JPS63155912A - Synthesizer receiver - Google Patents

Abstract

PURPOSE:To prevent a malfunction and to improve an operability by switching a step sweep and a quick traverse sweep through an operating force of two steps without depending on the operation time of a sweep button by shorting nodal points of the two steps. CONSTITUTION:When the up/down sweep buttons 1, 2 are slightly pressed, conductive materials 11, 12 respectively short print patterns 16, 14, thereby, information A is inputted to a microprocessor to sweep a receiving frequency. In an interval x, every time when a pressing button 6 is slightly pressed, the receiving frequency is moved by a prescribed f. Then, when the pressing button 6 is strongly pressed, a conductive material 10 shorts a print pattern 15 successively to the short of the print patterns 16, 14, thereby, information B is inputted to the microprocessor successively to the information A and in an interval (y), the receiving frequency starts the quick traverse sweep by the f successively in a short cycle. Thereby, the malfunction in a channel selection operation of the receiving frequency and the operability can be remarkably improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a synthesizer receiver in which reception frequency selection is performed using up and down sweep buttons.

Conventional technology In recent years, with the spread of frequency synthesizer receivers using PLL circuits, their reception performance and channel selection functions such as preset reception using memory have greatly improved. The channel selection function is also being improved through microprocessor programs.

A conventional synthesizer receiver will be explained below.

FIG. 6 is a block diagram showing an example of a synthesizer receiver;
FIG. 6 is a diagram for explaining the sweep operation and its operation of the synthesizer receiver, in which 1 is an up sweep button, 2 is a down sweep button, 3 is a receiving circuit, and 4 is a synthesizer that determines the tuning frequency of the receiving circuit 3. The circuit 6 is a microprocessor that provides the synthesizer circuit 4 with a frequency code for frequency setting.

The operation of the synthesizer receiver configured as described above will be described below.

First, the microprocessor 6 inputs information from the amplifier and down sweep buttons 1 and 2 and starts sweeping the reception frequency. In section C of FIG. 6, each time the sweep buttons 1 and 2 are pressed, the receiving frequency moves by a predetermined amount Δf. On the other hand, in the section, if the sweep buttons 1 and 2 are kept pressed for more than a predetermined time width TO, the reception frequency starts to be continuously fast-forwarded by Δf in short cycles.

Problems to be Solved by the Invention However, with the above-mentioned conventional configuration, the user has to distinguish button operations for a certain period of time in order to perform a fast-forward sweep, which makes the operation cumbersome. There was a risk of malfunction because a slight time difference could result in either a step sweep or a fast-forward sweep.

The present invention solves the above-mentioned conventional problems, and provides a synthesizer receiver that can eliminate malfunctions and greatly improve operability.

Means for Solving the Problems In order to solve the above problems, the synthesizer receiver of the present invention short-circuits the nodes in two stages by operating force in order to perform the tuning operation of the receiving frequency in the up direction or the down direction. Consisting of a sweep button, means for performing a step sweep for each predetermined reception frequency for each one-step node short-circuiting operation of this sweep button, and means for performing a fast-forward sweep of the reception frequency by two-step nodal short-circuiting operation of this sweep button. has been done.

Operation According to the above-described configuration, the present invention has the above-described configuration.
In order to short-circuit the nodes of a step and perform a fast-forward sweep, press the sweep button strongly.In other words, by short-circuiting the nodes of two steps, step sweep and fast-forward can be performed by the operating force of the two steps, regardless of the operating time of the sweep button. The sweep can be switched, preventing malfunctions and improving operability.

Embodiment Hereinafter, a synthesizer receiver according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of a sweep button of a synthesizer receiver according to an embodiment of the present invention, and FIGS. 2 to 4 explain the sweep operation and its operation of the synthesizer receiver of the present invention.

In FIG. 1, 6 is a push button, 7 and 8 are springs, 9 is an elastic body, 10, 11.12 is a conductive material affixed to the elastic body 9, and 1
3 is a printed wiring board, 14, 15° and 16 are printed patterns, which are the same number of circuits as the printed pattern in FIG. 1B.

The operation of the synthesizer receiver of this embodiment configured as described above will be explained below with reference to FIGS. 2, 3, and 4.

First, when the push buttons 6 of the up and down sweep buttons 1 and 2 are pressed weakly as shown in FIG. to sweep the receiving frequency. In section X of FIG. 4, each time the push button 6 is pressed weakly, the receiving frequency moves by a predetermined amount Δf. Next, when the push button 6 is pressed strongly as shown in FIG.
is input, and in interval y in FIG. 4, the reception frequency starts to continuously sweep in fast forward motion by Δf in short cycles.

Here, Δf is, for example, 100Ulz in domestic 7M broadcasting,
E KHz is normal for 5M broadcasting.

As described above, according to this embodiment, the synthesizer receiver is provided with a sweep button that performs a two-step node short-circuiting operation by operating force;
By providing a means for performing a step sweep for each predetermined reception frequency for each one-step nodal short-circuiting operation of this sweep button, and a means for performing a fast-forward sweep of the reception frequency by two-step nodal short-circuiting operation of this sweep button, It is possible to prevent malfunctions in the reception frequency tuning operation and to greatly improve operability.

Effects of the Invention As described above, the present invention provides a sweep button whose nodes are short-circuited in two stages by operating force in order to perform tuning operation of reception frequency in the up direction or down direction, and a sweep button which short-circuits the nodes in one stage of this sweep button. We have provided a means to perform a step sweep for each predetermined received frequency for each operation, and a means to perform a fast-forward sweep of the received frequency by a two-step nodal short-circuit operation of this sweep button. Channel selection can be achieved by pressing the sweep button weakly and performing a step sweep as many times as necessary. In addition, when selecting a distant frequency, pressing the sweep button hard to perform a fast forward sweep allows you to select the station in a short time, prevents malfunctions, and greatly improves operability. This makes it possible to realize an excellent synthesizer receiver that can perform

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a sweep button of a synthesizer receiver according to an embodiment of the present invention, B is an equivalent circuit diagram of its printed pattern, and FIGS. 2 and 3 are sectional views showing the operation of the same sweep button. , FIG. 4 is a timing diagram for explaining the sweep operation and its operation of the synthesizer receiver of the present invention, FIG. 5 is a block diagram showing an example of a synthesizer receiver, and FIG. 6 is a sweep diagram of a conventional synthesizer receiver. FIG. 4 is a timing chart for explaining operations and their actions. 1... Up sweep button, 2... Down/sweep button, 3... Receiving circuit, 4... Synthesizer circuit, 5... Microprocessor, 6.
...Push button, 7, 8...Spring, 9...
...Elastic body, 10, 11.12... Conductive material, 1
3°゛...Printed wiring board, 14, 15, 16°°°゛°
°Printing pattern. Name of agent: Patent attorney Toshio Nakao and one other person G=
-Push button Figure 4 ←χ-211-11--11-- Figure 5 Figure 6

Claims (1)

[Claims] A sweep button whose nodes are short-circuited in two steps by operating force in order to select the reception frequency in the up or down direction, and a step sweep for each predetermined reception frequency for each node short-circuit operation of this sweep button. 1. A synthesizer receiver comprising: means for performing a fast-forward sweep of the received frequency by a two-step nodal short-circuiting operation of the sweep button.