JPS63215264A - Channel selection device for liquid crystal television mounted on seat - Google Patents

Abstract

PURPOSE:To easily change a channel mode by using a control signal from a remote control reception circuit to control the channel mode of a channel selection circuit in response to the memory content of a storage circuit rewritten by the said control signal. CONSTITUTION:The storage circuit 102 uses a control signal of a remote control reception circuit to rewrite the memory content and outputs a data signal to a channel select circuit 104. Every time the remote control reception circuit 101 receives a transmission signal from a remote control transmitter and rewrites the memory content of the storage circuit 102, the channel select circuit 104 selects the channel mode in response to the memory content. Then data is outputted to a tuner tuning voltage generating circuit 106 in response to the switch input of a switching circuit 103. Thus, the channel mode of the channel selection device of the seat-mounting type liquid crystal television is switched simply in this way.

Description

[Detailed description of the invention] [Industrial application field] The present invention applies to a channel selection device for a seat-mounted liquid crystal television.

[Conventional technology]

Regardless of the seat-mounted LCD TV, the reception channel on the TV can be selected by turning on and off the channel selection button, or by setting the channel to the desired channel by turning on or off the channel selection button, or by using the remote near/troll method, by receiving the signal from the remote control signal transmitter. Generally, you set it to the channel you want to watch. Even in seat-mounted LCD TVs, which are currently under development and consideration and are used by attaching them to the seats of aircraft, trains, buses, etc., the channel selection device is either a channel selection button like this, or a method in which channels are specified using a remote control. belongs to.

However, in the case of a seat-mounted LCD TV, it is used as a CATV system, so the VTR1 cable wiring,
Since the amount of investment required for safety measures etc. is enormous, airline companies, for example, have a strong desire to charge a fee for viewing television in order to recover the costs. Therefore, l) it is necessary to devise a way to show television only to users who have paid money.

-For example, the power switch may be set to one key, and only the person who has paid the fee can turn on the power key, or the earphones and power switch may be linked, and the earphones may be lent in exchange for payment, and the user may use the earphones. When you plug it into the jack, the power switch turns on, etc.

[Problem that the invention seeks to solve]

However, in these conventional systems, out of the many TV channels, only one channel is shown as a paid channel only to those who have paid the fee, and all others are free channels. There was a problem in that it was not possible to respond to the various requests of users, such as making 3 channels FR channels and making others free.

There were also problems in making the seat-mounted LCD televisions, which were installed at great expense, as widely known as possible to the general public and promoting their use.

The present invention was made in view of these problems, and its purpose is not to change the selected channel, but to respond to the various demands of users by changing the channel mode itself. An object of the present invention is to provide a channel selection device for a seat-mounted LCD television, which allows the channel mode to be easily changed by transmitting signals from a remote control transmitter or similar equipment.

Furthermore, by providing this channel selection device, the present invention aims to popularize and promote seat-mounted LCD televisions.

The channel mode mentioned here is - For example, A: CII → CII 2 → CII 3
→CII 4 →CH5→CH1→Cll 11:Cl11 →CII 2 →CII 3
→CII 4 →CII 5-)C116→ C
Refers to the pattern of channels to be selected, such as 111. If we call A the normal mode and B the ITV mode, you can watch more CIIG in B than in A.

The object of the present invention is to provide a channel selection device for a seat-mounted liquid crystal television that can easily change the channel mode, although the above is just an example.

[Means for solving problems]

In order to solve the problems of conventional technology such as 111f,
The channel selection device for a seat-mounted LCD television according to the present invention includes a) a switching circuit (A) that generates a signal using a push button, touch button, etc. b) a channel selection circuit (U) that changes channels according to the output signal of the switching circuit. C) A channel indicator circuit (C) that displays the channel selected by the channel select circuit. d) A remote control signal receiver that receives, detects and amplifies the signals transmitted from the remote control transmitter, and outputs a control signal. Circuit (D) e) A memory circuit (E) that rewrites the memory contents according to the control signal from the remote control signal receiving circuit.
It is characterized in that the channel mode (13) is controlled according to the memory contents (E).

〔Example〕

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

FIG. 1 is a block diagram of a channel selection device for a seat-mounted liquid crystal television according to the present invention. 101 is a remote control signal receiving circuit which detects and amplifies the transmission signal No. 4 sent from the remote control signal transmitter and outputs a core signal. Reference numeral 102 denotes a QJQ circuit, which rewrites the memory contents according to a control signal from a remote control receiving circuit and outputs a data signal to a channel selection circuit 104. At this time, the channel select circuit 10
4 takes a channel mode corresponding to the data signal of the tα circuit 102. Furthermore, channel select circuit 1
04 is input every time an output signal is input from the switch 71 circuit 103.) Lt If 5? = to be attacked.

A channel indicator circuit 105 displays a channel in accordance with the output of the channel select circuit 104. 10G is a tuner tuning voltage generation circuit, which is a type of D/Δ converter that converts the digital output signal of the channel select circuit 104 into a DC tuning voltage. 107 is a tuner that selects stations according to the same wJ voltage, summer Fr, l
The T is generated. Remote control receiving circuit 101
receives transmission number 4 from the remote control transmitter and changes the age of the memory contents of the circuit 1a circuit 102, the channel select circuit 104 selects a channel mode according to the memory contents. Then, a channel is specified according to the switch input of the switching circuit 103, and data is output to the tuner tuning voltage generation circuit 106. In this way, it becomes possible to easily switch the channel mode of the channel selection device of the seat-mounted liquid crystal television.

21.0 How is the channel mode of the channel select circuit controlled according to the data content of the circuit?
Another embodiment of the present invention will be explained.

FIG. 2 is an example of an application of the channel selection device for a seat-mounted liquid crystal television according to the present invention, in which the channel mode is switched between 5 channels and 6 channels.

204 is a channel select circuit. In this example, 6
It is a hexadecimal counter with a built-in decoder for converting into a base number, and each time an input signal is input from the 203 switching circuit, the output changes from C11l→CII2→CII3→. 205 is a channel indicator circuit;
11 to 210 are channel indicator LEI), 2
Reference numerals 21 to 22G are drive transistors, which light up in the designated channel 115. 20G is a tuner tuning voltage generation circuit, and 207 is a tuner, which is selected according to the tuning voltage.
) and outputs the IF multiplied signal. 241, 242, 243 are analog switches, and 244, 245 are diodes. Reference numeral 202 denotes a memory circuit composed of two flips 70 and 231 and 232.

Assume now that the hexadecimal counter of the channel select circuit 204 is reset and set to Cut, and the flip-flops 231 and 232 are also in the reset state. At this time, for both flip 70 tubes, the Q output is LSQ output is I
I, the analog switches 241 and 243 are on, and the analog switches 242 are on. In this state, when switching the switching circuit 203 and inputting a human signal to the hexadecimal counter of the channel select circuit 204, the hexadecimal h
'／ 79 Node cover, CII 1 → CII 2-
In the channel indicator circuit 2.5, the LED lights up for each designated channel to display the channel, and the tuning voltage generation circuit 20
6. The tuner 207 performs channel selection using the ll'i fixed tune and the fixed main channel, and outputs an IF multiplied signal. C1
15 is selected, the switching circuit 203
When the analog switch 241 is switched on, the hexadecimal counter of the channel select circuit 204 is reset and returns to C11l. That is,
In this case, the channel mode is CI-11→CH2→
CIf 3 → CI-I 4 → C]-15 → CI-11
It is.

Next, consider a state in which a signal is transmitted from the remote control transmitter and a control signal is input from the remote control signal receiving circuit 201 to the storage circuit 202. The Q outputs and Q outputs of flip-flops 231 and 232 are inverted, and the Q outputs of both flip-flops are II.
, the Q output also becomes L, and at this time, the channel indicator circuit 205, CH1 (DLE D 211 disappears, CHO) LED 21 G lights up, indicating that the channel mode has changed. However, in this application example, the hexadecimal counter output of the channel select circuit 204 remains set to Cl1l, so the channel selected by the Tully-tuned voltage tuning circuit 20G and tuner 207 remains C111. be.

Next, when the switching circuit 203 is switched in the state of , the output of the hexadecimal counter of the channel select circuit 204 is set to C112. At this time, the output of the flip-flop 232 of the two flip-flops 70 of the memory circuit 202 is inverted and becomes Q output 11, Q output 11, so the analog switch 243 is in the ON state,
Indicator L of channel indicator circuit 205
In E I), CII 6 goes out and CI 2 lights up. Furthermore, when the switching circuit 203 is switched, the signals shift sequentially from C112 to Ctl 3 to CII 4, and in the channel indicator circuit 205, an LED lights up for each designated channel to display the channel, and the tuning voltage generation circuit 206 and the tuner -J--207 selects a channel corresponding to the designated channel and outputs an IF multiplied signal. When the switching circuit 203 is switched with CII 5 selected, the analog switch 241 is off and the analog switch 242 is on. select. Then, when the switching circuit 203 is further switched, the hexadecimal counter of the channel select circuit 204 returns to Cl1l. That is, the channel mode in this case is C1
1l groan CII 2 → CII 3 → CII 4 → CII
5→CII6→C11l.

In this application example, the memory contents of the storage circuit 202 are changed by the transmission No. 4 from the remote control transmitter, and the channel select circuit 204 is controlled by the memory contents, thereby changing the channel as shown in FIG. This makes it easy to switch modes.

In this application example, the cases where the channel mode is 5 channels and 6 channels have been specifically explained. However, the present invention can also be applied to cases where there is a large number of channels or even more complex channel mode switching. This can be done by setting the circuit to such a channel mode in advance.

〔Effect of the invention〕

As described above, according to the present invention, the channel mode of the channel select circuit (B) is determined by the memory contents of the α circuit (E), which is changed by the control signal from the remote control receiving circuit (D). The channel mode can be easily changed by changing the memory contents of the memory circuit by sending signal 4 from a remote control transmitter or similar device to the remote control receiving circuit. becomes. Therefore, it will be possible to meet the diverse demands of users, including airlines, and will be of great use in the spread and promotion of seat-mounted LCD televisions.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a channel selection device for a seat-mounted LCD television according to the present invention. FIG. 2 is an example of an application of the channel selection device for a seat-mounted LCD television according to the present invention. FIG. Channel mode change side view Above Applicant: Seiko Epson Corporation Figure 1 Figure 3

Claims (1)

[Claims] a) A switching circuit (A) that generates a signal by a push button, a touch button, etc. b) A channel select circuit (B) that changes the channel according to the output signal of the switching circuit c) A selection by the channel select circuit d) A remote control signal receiving circuit (D) that receives the transmitted signal from the remote control transmitter, detects and amplifies it, and outputs a control signal e) The remote f) In a channel selection device for a seat-mounted LCD television, which has at least a memory circuit (E) that rewrites the memory contents according to a control signal from a control signal receiving circuit, (B) ) Channel mode selection device for a seat-mounted LCD television