JPH04178031A - Storage device for receiver - Google Patents

Abstract

PURPOSE:To prevent a same frequency from being preset by comparing a frequency received at present with a preset frequency. CONSTITUTION:The communication between a reception frequency storage section 1 and a preset frequency storage section 3 is implemented every time the content of the storage section 1 is changed via a preset comparator section 6 other than write or read of the preset channel. When the contents of the storage sections 1,3 are equal to each other, the content of the preset channel storage section 4 is transferred to a reception channel storage section 2 and to a display section 5, in which the content is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a storage device for a receiver, and particularly to a storage device for a receiver suitable for a PLL frequency synthesizer receiver.

[Conventional technology]

A conventional storage device for a receiver includes a means for presetting a desired broadcast channel, a means for calling up the preset desired broadcast channel, and a means for receiving the channel when the desired preset channel is written or read. It had a means for displaying the frequency in the middle.

[Problem to be solved by the invention]

The conventional receiver storage device described above can write and read preset channels and display the channel, but it also has a means to compare the frequency currently being received and the frequency that has already been preset. Because I haven't.

To find out whether the frequency currently being received was already preset, it was necessary to read each preset channel or perform a preset memory scan. Also, if this operation was not performed, there was a possibility that the same frequency would be stored in two preset channels.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a storage device for a receiver that solves the above-mentioned drawbacks, allows the user to immediately know which frequencies have already been preset, and prevents the user from presetting the same frequency.

[Means to solve the problem]

The configuration of the receiver storage device of the present invention includes a storage unit that stores a plurality of reception frequencies represented by binary signals for a designated address, and a storage unit that stores a plurality of reception frequencies represented by binary signals for the designated address, and a storage unit that stores a channel whose name is represented by a binary signal; a storage unit that stores a currently receiving frequency represented by a binary signal for the designated address; and if the currently receiving frequency has a channel, 2 for the specified address.
a storage unit that stores channels represented by decimal signals; a display unit that displays the channel of the currently receiving frequency; and a display unit that displays the channel of the currently receiving frequency; and means for comparing the frequency having the stored channel with the frequency having the stored channel, and means for causing the frequency currently being received to have the channel of the received frequency when it is determined that the comparison result is the same. It is characterized by what it did.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a storage device for a receiver according to an embodiment of the present invention.

In FIG. 1, the receiver storage device of this embodiment includes a reception frequency storage section 1, preset frequency storage sections 3 and 5, a preset frequency comparison section 6, a reception channel storage section 2,
and a preset channel storage section 4.

Exchange between the reception frequency storage section 1 and the preset frequency storage section 3 is performed every time the contents of the reception frequency storage section 1 change via the preset frequency comparison section 6, other than when writing or reading a preset channel, When the contents of the reception frequency storage section 1 and the preset frequency storage section 3 are equal, the contents of the preset channel storage section 4 are transferred to the reception channel storage section 2, and then transferred to the display section 5 for display.

As a result, for example, if you are currently receiving FM 80.0MHz, and you want to reset this station by 7,
With conventional technology, it is not possible to tell whether a preset has already been made or not, so in order to prevent double presetting, the contents of all preset channels must be changed (
It was necessary to check the reading ratio (for example, by preset memory scan). However, according to this example,
If the channel has already been preset, that channel will be displayed, so you can see at a glance whether or not it has been preset, so there is no need to worry about the same frequency being preset twice.

When scanning for receivable broadcasting stations, conventional technology changes the N value of the frequency being received at the time and moves it up (or down) one channel space at a time, checking whether each frequency is receivable or not. If the frequency is determined to be receivable, the frequency is held for a while, and after a certain period of time, a new receivable frequency is searched for. During this holding state, preset memory writing is possible while scanning continues. (In conventional technology, preset memory can be written to during scan operation.
NEC products include μPD1714G-011. If this product writes to the preset memory while holding a broadcast station in scan mode, the scan operation will continue after a certain period of time has passed after the writing is complete. )
However, at this time, there is no communication between the reception frequency storage section 1 and the preset frequency storage section 3, so even if a receivable frequency already exists in the preset frequency storage section 3, the preset channel storage section 3 Since the value of is not transferred to the reception channel storage section 2, the channel was not displayed on the display section 5. Therefore, in order to continue scanning, give up writing to the preset memory,
The only option is to do this after the scan is complete, or to be prepared for double writing, and the only way to eliminate the possibility of double writing is to end the scan.

However, according to this embodiment, even during scanning, if the received frequency exists in the preset frequency storage section 3, it is detected by the preset frequency comparison section 6, and the value in the preset channel storage section 4 is detected. Since it can also be transferred to the reception channel storage section 2, it can be displayed on the channel display section 5. Therefore, it is possible to write the same frequency twice without completing the scan.

The receiver storage device of this embodiment includes means for comparing the frequency currently being received and each preset frequency;
When it is determined that the frequency currently being received and the preset frequency are the same, the preset channel is assumed to be the channel of the frequency currently being received.

and means for displaying channels.

〔Effect of the invention〕

As described above, the present invention has the advantage that by comparing the frequency currently being received and the preset frequency, it can be known at a glance whether the frequency currently being received has already been preset.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a storage device for a receiver according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1--Receiving frequency storage unit, 2--Receiving channel storage unit, 3--Preset frequency storage unit, 4--Preset channel storage unit, 5--Display unit, 6--
Preset frequency comparison section.

Claims (1)

[Claims] a storage unit that stores a plurality of reception frequencies represented by binary signals for a designated address; and a storage unit that stores a channel representing a name of each reception frequency for the designated address and represented by a binary signal; a storage unit that stores the currently received frequency represented by a binary signal for the designated address; a display unit that displays the currently received frequency; If the frequency has a channel, a storage unit that stores the channel represented by a binary signal for a specified address; a display unit that displays the channel of the frequency that is currently being received; means for comparing the frequency currently being received and the frequency having the stored channel when the frequency being received does not have a channel; 1. A storage device for a receiver, comprising means for assigning a channel of a receiving frequency to a frequency currently being received.