JPH04156190A - Television system - Google Patents

Abstract

PURPOSE:To prevent disturbance, crosstalk and interference due to position adjustment of a transmission section or parallel provision of plural television systems by providing a reception section receiving a signal from a commander and the transmission section sending a signal to a headphone integrally to a television receiver. CONSTITUTION:Since a reception section of a commander and a transmission section 3 sending a signal to a headphone B are provided integrally to a television receiver A, the position of the transmission section is decided definitely through the installation of the television receiver A by fixing the transmission section 3 to an optimum position with respect to a pattern of the television receiver A and no position adjustment is required. Moreover, since the position between the reception section of the commander and the transmission section 3 to the headphone B is fixed, when a range of control by the commander and a listening range of the headphone are almost the same, each television receiver A is set so that the range of each television system is not interfered. Thus, disturbance, crosstalk and interference are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a television system that allows audio to be heard through cordless headphones.

[Summary of the Invention] The present invention provides a television system in which audio can be listened to through cordless headphones, by integrally providing a receiving section for receiving a signal from a commander and a transmitting section for transmitting a signal to the headphones in a television receiver. , the position of the transmitter is determined uniquely in relation to the screen of the television receiver, and there is no need to adjust the position of the transmitter. - is suitable for preventing interference, crosstalk, and interference when a family has multiple television systems.

[Prior Art] The applicant previously proposed a television system that allows the sound of a television receiver to be heard through cordless headphones, in harmony with Japan's residential environment and the increased sound quality associated with larger screens. (Refer to Japanese Unexamined Patent Publication No. 55-82596). This television system is configured so that a transmitting unit is connected to a television receiver, a receiving section is provided on headphones, and an audio signal is sent from the transmitting unit to the receiving section of the headphones by spatial transmission, so that the audio can be heard through the headphones. There is.

[Problems to be Solved by the Invention] However, in the conventional configuration, the television receiver and the transmitting unit are separate units, so the transmitting unit must be arranged in a certain direction due to the directivity of the transmitting section. No. Therefore, when installing a television system, etc., it is necessary to pay attention to the direction of the transmitting unit, and if the direction is changed for some reason, the sound will not be heard.

In addition, nowadays it is common to control television receivers with a commander, and it is better to have multiple televisions in one household or between adjacent homes, so that the control range of the commander and the range where audio can be heard through headphones are approximately the same. This is preferable for preventing jamming, interference and interference when the system is installed. However, while the conventional configuration has the advantage of allowing the placement position of the transmitting unit to be freely determined, the receiving range of the headphones differs depending on the placement position, resulting in disturbances, crosstalk, and interference due to the installation of multiple television systems. There is a risk of

SUMMARY OF THE INVENTION An object of the present invention is to provide a television television system suitable for adjusting the position of a transmitter and preventing interference, crosstalk, and interference caused by installing a plurality of television systems in parallel.

[Means for Solving the Problems] A television system of the present invention for achieving the above-mentioned problems is a television system having a television receiver, a commander, and headphones, in which the television receiver has a space from the commander. A receiving section for receiving a transmission signal is provided to control the television receiver using a control signal from the commander, while a transmitting section for spatially transmitting an audio signal is integrally provided to the television receiver, and the headphones are provided with a transmitting section for spatially transmitting an audio signal. A receiver is provided to receive the space transmission signal from the transmitter.

[Function] Since the commander receiving section and the transmitting section for the headphones are integrally provided in the television receiver, the television receiver can be installed by fixing the transmitting section at an optimal position in relation to the screen of the television receiver. This uniquely determines the placement of the transmitter and eliminates the need for position adjustment. In addition, since the positions of the receiver of the commander and the transmitter of the headphones are fixed, the range that can be controlled by the commander and the range that the audio can be heard through the headphones can be set at a distance to prevent interference with the range of each television broadcasting system. interference by setting each television receiver,
Can prevent crosstalk and interference.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1-4. The television system of this embodiment is a television receiver A.
, a commander (not shown), and headphones B. 1st
The figure shows a front view of the television receiver A, and FIG. 2 shows a perspective view of the headphones B. Since the commander has the same structure as a conventional well-known structure, a description thereof will be omitted.

In FIG. 1, a receiving section 2 for receiving a control signal from a commander and a transmitting section 3 for transmitting an audio signal to headphones B are provided below a screen 1 for a television receiver.

A circuit block diagram of the audio signal transmission system by the transmitter 3 is shown in FIG. 3, and the details will be described later.

In FIG. 2, the headphones consist of a headband part 4 and a pair of navel phone unit parts 6, 6 supported at both ends of the headband part 4 via hanger parts 5.5, and each of the headphones Speaker 7 inside unit part 6.6
(shown in FIG. 4) are incorporated respectively. A receiving section 8 for receiving audio signals from the transmitting section 3 of the television receiver A is provided at the top of the headband section 4. A circuit block diagram of an audio signal receiving system by the receiving section 8 is shown in FIG. 4, and details thereof will be described later.

In FIG. 3, an audio signal is input to an amplifier 10, and a gain adjustment section 11 is added to this amplifier 10. The output of the amplifier 10 is input to a PCM modulator 12, where the audio signal is PCM-modulated. The PCM-modulated audio signal is input to a drive circuit 14 after unnecessary signal components are removed by a low-pass filter 13 . This drive circuit 14
The semiconductor laser 15 of the transmitter is driven by the drive signal.

In FIG. 4, the output of the photodiode I6 of the receiver 8 of the headphones 8 is transmitted to the PCM demodulator 1 via an amplifier 17.
8 is entered. In this PCM demodulator 18, PCM
Unnecessary signal components are removed from the demodulated and PCM demodulated audio signal by a low-pass filter 19. The output of the low-pass filter 19 is amplified by an amplifier 20.
A gain adjustment section 21 is added to. This amplifier 20
The amplified audio signal is input to the speaker 7.

The transmission range of audio signals between the television receiver A and the headphones 8 is configured to match the transmission range of control signals between the television receiver A and a commander (not shown).

In the above configuration, if the television receiver A is installed at a position in the room where it can be easily viewed, the audio signal transmitter 3 will be placed opposite to the position where it can be easily viewed. There is always good signal transmission between the two.

In addition, since the range that can be controlled by the commander (not shown) and the range in which audio can be heard using headphones B are the same, if multiple television systems are installed in a home, the signal transmission range of each television system will interfere with each other. Can be easily installed to avoid interference between television systems,
Interference and interference can be easily prevented.

[Effects of the Invention] As described above, according to the present invention, in a television system in which audio is listened to through cordless headphones, the receiver unit that receives signals from the commander and the transmitter unit that transmits signals to the headphones are connected to the television receiver. Since it is integrated into the transmitter, the position of the transmitter is uniquely determined in relation to the screen of the television receiver, and there is no need to adjust the position of the transmitter.
Furthermore, by setting the range that can be controlled by the commander and the range where audio can be heard to be within the range, it is possible to prevent interference, crosstalk, and interference when a family has a plurality of television systems.

[Brief explanation of drawings]

1 to 4 show embodiments of the present invention, FIG. 1 is a front view of a television receiver, FIG. 2 is a perspective view of headphones, FIG. 3 is a circuit block diagram of an audio signal transmission system, and FIG. FIG. 4 is a circuit block diagram of the audio signal receiving system. A...TV receiver, B...headphones, 2.1l
l = receiving section, 3... transmitting section. Teshihiba Uke1Jt/J1i1o1ifi
3-1-“1 Figure 1 Figure 2

Claims (1)

[Claims] (1) In a television system having a television receiver, a commander, and headphones, the television receiver is provided with a receiving section that receives a spatial transmission signal from the commander, and a control signal from the commander is transmitted to the television receiver. , the television receiver is integrally provided with a transmitting section that spatially transmits an audio signal, and the headphones are provided with a receiving section that receives the spatially transmitted signal from the transmitting section. television system.