JPS58103237A - Receiving device - Google Patents

Abstract

PURPOSE:To simplify the operation and to facilitate the reselection of channels, by providing a receiving part for receiving broadcast electric waves and a display having arranged picture elements and by giving a blinking drive to the picture elements through a driving part of the display and with a period in response to the receiving intensity. CONSTITUTION:A receiving device is provided with a radio receiver 1 which receives the broadcast electric waves, a control part 21 connected to a key input device 6, a display 5 having arranged picture elements, and a driving part 4 which drives the display 5. Whe the control part 21 starts sweeping, a level switch 22 is set at an intensive electric field. The the receiving frequency is applied to a shift register 41 of the driving part 4 when a broadcast station is selected, and an AND is successively secured by a decoder 42. This AND output is supplied to drivers 43 and 44, respectively. At the same time, the blanking signals supplied from frequency dividing circuit 45 and 46 are supplied to the drivers 43 and 44. Then the picture elements of the display 5 are blinked at a high speed with a broadcast station of intensive electric field and at a low speed with a broadcast station of weak electric field, respectively. This process facilitates the reselection of channels.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radio receiver or the like that displays the received frequency r, and relates to a receiver suitable for re-tracing music based on the displayed sound at '#' ◇ Conventional high-end radio receivers In W, a large number of light emitting elements (154) (154)... are arranged in a row in the structure shown in Figure 1, and one element is assigned a frequency of ft1, and the light is emitted according to the broadcasting station or the reception frequency. Element (154) (1
54)... was turned on, but the light-emitting elements (154) (154)... are arranged in a matrix according to the frequency, but when I tried to check the number 11, I found that the light-emitting elements (154) (154)... were turned off. Since it must be calculated based on
It is easy to change the number of broadcast stations, but it takes time to recognize where they are located.Also, in stopwatches, etc., dot elements are arranged in a circle to make it easier to change the display position. However, it is easy to distinguish because the lighting positions of the point elements move sequentially, and the above frequency display, which is impossible to cross the broadcasting service area in a few minutes, is close to a static display. This L una frequency display? The present invention has been made in consideration of these points, and the present invention will be described in detail below based on examples. Block diagram of the receiving device of the embodiment, No. 6
Figure 4 (aHbHc) is a waveform diagram showing an example of the drive waveform of the display. In Figure 2, (1) is a PLL type In the radio receiver, the signal received by the antenna (111) is sequentially processed by the high frequency intensifier 0 mixer ([31 intermediate frequency intensifier I detector unit U and the low frequency intensifier αe, and the speaker output a is sounded. In the process, the frequency of the six local oscillations introduced into the mixer 113 is divided into 10 grams by N by 11 (18 (indicated by the control side (E) for the division ratio N), and the N-divided signal and the crystal The oscillator 31) compares the phase of the reference signal with the high-precision reference signal obtained by the oscillator (3) in the phase comparator 64, and then passes the reference signal to the low-pass filter I2.
1Jt- to lock the N-divided signal to the phase of the reference signal. Therefore, by sequentially changing the division ratio N output by the control section (2), automatic sweeping can be achieved, and by processing this division ratio N by 9 times, the frequency being received can be changed.
Save. Therefore, by monitoring the output of the intermediate frequency multiplier (141) and automatically sweeping it, a skewer for detecting the broadcast frequency can be created.
Furthermore, at this time, by monitoring the reception signal Mk through a level switch @ such as a programmable attenuator, it is possible to detect the broadcast frequency according to the reception strength (approximately equal to the electric field strength).

(4) is a driving section of the display device (5) consisting of a liquid crystal, etc., which inputs the reception frequency detected by the control section (2) into a shift register (B) as a serial signal, and sends it to a shift register (B) using a decoder.
It is converted into a digital No. 20 signal and sent to two drivers (to) in correspondence with the level control signal of the level switch (2). Driver@4ri Based on this digital signal, use a drive pulse obtained by dividing the output of the oscillator (3) with a frequency divider Q. If the digital signal is present, use an inverted signal; if not, use a signal in phase with the drive pulse. to drive the display (5). The two drivers drive a common picture element, and when a digital signal is applied to the picture element, the other driver stops driving the picture element. Mll is a frequency divider.

As shown in FIG. 6(b), this display device (5) has polarizing substrates (52) (52) (5) having transparent electrodes (51) (51)...
2) with nine nematic liquid crystals (53
) It is a light-receiving type liquid crystal display device that is held between k. The display content, that is, the pattern of transparent electrodes (51), (51), etc. is as shown in FIG.
4)...t An analog display section arranged in a circular shape so that the center is on the extension of the picture element (54) (54)...
It consists of a digital display section consisting of picture elements (55) (55)... arranged in a diagonal shape, and is provided by printing etc.
It has auxiliary display parts (56) (56)...◇
The bar-shaped picture elements (54 x 54) are made thicker and longer every 10th, and there are 120 in total.

(6) Haki - A human-powered device can be used to instruct the start of automatic sweep, manual switching of the display, etc. Note that the driving circuit for the digital display section is omitted.0 In the above-described configuration, when the fishing control section (2) starts sweeping, the level switch @ is set to a strong electric field (large attenuation amount).

When a broadcasting station is found, it outputs its receiving frequency, which is received via the shift register υ and then lit by the decoder. That data is stored in the driver (
c) and drives the corresponding picture element (54) of the display (5) - for example, the frequency is 531 KHz
Since broadcasting is allowed every 9KH2 between yys and 1602KHz, the number is 120, and the picture element (54
) (54) ... and one-to-one correspondence.In addition, in the case of FM, opening is allowed every 100KHz between 76MH2 and 90MH2, but it is not opened at all below 78MH2, so from 78MH2 to 9QMHg If you display the space between them, the number will be 120 and the picture element (
54) When the 0 sweep corresponding to the number of (54) . When a broadcasting station is found, the data is sent to the driver. Because of the strong electric field at some broadcasting stations, the data will be the same as the previous one, but if you add a priority circuit to the driver, the data will be the same. is the two drivers (
In the above display, a blanking signal is supplied to the driver from the divider @a. This situation is illustrated in Figure 4.
In a), the display for weak electric field (1+) and the display for strong electric field (C) show the respective waveforms when the light is off, and the common side electrode of each picture element (
51) is supplied with the same common signal (Vc), and for the lit picture elements, as shown in (aHb), the same phase as the common signal (Vc) is added as a segment signal (VD), and when the lights are turned off, For picture elements, an inverted signal is added as shown in (c).

However, in these segment signals (VD), when the lighting is on, a DC signal is output periodically as a blanking signal.◎The liquid crystal that is the display body has a common signal (VC) (
! - Since the sum of the segment signals (vn) is added, the applied signal (VL) becomes a rectangular wave when Fi is on, and becomes zero voltage when it is off. When the light is turned on, a pulse train exceeding the threshold voltage and a pulse train having a voltage half that voltage alternate, so the former is selected and the latter is half-selected (unselected when the light is turned off), and the picture element blinks to the viewer. Looks like it's working. As an example of the above, the pulse of the drive phase (how to output the splitter)
is 40 Hz, the divider is a 1/2 frequency divider, the blanking signal is 2 Hz and IHz, and the picture element corresponding to the broadcasting station with a strong electric field blinks quickly at 2' Hg, and the blanking signal is 2 Hz and IHz. Broadcasting stations are displayed by slow blinking at 141Hz. Broadcasting stations found by sweeping in this way are displayed by blinking according to the strength of the reception, so you can listen to them after sweeping. When choosing a good broadcasting station, consider the location of the frequency and the degree to which you can enjoy it (for example, whether you can listen to it even if it is difficult to hear due to noise, etc.)
can be easily recognized.

It should be noted that the present invention is not limited to the embodiments described above, and can be applied in various ways without departing from the spirit of the present invention. A display with picture elements and a picture of the display 3I! In the receiving device, the receiving device includes a driving unit for a display device that displays a signal corresponding to a frequency or a broadcasting station received by the receiving unit, wherein the driving unit drives the picture element to blink at a period corresponding to the reception intensity of the receiving unit. It is very easy to select songs based on this display.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional radio receiver, Fig. 2 is a block diagram of a receiving device according to an embodiment of the present invention, Fig. 6 is a plan view (a) and a cross-sectional view (b) of a display, and Fig. 4 (a) (b) (c)
r! ◎ It is a drive waveform diagram of the display device.
)... Level switch, (3)... Oscillator, (41.
... Drive unit, (51... Display unit, (54) (54)
・Picture element. Figure 1 Figure 2 Figure 4

Claims (1)

[Claims] 1) *Xt- aligned with the receiving section that receives broadcast radio waves
In the receiving device, the driving section includes a display device having a display device, and a driving portion for the display device that receives pictures at a receiving portion of the display device and displays them in correspondence with a fixed frequency or a broadcasting station. The above pictures are collected at a period according to the stable? Receiving device 1゜ with blinking drive as t% sign