JP2001505393A - Videotape and device for reproducing the videotape - Google Patents

Abstract

(57) Abstract Pre-recorded videotapes have subtitles and / or audio channels in several different languages that are encoded as standard teletext packets. In order to make them playable by VHS recorders, they are coded at low data rates using, for example, four-level multi-level codes. As a result, a single tape can be distributed over a wide geographic area, such as Europe, where many languages are spoken, with the tape containing multiple subtitle pages, one for each language, And / or carry the AUDTEL channel. The user can select a desired language during reproduction.

Description

DETAILED DESCRIPTION OF THE INVENTION Videotape and device for reproducing the videotape Technical field   The present invention relates to a VHS videotape and an apparatus for playing the videotape. Related. Background art   In culturally diverse areas like Europe, prerecorded videos for different languages Creating different versions of the videotape is expensive. In the same content As many as 10 different versions are available in the required language or captions Soundtrack with subtitles added to the video as (subtitles) It may be required to be dubbed on. Make sure that the proper Version distribution is usually by geographical area, i.e. French tape In Reims, German tapes go to Germany, and so on. Is not always ideal for all potential audiences. Countries have many There may be an immigrant population, or several languages may be spoken in the same territory It is not. All these factors are significant in the production and distribution path This has the cost, but has the desired language selected by the user during playback. If it is possible to have only one version of the prerecorded tape, the savings would be It should be possible.   French Patent Application No. 2586879 discloses several versions of a single tape. It discloses a process that makes it possible to record subtitles. The subtitle supermarket is The image is measured and transmitted. The numerical data representing the subtitle supermarket is Form of recording on one of the soundtracks of a stereo video recorder or consumer goods Use subcarriers for recording on soundtracks of mono video recorders It is modulated in a format compatible with the recording format used. The data is the number It is recorded at an instantaneous rate lower than the rate of the value data. The device is the receiver S Connected to CART socket, used for display interface and broadcasting Interface box consisting of a demodulator for teletext May be included. Disclosure of the invention   It is an object of the present invention to provide subtitles (captions) in many different languages or different languages. Allows the provision of pre-recorded video tapes containing sound channels, What is more, it allows the selected language to be used for playback.   The present invention ensures that the required format and standard VHS video recorder With higher data rates than can be recorded and played back to A VHS videotape carrying a data signal, said data signal comprising an original Lower than that of the null data signal and within the bandwidth of the VHS recorder Encoded as a multi-level signal having a data rate, wherein the data signal is , Conversations in different languages or different versions of the same language A plurality of data streams to represent the data signal. VHS video tape synchronized with the video program recorded on the tape I will provide a.   The data may take the form of a teletext signal, Reams include teletext pages in which conversations in each language are contained on pages of a predetermined number. Page.   Applicant's co-pending UK patent application 9605614. No. 8 (PH B34056), using multi-level codes as disclosed in Teletext or other text on the VHS tape to reduce the data rate It is possible to record data signals. Therefore, teletext data is broadcast To digital terrestrial television in the UK The one sent by the proposed subtitle super processing system to be attached It is possible to record on the tape at the same information rate. Teletext subtitles Subtitles in super (subtitle) or other formats related to broadcast transmission Super (subtitles) are usually provided in only one language for the hearing impaired However, it is also possible to provide subtitles in many languages for the general audience. The language is to select the appropriate page number on the Teletext TV receiver Allows user selection.   Subtitles are relatively short, typically only one or two lines of text and last for a few seconds. They use only a small amount of data since they are updated every time. Typically, For teletext format data, four data packets per second That's enough for subtitles in two languages. Applicant's co-pending application The device disclosed in US Pat. With a capacity of 800 data packets per second, characters in many languages It turns out that curtains are possible on prerecorded tapes. This will Even if you need to accurately synchronize subtitles is there.   Such subtitles may be provided by media producers, tape distributors, or independent companies. Created. This caption is similar to that used by teletext broadcasters Is created on a specific subtitle processing device. That same subtitle super processing Equipment used to create subtitles in different languages one language at a time Is possible. Alternatively, various subtitle super processing systems may Can be used to create subtitles for each language in various places Noh. In either or both of these methods, complete all subtitles A complete database can be built for the specific video content of the tape. It is possible.   When tapes are duplicated for production, their subtitle data is Encoding device that reads information from the source and uses different page numbers for each language Can be added to the tape.   The present invention further provides for the use of a predetermined format and a standard VHS video recorder. Higher data rates than can be reliably recorded and played back For reproducing a VHS videotape carrying a data signal having . The data signal has a lower data rate than that of the original data signal. The device is encoded as a multi-level signal that has Re The data signal is decoded and a data signal of a predetermined format is generated from the decoding result. Decoder, data decoder, and decoding process by the data decoder For selecting a data stream for playback and means for playing subtitles And   In one form, the data decoder may be a teletext decoder The data stream can be a predetermined teletext page.   When a viewer tries to play the tape, the viewer Or an index that describes available functions from information on reprinted paper (inserts) From the Teletext page on the Teletext TV receiver in the desired language Select a page number. The circuit in the recorder is The encoded data is converted to a standard teletext format, and the subtitles are Provided that the teletext TV has the ability to display the language, The language can be displayed on the television screen. Europe In modern situations, state-of-the-art teletext decoders offer features for a wide range of languages have. More generally, as the technology becomes cheaper, it becomes more extensive. There is a trend towards more language and geographic coverage (coverage or coverage). example A Chinese teletext decoder could cover not only Chinese but also English Is common.   Creating subtitles in different languages for each teletext page is essential is not. For example, to make a special prerecorded tape for language education , Subtitles can be made in various languages, but also in the same language Different subtitle streams can be provided at different page numbers. You. Viewers can then choose the most appropriate one for their needs become. For example, simple subtitles that provide basic meaning at slow speed Can be provided for early learners of other languages, or More comprehensive subtitles with faster speeds to provide a clearer understanding of the language It can be useful for those who have. The technology is not necessarily It is not limited to the display of typical subtitles, which are several lines of text overlaid on e. At an optional point in the conversation, the whole or part of the screen All of All text may be included, and The difficulty of the language can be selected by the viewer. Another possibility The gender is to mix those languages into the same subtitle stream. First one Language appears, followed by a translation, for example below it. All these options How subtitles are created by media providers Available, depending on the extent to which they provide a significant range for creative creativity It is.   The conversation is encoded using speech description code to be played by a speech synthesizer. It may be encoded.   An audio description code called AUDEL is, for example, "Bill is frowning on Ann. Face-to-face through the door. " Visually impaired, providing an explanation of what is going on in the program Designed to provide additional or supplemental audio channels for viewers It is. The AUDTEL system uses teletext format data. It works by sending it to a speech synthesizer built into the television, The output of the voice synthesizer can be added to the television sound. Said A For a description of the UDETEL system, please refer to the IEEE expert meeting's newsletter: "Time between pictures −Time between Pictures-The Vertical Blanking Interval ) ", IEEE Digest 1994/016. G. FIG. W. Pledge ( J. G. W. Pledge) "AUDETEL audio description service for the visually impaired (The AUDETEL Audio Description Service for Visually Impaired People) " In a document titled.   The present invention is an extension of a speech description system such as AUDETEL in two ways. To be able to First, one or more audio channels are made available. Second, the selected audio channel may be It can be heard not only in gaps, but instead of standard audio You.   The AUDETEL system uses teletext encoding in packet format. Method, and consequently, it is added to allow for different languages Can be extended with a generic data field. Hamming coded buffer The 4-bit is a 4-bit that allows independent recognition codes for 16 different languages. It produces data, which is sufficient for most purposes. One The capacity required for a language depends on its speech synthesis algorithm and the required speech quality. And depends on. Currently only one AUDEL is proposed per frame Data packets, ie 25 packets per second, but higher voice The quality is expected to be suitable for multiple language audio descriptions, and Use one data packet, ie 50 data packets per second. It has been proposed. This data recording system has 800 packets per second This means that up to 16 languages can be recorded on one videotape. Allowed to be recorded. Teletext extensions for codes representing voice conversations If a system such as AUDETEL is used that uses The teletext decoder uses only the packets that form the displayed page Need to be able to capture and decode extended packets as well. Such teletext Strike decoders are currently commercially available from major teletext decoder manufacturers. I can do it.   The AUDTEL system uses the AUDTEL audio channel as a standard Mechanism for fading in and out of complex TV audio signals Having. This concept is based on the fact that the AUDETEL audio signal To allow them to appear between gaps in the conversation to explain Rather than being used to replace standard conversations with selected languages It is also possible. As for the choice of the desired language for the audio description, many possibilities Sex exists. Three examples of possible methods are shown below. First The possibility is to select the display generated by the TV software on the screen Is used to guide the user to a given language. Second option Is the language number on the teletext index page recorded on the tape. Issue (or number of languages). And the user can Page number selection or use the Fasttext or TOP color buttons To select the required page for the desired language, and then Download the language number from the link on page 27 to the channel of the audio description decoder. Press the key to load. A third feasible method is that the language option is teletext And move the cursor to the desired position in a PDC-like manner And then downloading the language selection. One example of such a device is a VCR setup that records the desired program. And European Patent Application Publication No. EP-A-030056. No. 2 (PHB33373).   This audio description encoding in the various languages of the tape is used to And can be used for both purposes, for ordinary speech description . That is, the conversation on tape can be encoded purely as a speech description code. And can replace ordinary audio signals. Its speech description decoder The actual location of the device should be in the VCR rather than the TV, but any In that case, their control methods are substantially the same. As with subtitles, it The creative use of these features can be exchanged as well as in various languages for educational purposes It is also possible to present possible types of conversation.   Therefore, the function of data recording with the addition of certain additional circuits for audio description Allows users to select the dubbed language and / or subtitles It is possible to provide pre-recorded videotapes with special This alone is sufficient for a wide range of languages in a wide geographic area.   The above features and advantages and other features and advantages of the invention are illustrative of the invention. BRIEF DESCRIPTION OF THE DRAWINGS From the following description of embodiments of the present invention, with reference to the accompanying drawings, in which: Will be clear. BRIEF DESCRIPTION OF THE FIGURES   FIG. 1 shows a standard broadcast teletext signal and a VHS recorder for this signal. And shows the effect of limited bandwidth.   FIG. 2 shows a broadcast teletext signal suitable for recording and reproduction in a VHS recorder. 4 shows a four-level code representing a symbol.   FIG. 3 shows a part of the signal shown in FIG. 2 on an enlarged time scale. I have.   FIG. 4 is a schematic block diagram of an apparatus for reproducing a VHS video tape according to the present invention. Indicated by.   FIG. 5 and FIG. 6 show reproduction subtitles using the apparatus shown in FIG. The selection content of the audio description is shown. BEST MODE FOR CARRYING OUT THE INVENTION   FIG. 1 shows a standard teletext signal as received by a receiver ing. The data rate of the teletext signal is 5 MHz or more, and the result is Thus, such a signal is based on the VHS standard with a channel bandwidth of about 3 MHz. After passing through such a video recorder, distortion will occur. FIG. 1b shows the How the teletext signal depends on the channel bandwidth of a typical VHS recorder It is shown whether it is acted on. The initial clock introduction information is Such signals are decoded by a standard teletext decoder during playback. It turns out that it becomes impossible to issue. To overcome this problem, the applicant's co-pending application UK Patent Application 9605614. No. 8 (PHB34056) is standard Multi-level with a lower data rate than that of Disclose the use of the default code.   FIG. 2 shows teletext data encoded by four amplitude level codes Is shown. Such an initial clock introduction unit provides a lower frequency clock. Frame introduction (framing) code Code and data are replaced by the four levels of code. In this example, The four levels are four amplitude levels, so that each data period Here, two bits can be encoded, and the four levels are 00, 01 , 10 and 11 are displayed. As a result, the multi-level code This re-encoded teletext signal is now referred to as a standard teletext signal. Has a data rate that is half that of the It fits.   FIG. 3 shows the initial part of a teletext line using the multi-level code. Is shown on an enlarged time scale, and the frame indication code and data are 2 shows the clock introduction cycle in the present embodiment. In this example, the clock Clock frequency is set to half that of the standard teletext clock frequency Is done.   Therefore, the method of recording teletext data on the tape disclosed in the above patent application The method converts teletext data generated at a standard rate into the standard teletext data. The step of converting to a multi-level code with a lower data rate than that of the signal Have. The multi-level code is then supplied to the recording device and the Data can be recorded on the tape. In a particular embodiment, four Bell amplitude codes are used, and the data rate is It is half of the issue. If an 8-level code is used, the data rate is , Can be reduced to one third of the data rate of the standard teletext. this is , Eight levels of code, each data period allows three bits of encoding This is because that. The use of multi-amplitude level codes is a standard telecommunications This is preferable because it simplifies the data restoration by the text decoder, but it has many differences. Use multi-level codes containing different phases, or It is also feasible to use combinations.   In playback, this multi-level code is read from the tape and recorded It is converted to standard teletext data by the reverse operation of time conversion. This data Could then be sent to the teletext encoder, where the teletext Stream data can be reconstructed with the video signal sent to the associated television receiver Becomes Recording and playback of teletext data in this format using a VHS recorder The entire process is described in the above-mentioned applicant's co-pending application, Ikiris Patent Application. And its contents are incorporated herein by reference.   In the text of this application, teletext refers to World System Teletext. (World System Teletext). In the system, the teletext data is recorded or recorded by a standard VHS recorder. It has a binary data rate that is too high to play. 1 to 3 The above description with reference to the figures described the recording and subsequent reproduction of a teletext signal. Also However, the teletext data encoded by this procedure is It should also be clear that it can be prerecorded on the playback tape by the buyer or lessee. It will be clear.   Subtitles with a data rate higher than the bandwidth of the VHS video recorder (Subtitle) or other data representing the audio description can Obviously, it can be encoded, recorded and played back by a video recorder U. For example, in the UK, digital terrestrial television services are The subtitle (subtitle) processing information is broadcast in the BI, and a suitable encoder and By using a decoder, the subtitle processing information in this mode is recorded in a similar manner. It is already known that it can be recorded and played back. UK Patent Application 9718326 . No. 3 (PHB34186) uses a similar multilevel code to implement VHS A digital television signal is recorded on a video recorder, and the digital television To reduce the data rate of the signal to within the bandwidth of the VHS recorder A method and apparatus are disclosed. The present invention provides suitable encoding and / or decoding circuits. Encoded and recorded on tape using the standard VHS recording mechanism Applicable to super processing or audio description of subtitles in any of many languages that can be played Obviously gaining. Therefore, the detailed description here Based on a specific example using matte subtitle processing and audio description code However, the present invention is not limited to such an embodiment, and those skilled in the art Can be adapted to information of subtitle processing or audio description encoded in other formats. And it is possible.   FIG. 4 shows a video signal coded according to the teletext standard and multiplexed with a video signal. According to the present invention for playing a tape with multilingual functions added by the data. Device. This device is divided into a video recorder 1 and a TV receiver 2 You. The actual partition between these two is somewhat arbitrary and each component The system can also move from the TV receiver to the VCR. VCR1 Having a multilingual function encoded by teletext data packets, The recording tape 3 is configured to be reproduced. This refers to FIGS. 1 to 3 It is recorded on the tape using a multi-level code as described. Te ー The playback head 4 has a first output supplied to the video processor 5 and an audio processor. And a second output to be supplied to the sensor 6. Control and timing circuit 7 It receives inputs from processor 5 and uses horizontal and vertical sync pulses from such inputs. To generate a timing signal. The output from video processor 5 is also It is also supplied to the first input of the multiplexer 8 and the decoder 9. Such a decoder is Decodes multi-level encoded teletext data and sends it to buffer memory 10. It is configured to be. And this buffer memory is used for the control and timing. It is read out to the teletext encoder 11 under the control of the circuit. Therefore, As explained in the applicant's co-pending application, the teletext data is , Decoder 9, buffer RAM 10 and teletext encoder 11 A standard teletext signal constructed and supplied to the second input of the multiplexer 8 To form This teletext signal is selected during the vertical blanking period and Are selected during the active video line. As a result, the multiplex The output of the receiver 8 is a CVBS signal carrying a standard teletext signal. Mar The output of the multiplexer 8 is connected to the aerial socket 13 of the television receiver 2. Supplied to the modulated modulator 12 or directly via the SCART connection. Connected as CVBS input to vision receiver 2. Voice processor 6 The output is also connected to a modulator 12 or a SCART connection.   The television receiver 2 has a tuner 13, an IF stage 14, and a demodulator 15. . The output of the demodulator on the first line is sent to the video processor 16 It is supplied to the strike decoder 17 and the audio description decoder 18. This output is standard CVBS signal. In an alternative arrangement, the CVBS signal is Video processor 16, teletext decoder 17, and audio description decoder To connect to 18, a SCART connector is connected. Second from demodulator 15 The output is provided to an audio processor 19, which again, in its alternative, The output of the audio processor 6 in the video recorder 1 is connected to the SCART connector To the audio processor 19 of the TV receiver 2.   The control circuit 20, which is a typical television controller, includes a remote control handset. To receive the signal from the user 21 and allow the user to select the required service You. The control circuit 20 controls the tuner to enable acquisition of the selected channel. 13 and an output that allows the selected page to be captured and displayed. To the teletext decoder 17 for the Output to the audio description decoder 18 to enable it to be read, An output to a video processor and an audio processor. These control outputs And their functions are conventional and are in the field of television receiver design. Is well known to those skilled in the art. The teletext decoder 17 is a video processor. It has an output provided to a power supply 16, which is typically an RGB signal. same Thus, the audio description decoder 18 outputs the output supplied to the input of the audio processor 19 Have. The output of the video processor 16 is supplied to a display device 22. While the output of the audio processor is either loudspeaker 23 or headphones. 24 or both.   The television receiver 2 as shown in FIG. Sound to search for data, select the required language, and create additional audio channels Except for the speech description decoder 18 which has a voice synthesizer, it is conventional. afterwards, Such channels are sent to the audio processor 19, from which the loudspeakers 23 And / or sent to headphones 24. The code sent with the audio description Indicates when the main channel should be faded in or out To allow the insertion of additional audio channels.   The control circuit 20 controls the data in those services and the remote control handset 2 Necessary for subtitles and / or audio description according to user command from 1 Select the language to be used. So, for example, an American Phil While listening to the conversation through the speaker while watching the Headphones should be worn with headphones so that Agar can understand what is going on. You can listen to the English language voice channel.   When the control circuit 20 is requested to change the language of the main audio channel, Configure to replace the AUDTEL audio channel with its primary audio channel Can be achieved. In addition, during the silence during the conversation, the usual AUDTEL service It is also possible to include audio dubbing and audio description (description). Both can be provided for each language as needed. Therefore, The audio processor acquires the demodulated audio signal from the demodulator 15 or the audio processor 6. Use this as output to the loudspeaker or headphones, or , Select the output of the audio description decoder 18 and route it to the loudspeaker and / or head. It is configured to be able to supply the phone. A normal audio channel is The audio description service is required in the same language as the main audio channel It can also be used in connection with a voice description audio channel. Therefore, The control circuit 20 controls the main audio channel while the audio description is being reproduced. Will be faded out. This is the standard for AUDEL service It is a typical use form. For other languages, the audio description decoder will It will provide both a voice channel and a speech description for impaired vision. The control circuit 20 selects a speech description for an incompletely sighted person according to the user's request. It may be configured to be selected or not selected.   FIGS. 5 and 6 show the cursor positions on the screen. The user simply moves the cursor to select the desired item. What is the language of subtitles and audio description using This is how it can be selected. In the case of PDC, the data is for recording Is the program label. Such a system is described in EP 0300 No. 562 (PHB33373). Same technology with different codes When using the cursor position, the teletext page number, audio description channel Channel, tape index position, commands for remote computer, etc. It is also possible. In the case of multilingual subtitles, this mechanism is Select a teletext page that carries the language subtitles and / or audio The description selects the desired audio channel and, therefore, Also select the language to be logged.   Therefore, when a tape is inserted into the recorder, the index page is retrieved. An example is shown in FIG. The cursor is a remote control hand. The components shown are moved using the up / down and left / right buttons on the In the example, when a selected button on the remote control handset 21 is actuated, TV with English subtitles as indicated by the cursor position The text page is selected. The next step is the tape index service Followed by a description of what services are available on the tape in English. Again, and again, the cursor is pointing to one of these services. Can be moved to allow for the selection. In the illustrated example, the subtitle Is selected. However, the user has a rough line of work, And some other services such as details about the creator of the program It is also possible to wish to check.   Figure 6 shows the German version selected instead of the English version Indicates the situation. The next stage of indexing is again here Presents the viewer with a variety of options and, in this case, Is selected. Therefore, when playing the tape, the German audio channel Using the code in the audio description to provide the audio channel Generated.   Therefore, the codes of teletext services in many different languages on the tape Has led to a single text used in many different countries with different languages. Group can be created. It is for those who do not speak the native language of the country where they live. Or for countries where multiple languages are used. Simple Subtitles can be achieved by standard teletext technology, Teletext services are not provided on prerecorded tapes, so teletext More pages can be used for superimposed subtitles, and Language is encoded by selecting the correct page number for the desired language. To be selected. More space like AUDETEL Audio description of the scene to be provided. In addition to enabling, a complete audio channel is created in the same manner as the audio description Also allows enough code to be sent. Actually, AUDETEL Enough to allow the use of multiple audio channels using encoding such as Capacity exists.   From reading the present disclosure, other modifications will be apparent to persons skilled in the art. Charge. Such modifications include teletext and AUDETEL, encoders and Tapes and tape recorders, including video and decoders and their components Other features already known in the design and use of data and those already described in the text. And may include other features that may be used in place of or in addition to the features specified. You. The claims specify specific combinations of features in this application However, the scope of the disclosure of the present application shall be interpreted as Whether or not they are related to the same invention, Whether mitigating any or all of the issues, Any new features or any new features disclosed or implied A combination of features or one of those features that would be obvious to one skilled in the art. It is to be understood that it encompasses any generalization matter or more. Book The applicant hereby submits a new claim to this application or any other application obtained therefrom. Features and / or combinations of such features during the procedures of It should be noted that it is also possible to clarify each case.

Claims (1)

[Claims]   1. Prescribed format and standard VHS video recorder ensure recording Data with a higher data rate than can be recorded and played back VHS videotape carrying the data signal,   The data signal is lower than that of a standard data signal and has a VHS recorder As a multi-level signal with a data rate that falls within the bandwidth of the And   The data signal can be a conversation in a different language or a different version of the same language. Have a plurality of data streams, each representing a conversation by   The conversation is a video program recorded on the tape in connection with the data signal. Synchronized with the ram, VHS videotape.   2. 2. The tape according to claim 1, wherein the data includes a teletext signal. In the data stream, conversations in each language are stored in a predetermined number of pairs. A tape in the form of a teletext page contained in a page.   3. 3. The tape of claim 1 or claim 2, wherein the conversation is sub-type. Tape expressed as torr.   4. A tape according to claim 2 or claim 3 dependent on claim 2, wherein The language is recorded on a specific page number and the tape is Page from the index page, a page about a specific language , A tape selected to be played with the video program.   5. The tape of claim 1, wherein the conversation is replayed by a speech synthesizer. A tape that has been encoded using audio description codes so that it can be produced.   6. 6. The tape of claim 1 or 5, wherein the conversation is selected telephony. Encoded using the speech description code in the text packet, The data stream contains an identification code that identifies the language of the conversation in the packet. Tape in the form of a teletext packet containing the password.   7. 7. Replay the VHS videotape according to any one of claims 1 to 6 Device for producing,   The data signal recorded on the tape is decoded, and the predetermined A tape decoder for generating data having a format of   A data decoder;   Means for selecting a data stream for decoding by the data decoder;   Means for reproducing the decoded data stream; A tape reproducing device having the same.   8. VHS video according to claim 2 or any of the claims dependent on claim 2 An apparatus for playing back an optical tape, wherein the data decoder is a teletext decoder. An apparatus as a coder, wherein said data stream is a predetermined teletext page.   9. 9. The apparatus according to claim 8, wherein the teletext page is a subtitle page. The playback means for superimposing the subtitle on a display image. An apparatus adapted to include the means of (1).   10. The apparatus according to claim 7, wherein the data stream is an audio description. Data, wherein the reproducing means generates an audio signal synchronized with the video image. Device having a speech synthesizer for   11. A VHS video tape according to claim 1 or claim 6. The apparatus according to claim 7 or claim 10, wherein the data decoder is a voice recording. Description code and the sound represented by the speech description code in the packet Decoding a data packet containing an identification code identifying the language of the voice Device that can be used as a teletext decoder.   12. Apparatus according to any one of claims 7 to 11, wherein A VHS video recorder connected to or associated with a vision receiver; A decoder including the tape decoder, wherein the television receiver includes the tape decoder; An apparatus that includes a data decoder.   13. Apparatus according to claim 12, dependent on claim 10, wherein the television   John is an apparatus that includes the speech synthesizer.