JP2010276949A - Karaoke system for digital-compatible television - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To synchronize the timing of karaoke video image display by a digital television apparatus which is connectable to a karaoke system, with the timing of karaoke performance sound production by a speaker system of the karaoke system. <P>SOLUTION: The karaoke system includes a guide melody signal output means 49a outputting a guide melody signal to the digital television apparatus 23; a singing-scoring means 47 (a delay level acquisition means 47a) performing singing scoring on a guide melody generated from a built-in speaker 23b of the digital television apparatus 23 by using guide melody data as a reference to obtain a delay (a delay level 44d) of the karaoke video image display timing specific to the digital television apparatus 23 to the performance sound production timing of a speaker 24, attached to a karaoke performance apparatus 11; a delay level storage means 51 making a HDD 44 store the delay level 44d; and a performance reproduction control means 49 performing reproduction delay control for karaoke performance. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a digital TV-compatible karaoke system capable of synchronizing karaoke video display timing in a digital TV apparatus connectable to a karaoke system and karaoke performance sound generation timing in a speaker system of the karaoke system.

  In recent years, digitalization of images in television has been promoted, and a change from terrestrial analog broadcasting to terrestrial digital broadcasting is scheduled. With such a change from analog TV to digital TV, synchronization between video display timing and audio generation timing has become a problem. That is, when the video signal and the audio signal are digitally processed, when the two are compared, the data amount of the video signal is large and the reproduction process is complicated, so that the video is delayed with respect to the reproduced audio.

  Therefore, conventionally, various techniques for synchronizing the video display timing and the audio generation timing have been proposed (see Patent Document 1). In the technology related to the video / audio processing system described in Patent Document 1, the video processing device and the amplifier device are connected by at least a video signal line and a control signal line. The video processing device processes the video signal supplied through the video signal line and forms a display video signal to be supplied to the display element, and the video signal supplied through the video signal line as the video signal. Providing means for providing processing time information indicating a processing time required for processing by the processing means and displaying the video corresponding to the video signal on the display screen of the display element through the control signal line; Yes. In addition, the amplifier device performs a predetermined process on the received audio signal and supplies it to the speaker, an acquisition unit that acquires processing time information from the providing unit through the control signal line, and an acquisition Delay processing means for delaying the audio signal supplied to the speaker by a time corresponding to the processing time information acquired by the means. Thereby, in a system in which an audio signal and a video signal are processed by different devices, a so-called lip sync shift can be prevented from occurring.

JP 2006-33436 A

  By the way, in the karaoke performance device, the generation timing of the karaoke performance sound generated from the speaker system is synchronized with the display timing of the video composed of the background video and the lyrics telop. Karaoke performance devices that are generally popular in karaoke stores often display video using a general-purpose TV monitor, not a dedicated monitor. Under such circumstances, as described above, when the terrestrial analog broadcasting is ended and only the terrestrial digital broadcasting is performed, the digital television monitor corresponding to the terrestrial digital broadcasting is also used in the karaoke shop.

  Therefore, the difference between the sound generation timing and the video display timing in karaoke performance becomes a problem. In other words, it is conceivable that the generation timing of the karaoke performance sound and the display timing of the background video and the lyrics telop are shifted. In particular, if the generation timing of the karaoke performance sound and the display timing of the lyrics telop are shifted, it becomes difficult to sing. The original function of the performance device is impaired.

  Therefore, it is desired to develop a karaoke system that can synchronize the display timing of karaoke video and the generation timing of karaoke performance sound generated from the speaker system in correspondence with a digital television monitor.

  The present invention has been proposed in view of the above-described circumstances, and it is possible to synchronize the karaoke video display timing in the digital TV apparatus connectable to the karaoke system and the karaoke performance sound generation timing in the speaker system of the karaoke system. An object is to provide a karaoke system compatible with digital TV.

  The digital television compatible karaoke system of the present invention has the following features in order to achieve the above-described object. That is, the digital TV-compatible karaoke system of the present invention is a digital TV-compatible karaoke system for synchronizing the karaoke video display timing in the digital TV apparatus connectable to the karaoke system and the karaoke performance sound generation timing in the speaker system of the karaoke system. The system includes guide melody signal output means, singing scoring means, delay value storage means, and performance reproduction control means.

  The guide melody signal output means is a means for outputting a guide melody signal for generating a guide melody from the built-in speaker to the digital television apparatus based on guide melody data of an arbitrary karaoke piece. The singing scoring means performs singing scoring on the guide melody generated from the built-in speaker with reference to the guide melody data of the karaoke music, so that the karaoke video display timing specific to the digital television apparatus with respect to the performance sound generation timing in the speaker system This is a means for obtaining a delay value that is a delay of. The delay value storage unit is a unit for storing the acquired delay value in a predetermined storage unit. The performance reproduction control means is means for performing control for delaying reproduction of the karaoke performance in the performance of an arbitrary karaoke piece.

  In the karaoke system for digital TV configured as described above, the guide melody signal output from the guide melody signal output means is input to the digital TV device, and the guide melody is generated from the built-in speaker. This guide melody is collected by a karaoke microphone attached to the karaoke performance device, and the function of the singing scoring means refers to the guide melody data as a reference, and the karaoke video unique to the digital television device with respect to the performance sound generation timing in the speaker system Get the delay value which is the delay of the display timing.

  In general, when the guide melody data directly input to the singing scoring means is compared with the guide melody generated from the built-in speaker of the digital TV apparatus and input to the karaoke microphone, the reproduction timing of the reference guide melody data is Instead, the input timing of the guide melody is delayed, and the singing scoring means detects this delay and acquires the delay value (see FIG. 4). The acquired delay value is stored in a hard disk storage device or the like by the function of the delay value storage means. Then, by performing the reproduction delay control of the karaoke performance by the function of the performance reproduction control means, the display timing of the karaoke video displayed on the monitor of the digital television apparatus and the generation timing of the karaoke performance sound generated from the speaker system are obtained. Synchronize.

  Further, in addition to the above-described configuration, a delay value presenting unit can be further provided. The delay value presenting means is means for presenting a delay value stored in a predetermined storage unit. In the karaoke system for digital television configured as described above, the delay value is displayed on the monitor of the digital television apparatus or the delay value reading voice is generated from the speaker by the function of the delay value presenting means.

  In the above-described configuration, the performance reproduction control means can be configured to perform automatic control for delaying the reproduction of the karaoke performance based on the stored delay value in the performance of any karaoke piece. . In the karaoke system for digital TV configured as described above, the playback delay control of the karaoke performance is automatically performed, so that the display timing of the karaoke video displayed on the monitor of the digital TV device and the karaoke performance generated from the speaker system are controlled. Synchronize the timing of sound generation.

  According to the digital TV-compatible karaoke system of the present invention, the guide melody data directly input to the singing grading means is used as a reference, and the singing of the guide melody generated from the built-in speaker of the digital TV apparatus and input to the karaoke microphone is performed. Thus, it is possible to acquire a delay value that is a delay of the karaoke video display timing specific to the digital television apparatus with respect to the performance sound generation timing in the speaker system. For this reason, the delay value in the monitor of a digital television apparatus is acquirable using the song scoring function which the existing karaoke performance apparatus has, without adding a special apparatus. Then, the reproduction of the karaoke performance is delayed based on the delay value, and the display timing of the karaoke video displayed on the monitor of the digital television apparatus is synchronized with the generation timing of the karaoke performance sound generated from the speaker system. It becomes possible.

  In addition, in the case where the delay value presenting means for presenting the acquired delay value is provided, the delay value can be easily grasped by a service person or the like, so that the delay value setting operation is facilitated. Furthermore, when the performance reproduction control means is configured to automatically perform reproduction delay control of karaoke performance, it is possible to save time and effort for setting a delay value by a service person or the like.

  In this way, even in a karaoke system that displays video using a general-purpose digital TV device instead of a dedicated monitor, the background video and lyrics telop displayed on the monitor of the digital TV device and the display timing of the color change The generation timing of the karaoke performance sound generated from the speaker system is not shifted, and the original function of the karaoke performance apparatus can be exhibited and the singing can be enjoyed.

The block diagram of the karaoke performance apparatus which applies the digital television corresponding karaoke system which concerns on embodiment of this invention. Explanatory drawing which shows typically the synchronous control process in the digital television corresponding karaoke system which concerns on the 1st Embodiment of this invention. Explanatory drawing which shows typically the synchronous control process in the digital television corresponding karaoke system which concerns on the 2nd Embodiment of this invention. Explanatory drawing of a delay value acquisition method.

  Embodiments of a digital TV-compatible karaoke system of the present invention will be described below with reference to the drawings. A digital TV-compatible karaoke system according to an embodiment of the present invention is a digital TV for synchronizing karaoke video display timing in a digital TV apparatus connectable to a karaoke system and karaoke performance sound generation timing in a speaker system of the karaoke system. The corresponding karaoke system includes guide melody signal output means, singing scoring means, delay value storage means, and performance reproduction control means as main components. Furthermore, it is possible to provide a delay value presenting means and a control value inputting means as additional components. FIG. 1 shows a configuration of a karaoke performance apparatus to which a digital TV compatible karaoke system according to an embodiment of the present invention is applied.

<Karaoke performance device>
As shown in FIG. 1, the karaoke performance device 11 according to the embodiment of the present invention includes a karaoke main body 21, a karaoke remote control device 22, a digital television device 23, a speaker 24, a mixing amplifier 25, and a karaoke microphone 26. In this embodiment, since the audio signal collected by the karaoke microphone 26 is used by the singing scoring means 47, the karaoke microphone 26 is connected to the A / D converter 50, and the analog audio collected by the karaoke microphone 26 is used. The signal is digitally converted and input to the karaoke main body 21.

<Karaoke remote control device>
The karaoke remote control device 22 has a user interface function, and transmits / receives data to / from the transmission / reception means 45 of the karaoke main body 21 by a wired method or a wireless method. The karaoke remote control device 22 includes a storage unit (not shown) including a program functioning as a music search unit 22a, a music index database 22b, an electronic circuit and program for transmitting and receiving data, a flash memory, and the like. Various operations such as a music selection operation are performed by operating switches attached to the karaoke remote control device 22 and various icons displayed on an input / output display unit (not shown).

<Music search means / music index database>
The music search means 22a is composed of a program for searching for music by referring to the music index database 22b based on a user instruction. The music index database 22b is a database in which attribute information about karaoke music used for performance by the karaoke performance device 11 is described. For example, the music number, song name, singer name, lyrics of the singing part, fashion season, music genre This includes various attribute information such as whether or not it is a category / duet song.

<Digital TV equipment>
The digital television device 23 is a device for receiving television broadcasts transmitted using digital modulation technology and digital compression technology, and includes a monitor 23a, a built-in speaker 23b, and a television amplifier 23c. When the delay value is acquired, the guide melody signal output from the guide melody signal output means 49a is input to the television amplifier 23c, and the guide melody amplified by the amplifier function is output from the built-in speaker 23b.

  The monitor 23a is a device for displaying a background video, lyrics telop, and the like at the time of karaoke performance. For example, the monitor 23a includes a CRT display, a liquid crystal display, a plasma display, and the like that perform video playback based on digital data.

<Karaoke body>
The karaoke main body 21 includes a central control means 41, ROM 42, RAM 43, HDD 44, transmission / reception means 45, reservation management means 46, singing scoring means 47, delay value acquisition means 47a, video reproduction control means 48, performance reproduction control means 49, guide melody. A signal output means 49a, an A / D converter 50, a delay value storage means 51, a delay value presentation means 52, and a control value input means 53 are provided. The delay value acquisition unit 47 a is configured by the function of the singing scoring unit 47, and the guide melody signal output unit 49 a is configured by the function of the performance reproduction control unit 49. The delay value presenting means 52 and the control value input means 53 are means necessary for manually inputting the delay value, and can be omitted when the delay value is automatically input.

<Central control means>
The central control means 41 is a means for comprehensively controlling the karaoke main body 21 and is constituted by, for example, a CPU and its peripheral devices. When the CPU or the like operates according to an application program stored in the ROM 42 or the like, The control function can be demonstrated.

<ROM / RAM>
The ROM 42 is a device for storing application program data and numerical data for controlling each device constituting the karaoke main body 21, and is configured by a semiconductor memory, for example. The RAM 43 functions as a temporary storage area for temporarily storing application programs and various types of data, and is composed of, for example, a semiconductor memory. Note that the virtual RAM 43 may be configured by using a hard disk storage device or the like instead of configuring the RAM 43 by a physical semiconductor memory. In the present embodiment, a reservation queue 43 a is stored in the RAM 43.

<HDD>
The HDD 44 functions as a large-capacity storage device, and stores a music database 44a, a video database 44c, and a delay value 44d unique to the digital TV device 23 connected to the karaoke main body 21. Note that a mass storage device such as a DVD capable of rewriting data may be used instead of the HDD 44 or together with the HDD 44.

  The music database 44a is a database that stores music data configured by synchronizing performance data (MIDI (registered trademark) data) and lyrics telop data in association with music IDs. The performance data is digitized performance data of each musical piece and includes guide melody data 44b. The lyrics telop data is lyric text data of karaoke music synchronized with the performance data. The lyric character data includes lyric character display color data, color change data, and the like. The video database 44c is a database that stores a predetermined number of background videos corresponding to karaoke songs to be played as video files corresponding to the song IDs of the karaoke songs.

<Transmitting / receiving means>
The transmission / reception means 45 includes an electronic circuit and a program for transmitting / receiving data between the karaoke main body 21 and the karaoke remote control device 22. In this embodiment, data transmission / reception is performed between the karaoke main body 21 and the karaoke remote control device 22 by infrared communication.

<Reservation management means>
The reservation management means 46 is composed of a program for attaching the user ID of the user to the song ID of the karaoke music selected by an arbitrary user and managing it in the reservation queue 43a. Specifically, a song is selected by an arbitrary user using the function of the music search means 22a, received via the transmission / reception means 45, the music ID is associated with the user ID of the music selector, and the reservation queue. 43a is stored in the RAM 43 and managed.

<Singing method for singing>
The singing scoring means 47 is composed of a program for performing singing scoring for each predetermined singing section for the singing of an arbitrary piece of music by the user. The singing scoring means 47 extracts singing evaluation data such as pitch, volume and tempo from the singer's voice signal input from the karaoke microphone 26 and digitally converted by the A / D converter 50, and the singing evaluation data and Scoring is performed by comparing with reference data such as the main melody of the performance music. The singing scoring method is described in detail in Japanese Patent Application Laid-Open No. 2007-121917.

<Delay value acquisition means>
Further, the singing scoring means 47 of the present invention is attached to the karaoke main body 11 by performing singing scoring on the guide melody generated from the built-in speaker 23b of the digital television apparatus 23 with reference to the guide melody data of the karaoke music. It has a function as a delay value acquisition means 47a for acquiring a delay value that is a delay of the karaoke video display timing inherent in the digital television device 23 with respect to the performance sound generation timing in the speaker 24.

  That is, in the karaoke system to which the digital television device 23 is connected, the reference melody data directly input to the singing scoring means 47 and the guide melody generated from the built-in speaker 23b and input to the karaoke microphone 26 are compared. The guide melody input to the karaoke microphone 26 is delayed from the guide melody data. Therefore, the delay value acquisition means 47a of the singing scoring means 47 can detect the delay of the guide melody input to the karaoke microphone 26 and acquire the delay value 44d in the karaoke system (see FIG. 4). ).

<Delay value storage means>
The delay value storage unit 51 is a unit for storing the delay value 44d acquired by the function of the delay value acquisition unit 47a in a storage unit such as the HDD 44. The delay value 44d stored in the HDD 44 is used for presentation by the delay value presenting means 51 or used for automatic reproduction delay control of karaoke performance by the performance reproduction control means 49.

<Delay value presentation means>
The delay value presenting means 52 includes a program for presenting the delay value 44 d stored in the HDD 44. For example, the delay value presenting means 52 displays the delay value 44 d stored in the HDD 44 on the monitor 23 a of the digital television device 23, or generates a read-out sound of the delay value from the speaker 24. As a result, when manually performing the delay value setting operation, the service person or the like can easily grasp the delay value. The delay value presenting means 52 is an additional component of the present invention.

<Control value input means>
The control value input unit 53 includes an electronic circuit and a program for inputting a control value set based on the delay value acquired by the delay value acquisition unit 47 a to the performance reproduction control unit 49. The control value input means 53 is a means used when setting a control value based on the delay value by manual operation of a serviceman or the like, and is an additional component of the present invention.

<Performance playback control means>
The performance reproduction control means 49 digitally reproduces performance data extracted from the music database 44a based on the music ID, converts it to analog, outputs it to the mixing amplifier 25, and reproduces the karaoke performance in the performance of any karaoke music. It consists of an electronic circuit and a program for performing control for delaying. The performance reproduction control means 49 has a function as a guide melody signal output means 49a.

<Guide melody signal output means>
The guide melody signal output means 49a is a functional means for outputting a guide melody signal for generating a guide melody from the built-in speaker 23b to the digital television device 23 based on guide melody data of an arbitrary karaoke piece. The television amplifier 23c that has received the guide melody signal performs amplification by the amplifier function and generates the guide melody from the built-in speaker 23b.

  Further, as a function of the performance reproduction control means 49, automatic control for delaying the reproduction of the karaoke performance based on the acquired delay value in the performance of any karaoke music piece may be performed. By the function of the performance reproduction control means 49, the karaoke video displayed on the monitor 23a by performing the synchronization control process (the reproduction delay process of the karaoke performance sound) using the delay value 44d peculiar to the digital television device 23. And the generation timing of the karaoke performance sound generated from the speaker 24 can be synchronized.

  The mixing amplifier 25 mixes the singer's singing voice signal input from the karaoke microphone 26 and the performance voice signal sent from the performance reproduction control means 49, and amplifies it by an amplifier function and outputs it from the speaker 24. It is a device for making it. In the present embodiment, it is preferable to perform control to stop the amplifier function of the mixing amplifier 25 in the sampling mode for acquiring the delay value. That is, during normal singing, the karaoke microphone 26 is directed toward the singer's mouth and is not directed toward the built-in speaker 23b and the speaker 24, so that howling is rarely a problem. However, in the sampling mode, when the guide melody is collected by the karaoke microphone 26, if the collected guide melody is amplified by the mixing amplifier 25 and generated from the speaker 24, the guide melody is input to the karaoke microphone 26. Returning to the mixing amplifier 25 may cause howling. In view of this, in the sampling mode, control that stops the amplifier function of the mixing amplifier 25 prevents the guide melody collected by the karaoke microphone 26 from returning to the mixing amplifier 25 and suppresses howling. can do.

<Video playback control means>
The video reproduction control means 48 uses the video data extracted from the video database 44c and the lyrics telop data (lyric character data) of the music data extracted from the music database 44a during the performance of the karaoke music as performance data of the karaoke music. It is an electronic circuit for outputting to the monitor 23a in synchronization with. At this time, the lyric characters are displayed in different colors as the performance of the karaoke musical piece progresses.

<Synchronous control processing>
With reference to FIG.2 and FIG.3, the synchronous control process in the karaoke system for digital television of this embodiment is demonstrated. FIG. 2 is an explanatory diagram showing a synchronization control process in the karaoke system for digital television according to the first embodiment of the present invention. Moreover, FIG. 3 is explanatory drawing which shows the synchronous control process in the digital television corresponding karaoke system which concerns on the 2nd Embodiment of this invention.

<First Embodiment>
The synchronization control processing in the digital TV-compatible karaoke system according to the first embodiment of the present invention is such that the delay value is set manually.
In the first embodiment, as shown in FIG. 2, the guide melody signal output from the guide melody signal output means 49a is input to the TV amplifier 23c of the digital TV device 23, amplified by the amplifier function, and built-in. A guide melody is generated from the speaker 23b. The guide melody is collected by the karaoke microphone 26 and input to the karaoke main body 21 via the A / D converter 50. Then, the function of the delay value acquisition means 47a of the singing scoring means 47 detects the delay of the guide melody with reference to the guide melody data 44b of the karaoke music piece, and acquires the delay value.

  As described above, when the guide melody data input directly to the singing scoring means 47 and the guide melody generated from the built-in speaker 23b and input to the karaoke microphone 26 are compared, the reproduction timing of the reference guide melody data 44b Rather than the input timing of the guide melody, it is delayed. Therefore, the delay value 44d in the karaoke system can be acquired by the function of the delay value acquisition means 47a based on the deviation of the input timing of the guide melody with respect to the playback timing of the guide melody data 44b.

  The delay value 44 d acquired by the delay value acquisition unit 47 a is stored in the HDD 44 by the function of the delay value storage unit 51. Thus, by storing the delay value 44d acquired by the delay value acquisition means 47a in the HDD 44, the delay value 44d once sampled can be used unless the digital television device 23 is replaced. This can be omitted (the same applies to the second embodiment).

  The delay value 44d stored in the HDD 44 is presented by the function of the delay value presenting means 52, and a service person or the like sets a control value based on the presented delay value 44d. The control value is input from the control value input means 53 to the performance reproduction control means 49, and is controlled by delaying the generation timing of the karaoke performance sound generated from the speaker 24 after being amplified by the mixing amplifier 25.

<Second Embodiment>
The synchronization control process in the digital TV-compatible karaoke system according to the second embodiment of the present invention automatically sets the delay value.
In the second embodiment, as shown in FIG. 3, the guide melody signal output from the guide melody signal output means 49a is input to the TV amplifier 23c of the digital TV device 23, amplified by the amplifier function, and built-in. A guide melody is generated from the speaker 23b. The guide melody is collected by the karaoke microphone 26 and input to the karaoke main body 21 via the A / D converter 50. Then, the function of the delay value acquisition means 47a of the singing scoring means 47 detects the delay of the guide melody with reference to the guide melody data 44b of the karaoke music piece, and acquires the delay value.

  The delay value 44 d acquired by the delay value acquisition unit 47 a is stored in the HDD 44 by the function of the delay value storage unit 51. The performance reproduction control means 49 performs automatic control for delaying the generation timing of the karaoke performance sound that is amplified by the mixing amplifier 25 and generated from the speaker 24 based on the delay value 44 d stored in the HDD 44.

<Other embodiments>
The devices and means constituting the digital TV-compatible karaoke system of the present invention and its peripheral devices are not limited to those described above. Depending on the purpose of use, only necessary devices or means may be configured, or other devices or Means can be added. Further, each unit may be configured as a unit in which a plurality of functions are integrated, instead of being configured separately.

<Network karaoke system>
Moreover, although embodiment mentioned above has shown the example which used the karaoke performance apparatus 11 stand-alone, the karaoke performance apparatus 11 installed in each karaoke store etc. is made into a terminal device, and a terminal device is used using an internet line etc. And a host device may be connected to the network. In this case, by centrally managing user IDs and the like in the host device, the same service can be provided in each karaoke performance device 11 connected to the network.

DESCRIPTION OF SYMBOLS 11 Karaoke performance apparatus 21 Karaoke main body 22 Karaoke remote control apparatus 22a Music search means 22b Music index database 23 Digital television apparatus 23a Monitor 23b Built-in speaker 23c TV amplifier 24 Speaker 25 Mixing amplifier 26 Karaoke microphone 41 Central control means 42 ROM
43 RAM
43a Reservation queue 44 HDD
44a Music database 44b Guide melody data 44c Video database 44d Delay value 45 Transmission / reception means 46 Reservation management means 47 Singing scoring means 48 Video reproduction control means 49 Performance reproduction control means 49a Guide melody signal output means 50 A / D converter 51 Delay value storage means 52 Delay value presenting means 53 Control value inputting means

Claims (3)

A karaoke system for digital TV for synchronizing karaoke video display timing in a digital TV device connectable to a karaoke system and karaoke performance sound generation timing in a speaker system of the karaoke system, and a guide melody signal output means; Singing scoring means, delay value storage means, performance reproduction control means,
The guide melody signal output means outputs a guide melody signal for generating a guide melody from the built-in speaker to the digital television device based on guide melody data of an arbitrary karaoke piece,
The singing scoring means performs singing on the guide melody generated from the built-in speaker with reference to the melody guide melody data of the karaoke music, so that the singing scoring means is specific to the digital television apparatus with respect to the performance sound generation timing in the speaker system. The delay value that is the delay of the karaoke video display timing of
The delay value storage means stores the acquired delay value in a predetermined storage unit,
The performance reproduction control means performs control for delaying the reproduction of the karaoke performance in the performance of any karaoke music piece,
A karaoke system compatible with digital TV. A delay value presenting means;
The karaoke system for digital television according to claim 1, wherein the delay value presenting means presents the stored delay value. The performance reproduction control means performs automatic control for delaying the reproduction of the karaoke performance based on the stored delay value in the performance of an arbitrary karaoke piece.
The karaoke system for digital television according to claim 1 or 2.

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