DESC:TECHNICAL FIELD
The present disclosure relates to field of television audio signal transmission.
BACKGROUND
Television (TV) is one of the most widely used medium for entertainment and knowledge sharing. Various modes of audio reception from the Television are loudspeakers, wired headphones, wired home theater system and wireless home theater system. Typically, loudspeakers installed in the TVs are used for listening to the audio associated with the TV broadcasts. Even though televisions designed in recent years provide slim and slick looks, they restrict manufactures to use a limited space for installing loudspeakers, which finally affects the audio quality. This problem is usually addressed by connecting a TV to a home theater system, which requires either significant cabling or purchasing a significantly overpriced wireless home theater system. Additionally, in case of families which possess a single television set, if only one person wants to watch the television that person may disturb other members of the family, or he/she may need to lower the volume, which may further affect the quality of entertainment. The common solution employed for this kind of problem is to use wired headphones, but, the wired headphones force viewers to stay within a specific distance from the TV sets.
To limit the aforementioned drawbacks, there is a need for a system that provides wireless transmission and reception of television audio signals.
OBJECTS
An object of the present disclosure is to provide a system for wireless transmission of TV audio signals.
Another object of the present disclosure is to provide a system that uses available customer resources for creating a wireless system for wireless transmission of TV audio signals.
Still another object of the present disclosure is to provide a system that monitors an individual’s TV watching behavior.
An additional object of the present disclosure is to provide a system that provides a cost effective wireless home theater connection.
Other objects and advantages of the present disclosure will be more apparent from the following description when read in conjunction with the accompanying figures, which are not intended to limit the scope of the present disclosure.

SUMMARY
The present disclosure related to a computer implemented system and method for wireless transmission of television audio signals. In an embodiment, the system of the present disclosure includes a first repository that stores a set of rules and a processor that generates a set of commands based on these rules. These commands are provided to different modules in the system. The system also includes a transmitting device for wirelessly transmitting audio signals from television sets and a receiving device to receive these audio signals wirelessly. The transmitting device includes an audio receiver coupled to the television set to receive audio signals from the television set. The transmitting device further includes a frequency scanner that scans the FM frequency band and identifies a set of available frequencies from the FM frequency band. Based on the set of identified available frequencies and pre-determined factors, a frequency suggestor suggests suitable frequencies. A frequency selector then selects a carrier frequency from the suitable frequencies based on performance comparison. The transmitter module further includes a frequency modulator that performs frequency modulation on the carrier frequency based on the audio signals to obtain frequency modulated signals. These frequency modulated signals are then wirelessly transmitted by an FM transmitter. An FM receiver present in the receiving device wirelessly receives the frequency modulated signals. The receiving device includes a tuner that cooperates with the transmitter device to identify the carrier frequency and automatically tune the receiving device to the same carrier frequency. A frequency demodulator then demodulates the frequency modulated signals using the selected carrier frequency to obtain demodulated audio signals. The receiving device also includes a loudspeaker that converts the demodulated audio signals into sound thereby enabling the users to wirelessly receive television audio signals.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
The system and method for wireless transmission of television audio signals will now be described with reference to the accompanying drawings, in which:
Figure 1 illustrates a schematic of an embodiment of the system for wireless transmission of television audio signals; and
Figure 2 illustrates a method for wireless transmission of television audio signals.
DETAILED DESCRIPTION
The system and method of the present disclosure will now be described with reference to the embodiment shown in the accompanying drawing. The embodiment does not limit the scope and ambit of the disclosure. The description relates purely to the examples and preferred embodiments of the disclosed system and its suggested applications.
The system herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known parameters and processing techniques are omitted so as to not unnecessarily obscure the embodiment herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiment herein may be practiced and to further enable those of skill in the art to practice the embodiment herein. Accordingly, the examples should not be construed as limiting the scope of the embodiment herein.
To overcome the limitations of home theatre systems, a user may use wired headphones. But, the wired headphones impede movements of the viewers. To limit the drawbacks associated with these conventional TV audio systems like home theatres and wired headphones, a user may use infrared headphones or RF wireless headphone. The infrared headphones operate by transmitting a beam of light in the infrared frequency band. Therefore, for a successful transmission and reception using infrared headphones, the transmitter and receiver must always be in line of sight of each other. This restricts viewer’s movements. The RF wireless headphones use RF technology for transmission and reception and typically operate in 800-900 MHz band. In these types of headphones, interference is usually caused if other devices using same technology or same/similar frequency are present within a specific range of the RF wireless headphones. Additionally, these headphones are more susceptible to interference as compared to the Infrared headphones.
The present disclosure provides a computer implemented system that uses lower frequencies within the FM band for transmission and reception of audio signals. Frequency selection is done by the system such that there is no interference with other transmissions. The system also allows users to select transmission frequencies from available frequencies.
The disclosure will now be described with reference to the accompanying non-limiting drawings which illustrate one embodiment of the computer implemented system for wireless transmission of television audio signals.
Referring to the accompanying drawings, Figure 1 illustrates a schematic of an embodiment of the system 100 for wireless transmission of television audio signals. The system 100 includes a first repository 102 that stores a set of rules and a processor 104 that uses these rules to generate a set of commands for achieving wireless transmission. These commands are provided to other modules in the system 100. In one embodiment, the structure of the first repository 102 includes a receiver and a hardware register. The receiver receives rules from external sources and stores them in the hardware register. The rules are permanently stored in the hardware register unless they are explicitly erased. The system also includes a transmitting device 106 and a receiving device 120. The transmitting device 106 wirelessly transmits the audio signals from a television set 101 and the receiving device 120 receives these signals and coverts them in sound for a plurality of users. The television set 101 generates a variety of audio signals. These signals are received by an audio receiver 108 present in the transmitting device 106. The audio receiver 108 receives the audio signals wirelessly or through a wired connection. In one embodiment, the structure of the audio receiver 108 includes an antenna which receives audio signals from television sets. In another embodiment, a wired connection is provided between the audio receiver 108 and the television set 101 to enable the audio receiver 108 to receive the audio signals from the television set 101. The transmitting device 106 also includes a frequency scanner 110, a frequency suggestor 112, a frequency selector 114, a frequency modulator 116 and an FM transmitter 118. In one embodiment, the transmitting device 106 is installed in the television set 101.The frequency scanner 110 present in the transmitting device 106 scans the FM frequency band and identifies a set of available frequencies from the FM frequency band. Numerous radio stations use different frequencies within the FM frequency band for transmitting radio signals. Considering this, the frequency scanner 110 scans the FM band to identify the frequencies that are not being used. Such frequencies form a set of available frequencies. In one embodiment, the structure of the frequency scanner 110 includes an FM band selector and a scanner. The FM band selector selects range of frequencies that need to scanned (in this case the frequencies that lie in the FM band) and the scanner scans the complete range to identify frequencies that are not being used. Based on the set of available frequencies and pre-determined factors, the frequency suggestor 112 suggests suitable frequencies. The pre-determined factors include minimum interference, less power requirement and the like. The frequency suggestor 112 checks from the set of available frequencies, the frequencies that cause minimum interference with neighboring frequencies and also those that require less power during transmission. Based on such similar factors, the frequency suggestor 112 suggests suitable frequencies. In one embodiment, the structure of the frequency suggestor 112 includes a comparator and an identifier. The comparator compares the available frequencies and the identifier identifies suitable frequencies having minimum interference and less power requirements. The frequency selector 114 then selects a carrier frequency from the suitable frequencies based on performance comparison. In one embodiment, the frequency suggestor 112 suggests five suitable frequencies and the frequency selector 114 compares performances (like audio clarity) at the suggested frequencies to select one carrier frequency. In another embodiment, the frequency suggestor 112 suggests five frequencies which are not preoccupied and then based on their performance a user chooses one frequency from the suggested frequencies for transmission. In one embodiment, the structure of the frequency selector 114 includes a determiner and a comparator. The comparator compares performance (audio quality etc.) at various suggested frequencies and the determiner determines a carrier frequency from the suggested frequencies based on the comparison. In another embodiment, the structure of the frequency selector 114 includes an input module that accepts from users, one carrier frequency from the suggested frequencies. Once the carrier frequency is selected, the frequency modulator 116 performs frequency modulation on the carrier frequency based on the audio signals received by the audio receiver 108 to obtain frequency modulated signals. In one embodiment, the structure of the frequency modulator 116 includes a receiver, an integrator and a modulator. The receiver receives the audio signals and the carrier frequency, the integrator integrates the audio signals and the modulator modulated the carrier frequency based on the integrated audio signals. The frequency modulated signals are wirelessly transmitted to the receiving device 120 by the FM transmitter 118. In one embodiment, the structure of the FM transmitter 118 includes a receiver and a transmitting antenna. The receiver receives the frequency modulated signals and the transmitting antenna wirelessly transmits these signals. Each receiving device 120 includes an FM receiver 122, a tuner 124, a frequency demodulator 126 and a loudspeaker 128. The FM receiver 122 cooperates with the FM transmitter 118 from the transmitting device 106 to wirelessly receive the frequency modulated signals. In one embodiment, the structure of the FM receiver 122 includes a receiving antenna to wirelessly receive the frequency modulated signals. The tuner 124 present in the receiving device 120 identifies the carrier frequency used by the transmitting device 106 and automatically tunes the receiving device 120 to the same carrier frequency. In one embodiment, the tuner 124 allows manual tuning. The frequency demodulator 126 demodulates the frequency modulated signals received by the FM receiver 122 using the selected carrier frequency to obtain demodulated audio signals. In one embodiment, the structure of the frequency demodulator 126 includes a receiver and a demodulator. The receiver receives the carrier frequency and the frequency modulated signals and the demodulator demodulates the frequency modulated signals to obtain audio demodulated signals. The demodulated audio signals are then provided to the loudspeaker 128 which converts the demodulated audio signals into sound to enable the users to wirelessly receive and listen to the television audio signals. In one embodiment, the structure of the loudspeaker 128 includes an amplifier to amplify the audio signals, a converter to convert these signals in sound and the speaker to provide the sound output.
In one embodiment, the receiving device 120 is a device selected from the group consisting of headphones, cellular phones, home theater and the like, for listening to the audio associated with the TV broadcast. In an embodiment, a user can use a headphone attached to a mobile phone to wirelessly receive audio signals associated with TV broadcast.
The system 100 of the present disclosure, allows users to set wireless power range (transmission range). In one embodiment, the users can select transmission range from a group of ranges including 5Mtr, 8Mtr, 10Mtr and the like. The system 100 may also allow users to assign names to wireless transmission channels which may be displayed on the receiving device for ease of user selection.
According to another embodiment of the present disclosure, the receiving device 120 is a cellular phone which is used for monitoring television watching behavior of an individual, by listening to the audio associated with the TV broadcast. In yet another embodiment, the system 100 simultaneously transmits audio signals from the television set 101 to multiple users.
In an embodiment, FM setup that is already provided in cellular phones can be used as a tuner to tune the cellular phone to an appropriate carrier frequency.
Figure 2 of the accompanying drawings illustrates a method 200 for wireless transmission of television audio signals. The method 200 includes a step of storing a set of rules and generating a set of commands based on the rules 202. These generated commands are then provided to different modules for integrating and presenting information. The method 200 includes step of receiving audio signals from a television set 204. These audio signals are frequency modulated before transmission. In order to modulate the audio signals, the method 200 includes scanning the FM frequency band and identifying a set of available frequencies from the FM frequency band 206. On identifying a set of available frequencies, the method 200 includes steps of suggesting suitable frequencies from the set of identified available frequencies based on pre-determined factors 208 and selecting a carrier frequency from the suitable frequencies based on performance comparison 210. The method 200 further includes steps of performing frequency modulation on the carrier frequency based on the audio signals to obtain frequency modulated signals 212 and wirelessly transmitting the frequency modulated signals 214. The method 200 then includes receiving the wirelessly transmitted frequency modulated signals 216 and identifying the carrier frequency used by the transmitted signals for automatically tuning a receiving device to the same carrier frequency 218. On tuning the receiver device, the method includes 200 demodulating the frequency modulated signals using the selected carrier frequency to obtain demodulated audio signals 220 and converting the demodulated audio signals into sound to enable the users to wirelessly receive television audio signals 222.
The method 200 further includes steps of determining and suggesting from the set of identified available frequencies, suitable frequencies that satisfy pre-determined factors including minimum interference and less power requirement. It further includes a step of accepting carrier frequencies selected by users and a step of providing manual tuning. The method 200 also includes step of simultaneously transmitting audio signals from a television set to a plurality of users.
TECHNICAL ADVANCEMENTS
A system and method for wireless transmission of television audio signals in accordance with the present disclosure describe herein above has several technical advancement including but not limited to the realization of:
• a system that provides wireless transmission of TV audio signals;
• a system that uses available customer resources for creating a wireless system for wireless transmission of TV audio signals;
• a system that monitors an individual’s TV watching behavior; and
• a system that provides a cost effective wireless home theater connection.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein. ,CLAIMS:1. A computer implemented system for wireless transmission of television audio signals, said system comprising:
a first repository configured to store a set of rules;
a processor configured to cooperate with the first repository to receive the set of rules and generate a set of commands based on said rules;
a transmitting device configured to cooperate with the processor and a television set to receive and process audio signals based on the set of commands, said transmitting device comprising:
an audio receiver coupled to the television set and configured to receive audio signals from the television set;
a frequency scanner configured to scan the FM frequency band and identify a set of available frequencies from the FM frequency band;
a frequency suggestor configured to cooperate with the frequency scanner to receive the set of identified available frequencies and further configured to suggest suitable frequencies from the set of identified available frequencies based on pre-determined factors;
a frequency selector configured to cooperate with the frequency suggestor to receive suggested suitable frequencies and further configured to select a carrier frequency from the suitable frequencies based on performance comparison;
a frequency modulator configured to cooperate with the audio receiver and the frequency selector to receive the audio signals and the selected carrier frequency, and further configured to perform frequency modulation on the carrier frequency based on the audio signals to obtain frequency modulated signals;
an FM transmitter configured to cooperate with the frequency modular to receive the frequency modulated signals and further configured to transmit the frequency modulated signals wirelessly;
and
a receiving device configured to cooperate with the processor and the transmitting device to wirelessly provide television audio signals to a plurality of users, said receiving device comprising:
an FM receiver configured to cooperate with the transmitting device to wirelessly receive the frequency modulated signals;
a tuner configured to cooperate with the transmitter device to identify the carrier frequency and further configured to automatically tune the receiving device to the same carrier frequency;
a frequency demodulator configured to cooperate with the FM receiver and the tuner, and further configured to demodulate the frequency modulated signals using the selected carrier frequency to obtain demodulated audio signals;
a loudspeaker configured to cooperate with the frequency demodulator to obtain demodulated audio signals, and further configured to convert the demodulated audio signals into sound thereby enabling the users to wirelessly receive television audio signals.

2. The system as claimed in claim 1, wherein said transmitting device determines and suggests from the set of identified available frequencies, suitable frequencies that satisfy pre-determined factors including minimum interference and less power requirement.

3. The system as claimed in claim 1, which allows users to select carrier frequencies.

4. The system as claimed in claim 1, wherein said transmitting device is installed in a television set.

5. The system as claimed in claim 1, wherein said tuner provides manual tuning.

6. The system as claimed in claim 1, which simultaneously transmits audio signals from a television set to a plurality of users.

7. A computer implemented method for wireless transmission of television audio signals, said method comprising the following:
storing a set of rules and generating a set of commands based on said rules;
receiving set and processing audio signals based on the set of commands, said receiving and processing further comprising the following:
receiving audio signals from a television set;
scanning the FM frequency band and identifying a set of available frequencies from the FM frequency band;
suggesting suitable frequencies from the set of identified available frequencies based on pre-determined factors;
selecting a carrier frequency from the suitable frequencies based on performance comparison;
performing frequency modulation on the carrier frequency based on the audio signals to obtain frequency modulated signals;
transmitting the frequency modulated signals wirelessly;
and
providing television audio signals to a plurality of users, said step of providing comprising the following:
receiving the wirelessly transmitted frequency modulated signals;
identifying the carrier frequency used by the transmitted signals and automatically tuning a receiving device to the same carrier frequency;
demodulating the frequency modulated signals using the selected carrier frequency to obtain demodulated audio signals;
converting the demodulated audio signals into sound to enable the users to wirelessly receive television audio signals.

8. The method as claimed in claim 7, which includes determining and suggesting from the set of identified available frequencies, suitable frequencies that satisfy pre-determined factors including minimum interference and less power requirement.

9. The method as claimed in claim 7, which includes step of accepting carrier frequencies selected by users.

10. The method as claimed in claim 7, wherein said tuning is manual.

11. The method as claimed in claim 7, which includes step of simultaneously transmitting audio signals from a television set to a plurality of users.