JPH0213990B2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a television reception system that is used by a combination of a small television receiver placed at hand and a large television receiver placed far away. It is.

<Prior art> Recently, television receivers that simultaneously display a different television image as part of one television image, and television receivers that simultaneously display two television images using two large and small cathode ray tubes, have been developed. Television receivers are commercially available.

However, with such a television receiver, 2
Despite having two independent image receiving functions, the two images were projected within the same plane and could not be used separately as two receivers.

<Purpose> The present invention has been made in view of the above points, and uses two separable large and small television receivers to allow the small television receiver placed at hand to receive a large television image at a distance. This provides a television reception system that allows remote control of channel selection, volume, etc.

Furthermore, the present invention provides a television reception system in which the images of both television receivers can be alternately exchanged by a switch provided on a small television receiver.

The present invention will be described below with reference to embodiments shown in the drawings.

In the embodiment shown in FIG. 1, the television receiver system of the present invention is constructed by combining two large and small television receivers 1 and 2. A remote control signal receiving section 3 is provided on the small-sized television receiver 2, and a remote control signal transmitting section 4 is provided on the small-sized television receiver 2. It is possible to select a channel on the small-sized television receiver 2, and also to perform channel selection, volume adjustment, etc. on the large-sized television receiver 1 by remote control. Furthermore, here, a video exchange switch 6 is specially provided in the operation key section 5, and the video currently being received by each television receiver 1, 2 is instantly replaced by the switch 6.

The large television receiver 1 used here is no different from the configuration of a normal television receiver with a remote control function, but the small television receiver 2 has a configuration as shown in FIG. It has a unique structure. That is, in FIG. 2, 7 and 8 are the same channel selection section and image receiving circuit section as those used in a normal television receiver, and in particular, 5, 9, and 10 constitute the television image receiving system according to the present invention. These are a new operation key section, a signal processing section, and a remote control signal transmitting section.

When an appropriate key operation is performed on the operation key section 5, this is processed in the signal processing section 9 and is sent to the channel selection section 7 based on the output signal A from the processing section 9.
is controlled, and at this time the small television receiver 2
Then, a predetermined channel is selected and received. When another appropriate key operation is performed, an output signal B is derived from the signal processing section 9 and supplied to the remote control signal transmitting section 10, from which a remote control signal is transmitted. Therefore, at this time, in the large television receiver 1, the signal is received by the remote control signal receiving section 3, whereby a predetermined channel is selected and received.

Note that here, remote control signal transmitter 1
The remote control signal transmitted from the transmitter 10 may be any one of light, ultrasonic waves, radio waves, etc., and the transmitter 10 and receiver 3 may be connected by wire and transmitted as an electrical signal.

Next, a more detailed block diagram of the signal processing section 9 is shown in FIG. 3, and the channel selection operation will be explained below. Here, the signal processing section 9 includes a data comparator 11, a timing signal generator 12,
ROM13, RAM14, data selector 15,
latch circuits 16, 17, and BCD output circuit 18,
Channel information corresponding to the reception channels of each receiver 1 and 2 is normally transmitted to the latch circuit 1.
It is held at 6,17.

If you now want to switch the reception channel of the small television receiver 1, turn on a predetermined channel selection key in the operation key section 5, and this input information will be transferred to the data comparator 1.
1, the program contents are compared with the program contents of the ROM 13 to determine various modes and operation signals, and then supplied to the data selector 15. At this time, predetermined channel information corresponding to the contents of the RAM 14 is sent from the data selector 15 to the latch circuit 16. is input. Therefore, at this time, an output signal A matching this channel information is derived from the BCD output circuit 18, and as a result, the small television receiver 2 is switched to the desired channel. Further, when switching the reception channel of the large television receiver 1, by turning on a predetermined channel selection key, predetermined channel information is inputted from the data selector 15 to the latch circuit 17 by a similar operation, and the output signal B is output from the BCD output circuit. is derived. As a result, the remote control signal section 10 transmits a remote control signal matching this channel information, and the reception channel of the television receiver 1 is switched to the desired channel.

Here again, the video exchange switch 6 of the operation key section 5
When turned on, the channel information held in the latch circuits 16 and 17 is exchanged based on a command from the data selector 15, and at this time, the channels being received by each receiver 18 and 19 are switched. As a result, the images on each receiver 18 and 19 are exchanged with each other.

In the above embodiment, a case has been described in which the channel selection of the large-sized television receiver 1 is remotely controlled by key operations on the operation key section 5 of the small-sized television receiver 2. It is also possible to remotely control volume adjustment, power on/off operations, etc.

<Effects> According to the television reception system of the present invention,
As mentioned above, two separate large and small television receivers are used in combination, with the large television receiver equipped with a remote control receiver and the small television receiver equipped with a remote control transmitter. Therefore, if you place a large TV receiver far away, and keep a small TV receiver nearby and use remote control as necessary, you can easily select channels and adjust the volume on the large TV receiver located far away. can be done.

Furthermore, according to the image receiving system of the present invention, by turning on the image exchange switch provided on the small-sized television receiver at hand at a desired time, the images on both receivers can be instantly exchanged, and the images of particular interest can be transferred to the large-sized television. It can be viewed on the Jiyoung receiver.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram for explaining a television reception system according to the present invention, FIG. 2 is a block diagram of a small-sized television receiver used in the system of the present invention, and FIG. 3 is a block diagram of the same small-sized television receiver. FIG. 2 is a more detailed block diagram of a signal processing section used in the receiver. DESCRIPTION OF SYMBOLS 1... Large television receiver, 2... Small television receiver, 3... Remote control signal receiving section, 4... Remote control transmitting section, 5... Operation key section, 6... Video exchange switch.

[Claims]

1. A switch means for inserting a blanking data signal having a partially approximately 0V level at both ends during the retrace period of the input video signal; an output signal of the switch means is supplied;
variable gain amplification means for applying gains of approximately 0, approximately 1, and desired values to the output signal according to second and third control voltages; and a rising portion of the video signal adjacent to the inserted blanking data signal; and the third control voltage from the first control voltage corresponding to the falling portion, respectively.
The blanking data signal has a signal portion that changes in a slope from the third control voltage to the first control voltage, and the second control voltage is applied to a portion of the blanking data signal that is not 0V. gain control signal generation means for supplying a gain control signal having a signal portion to the variable gain amplification means, and generating a video signal having a slope signal portion adjacent to the blanking data signal from the variable gain amplification means. A video signal processing circuit characterized in that: