and closes the AND gate 9. A circuit 10 is connected.

That is, when the station is received, the station is received for a predetermined period of time, and after the predetermined period of time, the sweep is started again, which functions as a so-called temporary stop function.

Reference numeral 11 denotes a sweep stop detection circuit which detects the stop of pulse generation by the sweep pulse generator 1 and issues a reset pulse after a predetermined period of time after detection, and whose output is connected to the reset terminal of the flip-flop 7.

In addition, the sweep pulse generation circuit 1 is operated by pressing the UP key 12 and the DOWN key 1.
Pulse generation is started by operating 3 and stopped by operating TOP key 14.

Next, the preset operation of the present invention having such a configuration will be explained.

At this time, when the memory key 5 is first operated, the flip-flop 7 is set, and upon generation of the write signal W, the storage device is set to the memory state.

For example, when the UP key 2 is operated, a sweep pulse is generated from the sweep pulse generator 1, and the tuner part 2 starts sweeping in the direction of the highest received frequency.

If a station is received in the middle, the output of the reception detection circuit 10 becomes "L" level due to the reception detection signal S, and the AND gate 9 is closed, and reception of that station is continued for a predetermined period.

At this time, if it is desired to preset that station, for example, by operating the preset key P1, the received frequency data of this station will be written to the address of the storage device addressed by the preset key P1.

Then, after a predetermined period of time has elapsed in the reception detection circuit 10, the AND gate 9 is opened again and the sweep to the highest frequency is resumed, and if there is a receiving station, it is temporarily stopped.

During this time, the desired station can be preset in the storage device by operating the preset key 6 in the same manner as described above.

When the preset is completed, if the s'rop key 14 is operated to stop the pulse generation of the sweep pulse generator 1,
When a predetermined period of time has elapsed since the stop, the sweep stop detection circuit 11 generates a reset pulse, the flip-flop 7 is reset, and the sagging memory state is automatically released.

In the memory state canceling machine, by operating the preset key 6, received frequency data is read out from a designated address in the storage device 4 to the tuner part 2, and preset tuning is performed.

As mentioned above, in the preset receiver of the present invention, since the memory state is not released while the sweep pulse is being generated, it is possible to release the memory state by substantially stopping the sweep operation with a simple configuration. All preset keys can be preset by operating the preset keys once, making presetting operations easy and extremely practical.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional preset receiver, and FIG. 2 is a diagram showing a preset receiver according to the present invention. 1...Sweep pulse generator, 2...Part of digital tuner, 3...Display section, 4...
...Storage device, 5...Memory key 6...
...Preset key 10 reception detection circuit, 11...
...Sweep stop detection circuit.

Claims (1)

[Scope of utility model registration request] A sweep pulse generation circuit that generates sweep pulses, a part of a digital tuner that performs a sweep operation by counting the sweep pulses of this sweep pulse generation circuit, and a part of the digital tuner that is set in a memory state by operating a memory key. a storage device for storing receiving station data of the section at a specified address of the preset key; a flip-flop for storing the operation of the memory key and providing a signal for setting the storage device in a memory state; and a sweep pulse generating circuit. A preset receiver comprising a sweep stop detection circuit that detects the stop of pulse generation and resets the flip-flop.