TW492253B - External modules with optional features for a dual-tuner set-top terminal and method of implementing same - Google Patents

Abstract

A system of flexibly implementing a set-top terminal for connection of a subscriber's electronic equipment, such as a television set, to a cable network in which a base set-top terminal can be connected to one of a number of different modules. Each module provides a different function or set of functions when connected to the base set-top terminal. This allows the terminal system to flexibly provide exactly that function or combination of functions needed or desired by a subscriber while standardizing manufacture of the base set-top terminal. The need to produce a range of set-top terminal models is eliminated.

Description

492253 A7 __ B7 V. Description of the invention (1) Field of invention (Please read the notes on the back before filling out this page) The invention relates to the field of cable television systems. Specifically, the invention relates to the field of video decoding terminal equipment connecting subscribers to a wired system. More specifically, the present invention relates to an external module that can be connected to a video decoding terminal device and provides selective features in the terminal device. BACKGROUND OF THE INVENTION A video decoding terminal device is an electronic device box and a computer device for connecting a subscriber to a wired network. Conventionally, each subscriber prepares a video decoding terminal device connected to a wired network via a coaxial cable wall socket. Then, the video decoding terminal equipment is also connected to the subscriber's television, VCR or other electronic devices. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs When so connected, the video decoding terminal provides wired network services to subscribers. For example, video decoding terminal equipment has always received a cable TV signal from a cable network and processed the signal for the subscriber's television, VR or other equipment. This processing may include decoding the "extra cost" channels that the subscriber has subscribed to. The video decoding terminal can also be used to subscribe and watch movie payment or on-demand video program planning, or to provide an electronic program guide for TV program planning on the cable network. In the near future, video decoding terminal equipment can also be widely used to provide a connection between a subscriber's computer and the Internet, or a subscriber's telephone and a public telephone line via a wired network. When the wired network adds additional features and services, it is necessary to upgrade or change the hardware and software of the video decoding terminal equipment to accommodate the new features and services. In addition, subscribers in different regions will provide special features according to different situations and regions -4-This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) 492253 A7 B7 V. Description of invention (2) Special set Service is conditional. For example, in some cases, a subscriber may wish to bypass the video decoding terminal device and provide the incoming cable television signal directly to a television or other device. As in some wired systems, it may be the case that only video decoding terminal equipment is used on a regular basis as a piece-rate payment or on-demand video service. In this case, if the video decoding terminal equipment is not fixedly connected and disconnected, the subscriber will require a video decoding terminal equipment that includes a bypass circuit, so that the signal can be directly delivered to the video decoding terminal equipment circuit when it is avoided TV or other device. In some regions, subscribers have access to two or more different wired networks and / or one or more satellite television systems. As a result, such a subscriber would prefer a video decoding terminal device with a switch for switching between, for example, two different input signals. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page)-line. This different demand makes it difficult to manufacture video decoding terminal equipment. For example, different types of video decoding terminal equipment must be produced, such as the needs of subscribers, providing various characteristics or a combination of the above characteristics, and others. Because many subscribers will only need or can use only some of the functionality in this terminal, it is expensive and inefficient to incorporate all of these features into every video decoding terminal manufactured. As a result, the methods and devices in the present technology need to effectively provide all the features required by a given subscriber in a video decoding terminal device, but reduce the cost and difficulty of a production video decoding terminal device. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 issued) -5-492253 A7 __ B7 V. Description of the invention (3) Abstract of the invention (please read the note on the back? Matters before filling out this page) One of the items of the present invention meets the above needs and other needs. Specifically, one of the items of the present invention is to provide a method and equipment that can effectively provide all the features required by any subscriber in a video decoding terminal device, and can reduce the cost and difficulty of producing a video decoding terminal device. The following description will explain the additional objects, advantages, and novel features of the present invention. Those skilled in the art can learn these additional objects, advantages, and novel features through reading of these subjects and implementation of the present invention. The objects and advantages of the present invention can be achieved by the devices cited in the attached application. In order to achieve these and other objectives, the present invention can be specifically implemented and described as a modular video decoding terminal equipment system in which any number of modules can be added to a basic terminal equipment to assist in processing The signal is delivered from the cable television network to the subscriber's electronic equipment. In other words, the system of the present invention includes a basic video decoding terminal device and a module for connecting to the basic video decoding terminal device. The module provides additional hardware characteristics of the basic video decoding terminal equipment. It is not possible to `` customize '' the system by choosing a module that can provide the correct characteristics or a feature set required by a particular subscriber. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints a basic module that can simply include circuits for delivering a TV signal from a cable TV network to a basic video decoding terminal device and on the cable TV network 5 Be prepared to pass the 5 Duplex benefits. A more advanced module may be a bypass module, which allows an incoming signal to selectively avoid the basic video decoding terminal equipment and be used by the subscriber's electronic equipment before the system outputs. The bypass module contains a switch. The switch is compatible with the Chinese National Standard (CNS) A4 specification (210 X 297 mm) for this paper. -6-492253 A7 _ B7 V. Description of the invention (4) A basic video decoding terminal device It is controlled by the control signal and is used to selectively make the basic video decoding terminal device avoid the incoming signal. (Please read the precautions on the back before filling this page) This module can also be an A / B switching mode for selectively providing an incoming signal from the first or second signal source to the basic video decoding terminal equipment group. The A / B switching module includes a switch controlled by a control signal from a basic video decoding terminal device for selectively connecting the basic video decoding terminal device with an incoming signal from a first or second signal source. This module can also be a combined bypass—A / B switching module with the features and functions of a combined bypass and A / B switching module. Other types of modules that provide different features or functions of basic video decoding terminal equipment are also within the scope of the present invention. Any such module can also be built to deliver the appropriate signals to two or more separate tuners in this basic video decoding terminal. As a result, this facilitates the use of multiple tuners in video decoding terminal equipment and provides more efficient signal processing services. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics The present invention also includes a method for implementing the above-mentioned video decoding system for providing a television signal from a cable television network to electronic equipment of a subscriber. Specifically, the method of the present invention includes connecting a separate manufacturing module to a basic video decoding terminal device, and a module providing additional hardware features to the basic video decoding terminal device. BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate the invention and are part of the specification. The drawings, together with the following description, illustrate and explain the principles of the invention. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 Public Love 1 492253 A7 ______B7 V. Description of the invention (5) Figure 1 is a block diagram of a basic module and video decoding terminal device according to the present invention. FIG. 2 is a block diagram of a bypass module used in a video decoding terminal device according to the present invention.

FIG. 3 is a block diagram of an a / B switching module used in a video decoding terminal device according to the present invention. Figure 4 is a block diagram of a combined bypass-A / B switching module used in a video decoding terminal device according to the present invention. (Please read the note 2 on the back before filling in this page). See: Comparison Table of Main Elements 10 1 10 2, 10 10 4 10 5 1 06 1 0 10 10 9.20 110 Video Decoding Terminal Equipment Video tuner re-modulator sending circuit TV basic module amplifier splitter duplexer connected to wired network signal source out-of-band bypass module -_ line · Printed by the Intellectual Property Bureau of the Ministry of Economy Staff Consumer Cooperatives 2 0 0

1 1 2 A 1 1 2 A This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) · 8-492253 A7 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (6) 2 0 2, 3 0 1 2 0 3, 3 0 2 2 0 4 3 0 0 4 0 0 Preferred embodiments are described in detail with reference to drawings, and preferred embodiments of the present invention will now be described. The present invention provides a system for setting up a video decoding terminal device. The video decoding terminal device has those specific hardware characteristics required by a specific subscriber without the need to produce a variety of different terminal device models with different combinations of hardware characteristics. To achieve this, the present invention provides a basic video decoding terminal device that can connect various modules with different hardware characteristics to it. In this way, basic video decoding terminal equipment is always produced in the same way, and terminal equipment of different models can be eliminated. This reduces the cost and difficulty of producing terminal equipment. Provide various hardware features, or feature combinations, with optional add-on modules according to specific requirements. FIG. 1 is a block diagram illustrating a first embodiment of the present invention. As shown in Fig. 1, a basic video decoding terminal device (101) includes many components which will be described below. In addition, those skilled in the art will understand that the video decoding terminal device (101) also includes a central processor (not shown) for processing signals and the control function of the video decoding terminal device (101). The basic video decoding terminal device (1 0 1) includes, for example, a video switch control signal output switching module combination module (please read the precautions on the back before filling this page) ^:. -Line · This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) -9- 492253 A7 B7 V. Description of the invention (7) The signal tuner (102) is used to receive the cable TV signal from the incoming in analog or digital format. (1 1 2) Tune a specific TV channel. Preferably, the video tuner (102) has wide tuning ability and can tune an analog video channel. The channel is (1). For example, under the National Television Standards Committee (NTSC) standard, it is a standard for clean analog channels. 2) — lock code analog signal or (3) — digital channel, such as a QA MU channel carrying signals, audio and / or data. The video tuner (102) should preferably also be able to tune an out-of-band (OOB) (1 1 3) signal so that the cable system operator can broadcast the program planning or announcement of the terminal equipment (1 0 1) on the out-of-band signal . In addition, the tuner (102) can also tune the D 0 C S I S channel, that is, the channel broadcast according to the cable data service interface specification (DO C S I S). The basic video decoding terminal device (101) may also include a second tuner (103). This second tuner (103) is the same as the first tuner (102) with wide capability to tune channels in various formats. This can be exploited to allow subscribers to tune two channels at the same time, enhancing subscribers' use of terminal equipment (101). Tuning two separate channels at the same time can be expected to separately provide different channel signals to a TV and a V C R or to produce a picture-in-picture display on a TV with two channels at the same time. Alternatively, the first and second tuners (102 and 103) may be dedicated to slightly different functions. For example, an analog TV channel can be tuned using one of two tuners (102 or 103), while the other tuner provides tuning in either a quadrature amplitude modulation (QA M) or degraded sideband (VS Β) format. Digital channel capabilities. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) "10- One (Please read the note on the back? Matters before filling out this page) Order _ _ Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economy 492253 A7 ___ B7 V. Description of the invention (8) (Please read the note on the back? Matters before filling out this page) In another architecture, the first tuner (1 0 2) can be like the above and can be used in various formats A tuner that tunes a channel to produce a video signal. However, the second tuner (103) can be dedicated to receiving data in the DOCSIS format and may not be accompanied by the electronics required to generate a video signal. This architecture A terminal device (100) with a dedicated video path through the first tuner (102) and a dedicated data path through the second tuner (103) will be basically provided. This architecture is represented by The second tuner (103), which is a DOCSIS tuner, is illustrated in the figure. A re-tuner (104) is also provided in the video decoding terminal device (101), and the output is processed. , Modulated signal, ready to subscribers TV or other electronic equipment. As shown in Figure 1, the re-modulator (104) is connected to, for example, a television (106). Alternatively, a terminal device ( The output of 1 0 1) is provided to, for example, a VCR, a computer, etc. The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints the video decoding terminal equipment (1001), especially for advanced systems, which must be connected to the head of the wired network. Device "upstream. As a result, the terminal device (101) preferably also includes a signaling circuit (105) for transmitting a signal from the terminal device (101) to the network on the wired network. The head-end facilities of the road. This is a requirement for DOCSIS connection. These components constitute the basic video decoding terminal device (101) of the present invention and provide the basic functionality of the video decoding terminal device. In addition, under the principles of the present invention, Various modules with different hardware characteristics can be used in combination with the basic video decoding terminal equipment (101) to provide special -11-This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 492253 A7 _ B7 5. Description of the invention (9) The functions required or expected by the user. For example, Figure 1 shows that only the minimum hardware is provided to support the basic video decoding terminal device (1 0 1) function without providing any of the additional functionality. Basic module (107). The basic module (107) includes a duplexer (11) connected to a wired network (112). As shown in Figure 1, the duplexer (110) is also connected to the signaling circuit (105). The duplexer (110) controls the direction of signal flow to and from the video decoding terminal device (101) according to the frequency selective control. As a result, the duplexer (110) allows the signal to be transmitted from the video decoding terminal device (1001) to the head-end facility through ', upstream' and also provides the cable signal for the video decoding device (1001) '' Receiving downstream. The signal received by the duplexer (110) from the wired network (112) is output to an amplifier (108). The amplifier (108) is driven by a link (1 1 1) connected to the basic video decoding terminal device (1 0 1). Traditionally, video decoding terminal equipment (101) can be independently pushed from an A / c electrical wall socket. The diverter (109) separates the incoming television signal and provides it to both the tuner (102 and 103) of the video decoding terminal device (101). The amplifier (108) included in the module and other modules described below improve the overall noise response of the terminal device (101). The terminal device will otherwise diverge input signals to the two separate tuners (1 0 2 and 1 0 3) while degrading and reducing the power of the input signal. FIG. 2 illustrates a basic video decoding terminal device (101) of the present invention connected to a bypass module (200). Bypass module (200) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperative -12- 492253 A7 B7 V. Description of the invention (10) (Please read the note on the back? Matters before filling out this page) Provide additional hardware functions will come from the cable network (1 1 2) TV signal Delivery to a television (106) or other device, while avoiding the circuit of the basic video decoding terminal device (101). The basic video decoding terminal device (1 0 1) is the same as that shown in Figure 1 and therefore will not be described in detail. Similar to the basic module (1 0 7), the bypass module (2 0 0) includes a connection to the transmitter The duplexer (110) of the information unit (105), the amplifier (108) and the splitter (109) driven by the video decoding terminal device (101). However, the splitter (109) is not directly connected to the two tuners (102 and 103). Instead, the branch section below the branch (109) is connected to the video tuner (102), while the upper branch section replaces the DOCSIS tuner (103) and is connected to a second branch (20). 1 ). The branch under the second branch (2 0 1) is connected to the DoCSIS tuner (103) and in the same form as the basic module (107) provided in Figure 1, from The wired network (1 12) provides the incoming wired signal to the DOCSIS tuner (printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by 103). The branching part above the second branching device (2 0 1) is connected to a switch (2 0 2). The switch (2 0 2) selectively connects the output of the video decoding terminal device (1 0 1) or the signal from the branching part on the second branching device (2 0 1) to the subscriber, for example, a television (1 0 6) Or other electronic equipment. In this way, depending on the position of the switch (2 0 2), the television (1 0 6) can receive the output (2 0 4) of the video decoding terminal device (1 0 1) or directly receive from the wired network (1 1 2) No. 13- This paper size applies Chinese National Standard (CNS) A4 (210 X 297 mm) 492253 A7 _ B7 V. Description of the invention (11) instead of the video decoding terminal device (1 0 1 ) Processed signals. The switch (2 0 2) is preferably controlled by a control signal (2 0 3) from the video decoding terminal device ((Please read the note on the back? Matters before filling out this page) 1 0 1). As a result, the user can control whether the signal received by the television (106) has been processed by the video decoding terminal device (1 0 1) via the video decoding terminal device (2 0 2). . The video decoding terminal device (101) has always included a user input device such as a keypad, a switch, etc. on the terminal device itself or a remote control device, so that the user can control such a position as a switch (202) Features. FIG. 3 illustrates the basic video decoding terminal device (1 0 1) of the present invention connected to an A / B switching module (3 0 0). A / B switching module Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (300) Provides a video decoding terminal device (1 0 1) to receive one from two different sources (1 12 or 1 12 A) Additional hardware capabilities for input signals. For example, the A / B switching module (300) is connected to a wired network (1 12) and another signal source (1 12 A). The other signal source (1 1 2 A) may be, but is not limited to, a second cable network, a land UH F or V H F TV antenna, or a satellite TV dish antenna. The basic video decoding terminal device (101) is the same as that shown in Fig. 1 and therefore will not be described in detail. Similar to the basic module (1 07) 'A / B switching module (30 0) includes a duplexer (110) connected to the transmitting unit (105), and the video decoding terminal device (1 0 1) ), The amplifier (108) and the splitter (109). However, the splitter (109) is not directly connected to the two tuners (102 and 103). And ^ paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) -14-492253 A7-B7 V. Description of invention (12)

Yes, the branch below the branch (1 0 9) is still connected to the Docs 1 S tuner (103), and the branch above is connected to a switch (301) (Please read the precautions on the back before filling this page ) 〇 Switch (3 0 1) selectively connects the video tuner (1 0 2) of the video decoding terminal device (1 0 1) to a cable network (1 1 2) or other signal source (1 1 2) A) The TV signal comes in. In this way, the video decoding terminal device (101) can receive an input signal from any two signal sources (112 and 112A) for the subscriber's television (106) or other electronic equipment. The switch (301) is preferably controlled by a control signal from the video decoding terminal device (101). As a result, by controlling the switch (3 0 1) through the video decoding terminal device (101), the user can control whether the signal output from the video decoding terminal device (1 0 1) to the television (1 06) is the cause. Signals from a wired network (1 1 2) or from other signal sources (1 1 2 A). As before, the video decoding terminal equipment (printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed on the 101) will include user input devices such as keypads, switches, etc. on the terminal equipment itself or on a remote control device, so that users can Such as the position of the switch (301) to control this function. Optionally, the user does not perceive the control of the switch (301). This control is dynamically set according to the main processor of the video decoding terminal device (101) according to each channel, and according to the specific program channel is Depending on which network (1 1 2 or 1 1 2 A)

Q Figure 4 illustrates a combination module (400) that provides both terminal bypass and A / B switching. The combination module (400) provides video resolution. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (21 × X 297 mm). -15-492253 A7 --------- B7_____ V. Description of the invention (1: 3)

Code terminal device (1 〇1) receives the additional hardware function of the input signal from one of two different sources (1 12 or 1 12 A (please read the notes on the back before filling this page)), with or without cause The basic video decoding terminal device (101) processes this input signal. The basic video decoding terminal device (101) is the same as that shown in Fig. 1 and therefore will not be described in detail. Similar to the basic module (1 0 7), the bypass module (2 0 0) and the A / B switching module (3 0 0), the combined module (4 0 0) includes a connection to the signaling unit (1 0 5) a duplexer (110), an amplifier (108) driven by a video decoding terminal device (101), and a first diverter (109). The branch below the branch (109) is connected to the DOCS SI tuner (103). The diverter above the diverter (1 0 9) is connected to a first switch (3 0 1). The switch (3 0 1) selectively connects a second diverter (2 0 1) to the incoming television signal from the first (1 12) or second (1 12 A) signal source. The branching section under the second branching device (2 0 1) is connected to the video tuner (1 0 2). As a result, the video decoding terminal device (101) can receive an input signal from any two signal sources (112 and 1 12 A) to the subscriber's television (106) or other electronic equipment. Ministry of Economic Affairs The consumer property cooperative of the Intellectual Property Bureau printed a second diverter (2 0 1), and the divergent part was connected to a second switch (2 0 2). The second switch (2 0 2) selectively connects the subscriber's television (1 06) or other electronic equipment to the output of the basic video decoding terminal device (1 0 1) or from any two signal sources (1 1 2 or 1 1 2 A) without a signal that has passed through the basic video decoding terminal device (1 0 1). In this way, the paper size of the combination module (400) is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm 1-16 ^ 492253 A7 B7. V. Description of the invention (14) (please read the back first) Note of note? Please fill in this page again) For the functions of terminal bypass and A / B switching. Specifically, 'depending on the first and second switch positions, the combination module (4 0 0) can provide four outputs Any one of the signals to the television (106), that is (1) a signal from a source (1 1 2) processed by a video decoding terminal device (1 0 1), and (2) a signal from a video decoding terminal device (1 〇1) The signal from the source (1 12 A) processed; (3) The signal from the source (1 1 2) that avoided the video decoding terminal device (1 0 1) or (4) The signal from the avoided video decoding The signal of the source (1 12 A) of the terminal device (101). The employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed it as before, and the switches (202 and 301) should be decoded by the video terminal device. (1 0 1) is controlled by the control signals (203 and 3 02). As a result, the terminal device is decoded via video (1 〇1) With the control switch (203 and 301), the user can control whether the signal output from the video decoding terminal device (1 0 1) to the television (1 0 6) is a wired network ( 1 1 2) The signal provided or from another signal source (1 12 A) and whether the signal is processed by the basic video decoding terminal device (1 0 1) or whether the signal bypasses the basic video decoding terminal device (1〇1 As before, the video decoding terminal device (101) will include a user input device such as a keypad, a switch, etc. on the terminal device itself or on a remote control device, so that the user can act as a switch (203 and 3 0 1) This function is controlled by position. Alternatively, depending on which network (1 12 or 1 12 A) a particular program channel is in, the master of the video decoding terminal device (1 0 1) can be The processor automatically controls the A / B switch. -17- This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ^ 2253 A7 — ^ ___-- 5. Description of the invention (15) Best, basic Video decoding terminal equipment (101) and each independent module 'e.g. (107, 2 00, 3 0 0, or 4 0 0) are each prepared (please read the notes on the back before filling this page) in the separation cover (101, 107, 200, 300, or 40). Each of these covers can be Completely installed in the appropriate ports and connectors' to join the basic video decoding terminal device (101) with a module (107, 200, 300, 400) in the manner described. Alternatively, the basic video decoding terminal device (1001) or module (107, 200, 300, or 400) may be partially opened. 'Allow the above-mentioned terminal device (101) and the module (1 0 7, 2 0 0, 3 0 0 or 4 0 0). As another alternative, the module (107, 200, 300, or 400) can be provided, for example, on a circuit board, which is installed in the outer cover (101) of the basic video decoding terminal device. It is best to reduce the number of electrical connections between each module (107, 2000, 300 printed by the Intellectual Property Bureau's Employees' Cooperative Cooperative, Ministry of Economic Affairs, printed by 4,000) and basic terminal equipment (101). To the minimum, make it as easy as possible to connect each module to the terminal device. As a result, in a preferred embodiment, only four signal paths are required between any module and a basic terminal device (1 0 1) containing two tuners, that is, connected to the first or video tuner (1 0 2) The connection is connected to the second or DOCSIS tuner (103), the connection to the re-tuner (104), and the connection to the signaling circuit (105). The power (111) of the amplifier (108) can be carried on the same signal path that connects the DOCSIS tuner (103) to the module (107, 2000, 300, or 400). Set. -18- This paper size applies Chinese National Standard (CNS) A4 (210 X 297 mm) 492253 A7-B7 V. Description of the invention (16) Bypass module (2 0 0) can be used in the video tuner ( 1 0 2) A bypass switch control signal (203) is carried on the same signal path connected to the module (200). A / B switching module (300) can carry A / B switch control signal (3 0) on the same signal path connecting the video tuner (100) to the module (300) 2 ). Finally, with the combination module (400), the A / B switch control signal (3 0 2) can be carried on the same signal path connecting the video tuner (1 0 2) to the module (400 0). ) And a bypass switch control signal (203) can be carried on the same signal path connecting the re-modulator (104) to the module (400). The amplifier power (1 1 1) and the switch control signal (203 and 3 02) are generated in the terminal device (1 0 1) as described above, combined with the RF signal line, and then delivered to the module. In the module, the amplifier power (1 1 1) and the control signal (203 and 3 02) are separated from the RF signal and are used accordingly. This minimizes the number of connections between terminal equipment and modules. As a result, the present invention allows a consistent and less expensive manufacturing of a single basic video decoding terminal device model, and a subscriber can accurately obtain a desired characteristic or combination of characteristics by connecting an appropriate module or module to the basic video decoding terminal device. Moreover, the electrical connection structure between a module and a basic video decoding terminal device is made as simple as possible. This reduces the cost of production systems and ensures that subscribers receive and pay only for those features that they need or can use. The foregoing description is provided only for purposes of illustration and description. This is not intended to be exhaustive or to limit the invention to any precise formation as published. In view of (please read the notes on the back before filling out this page). --Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is printed in accordance with the Chinese National Standard (CNS) A4 (210 X 297 mm)- 19- 492253 A7 B7 V. Description of the invention (17) Many modifications and changes are possible. The preferred embodiments are selected and explained to best explain the principles of the invention and its practical application. The foregoing description is intended to enable other persons skilled in the art to make full use of the present invention in various embodiments and various modifications as appropriate for the particular intended use. It is expected that the scope of the present invention is defined by the following patent applications. (Please read the precautions on the back before filling out this page) Order ·--· Line Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs This paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm)- 20-

Claims (1)

492253 A8 B8 C8 D8 VI. Application for Patent Scope Annex I ... 89 119 1 53 Patent Application Chinese Application for Patent Scope Amendment February 1991 Amendment 1. A type for providing a television signal from a cable television network Video decoding terminal equipment system to subscriber electronic equipment, the system includes: a basic video decoding terminal equipment; and a module connected to the basic video decoding terminal equipment, the module provides additional hardware features to the basic video decoding terminal Equipment; the system further comprises at least one input for receiving the television signal and an output for outputting an output signal to the electronic device. 2. The system according to item 1 of the patent application scope, wherein the module comprises: a circuit for delivering the television signal from the cable television network to the basic video decoding terminal device; and a circuit for A duplexer that transmits a signal from the basic video decoding terminal device on the network. 3. The system according to item 2 of the patent application, wherein the basic video decoding terminal device includes two separate tuners and the module includes a diverter for providing the television signal to the two tuners. 4. If the system of the scope of patent application is No. 1, wherein the basic video decoding terminal device includes two separate tuners and the module includes a diverter for providing the television signal to the two tuners. 5 · If the system of item 3 of the scope of patent application, the basic video decoding terminal equipment further includes an amplifier circuit, when the television signal is subject to the Chinese National Standard (CNS) A4 specification (210X297 mm) by the paper size ~ : (Please read the precautions on the reverse side before filling out this page). ··· 1T Printed by the Employee Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economy 492253 A8 B8 C8 D8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 范围 Scope of patent application Used to amplify the TV signal when the splitter is separated. 6 · If the system of item 1 of the patent application scope, wherein the module is a bypass module, it is used to allow the incoming signal to selectively avoid the basic video decoding terminal equipment before the system outputs an incoming signal. Used by this electronic device. 7 · The system according to item 6 of the patent application, wherein the bypass module includes a switch controlled by a control signal from one of the basic video decoding terminal equipment for selectively avoiding the basic video Decode the terminal equipment and the incoming signal. 8. The system according to item 1 of the scope of patent application, wherein the module is an A / B switching module for selectively providing an incoming signal to the basic video from a first or second signal source Decoding terminal equipment. 9. The system according to item 8 of the scope of patent application, wherein the A / B switching module includes a switch controlled by a control signal from the basic video decoding terminal device for The incoming signal of the first or second signal source is selectively connected. 1 〇. If the system of the scope of patent application No. 1 of which, the module is a combined bypass-A / B switching module 'used to allow the incoming signal to be selected before the system outputs an incoming signal The basic video decoding terminal device is used to avoid the basic video decoding device and is used by the electronic device to select a source of the incoming signal from the first and second signal sources. 1 · If the system of the scope of patent application No. 10, the combination module includes: a first control signal station from the basic video decoding terminal equipment (please read the precautions on the back before filling this page) A Packing This paper size adopts Chinese National Standard (CNS) A4 specification (210X297 mm) -2-492253 A8 B8 C8 D8 91 · Year Amendment 6. The first switch for patent scope control, used to selectively avoid the basic video A decoding terminal device and the incoming signal; and a second switch controlled by a second control signal from the basic video decoding terminal device, for selectively connecting the basic video decoding terminal device and the first video decoding terminal device from the first video decoding terminal device; A signal source should come in. 1 2 · If the system of item 1 of the scope of patent application, the basic video decoding terminal equipment and the module are separately placed in separate covers. 1 3-An implementation method for a video decoding terminal equipment system for providing a television signal from a cable television network to a subscriber electronic device, the method comprising connecting a separately produced module to a basic video decoding terminal equipment The module provides additional hardware characteristics of the basic video decoding terminal device. ○ 4 The method of item 13 in the scope of the patent application, further includes: delivering a television signal from the cable television network to the module via the module. A basic video decoding terminal device; and transmitting signals from the basic video decoding terminal device on the cable television network and the module. 15 · The method of item 13 of the scope of patent application further includes dividing the TV signal in the module, and providing the TV signal to two tuners in the basic video decoding terminal device. · · 16 · If method 13 of the scope of application for patents further includes, using this module, the basic video decoding terminal device is selectively removed from the signal path of an incoming signal. 1 7. If the method of applying for the item No. 16 of the scope of patent application, it also includes one (please read the precautions on the back before filling this page) China National Standard (CNS) A4 specification (210 X 297 mm) _ 3-492253 9m & 〆, fr -v * years, 丨: 1 * JL · " i, two D '-v yu A8 B8 C8 D8 6. The scope of the patent application comes from the control signal of the basic video decoding terminal device, and the selective removal of the basic video decoding terminal device is controlled from the signal path. 18 · The method according to item 13 of the patent application scope further includes using the module to selectively provide an incoming signal from a first or second signal source to the basic video decoding terminal device. 19 · The method according to item 18 of the scope of patent application, further comprising controlling the selection of the incoming signal from the first or second signal source with a control signal from the basic video decoding terminal device. 20 · The method according to item 13 of the patent application scope further includes assembling the basic video decoding terminal device and the mold in a separate cover. 21.-A video decoding terminal equipment system for providing a television signal from a cable television network to subscriber electronic equipment, the system comprising: a basic video decoding terminal equipment; and a video decoding terminal equipment for connecting to the basic video decoding terminal equipment Device, the device provides additional hardware features to the basic video decoding terminal device; the system further includes at least one input for receiving the television signal and an output for outputting an output signal to the electronic device. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 2 2 · If the system of the scope of patent application No. 21, wherein the device includes: for transmitting a television signal from the cable television network to the basic video decoding terminal equipment A device; and a device for transmitting a signal from the basic video decoding terminal 5 on the cable television network. 2 3 · If the system of the scope of patent application No. 21, where ’is used for this paper size, the Chinese National Standard (CNS) A4 specification (210X297 mm) · 4-492253 A8 B8 C8 D8 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The scope of the patent application is connected to the basic video decoding terminal device. A device used for the electronic equipment. 24. If the system according to item 21 of the patent application scope, the device for connecting to the basic video decoding terminal device includes means for selectively providing an incoming signal from the first or second signal source to the basic Device for video decoding terminal equipment. 25. A video decoding terminal equipment system for providing a television signal from a cable television network to subscriber electronic equipment, the system comprising: a basic video decoding terminal equipment; and a connection to the basic video decoding terminal equipment Two or more modules, each of which provides a different set of additional hardware characteristics to the basic video decoding terminal device; the system further includes at least one input for receiving the television signal, and one for output An output signal is output to the electronic device. 26. The system according to item 25 of the patent application scope, wherein the module includes: a circuit for delivering the television signal from the cable television network to the basic video decoding terminal device; and a circuit for A duplexer that transmits signals from the basic video decoding terminal equipment on a cable television network. 27. The system according to item 26 of the patent application, wherein the basic video decoding terminal device includes two separate tuners and the module includes a diverter for providing the television signal to the two tuners. (Please read the notes on the back before filling this page) This paper size applies to Chinese National Standard (CNS) A4 specification (210X 297 mm) -5- 492253 A8 B8 C8 D8 9L;: >: fp 4r. Rii '… 丄! I,, λ,% • • 广 * * Ί · 1. • Wide shop see 6. Application for patent scope 2 8 · If the application video decoding terminal provides the TV message 2 9. If the application video decoding terminal is separated by the splitter 3 0 · If the application group is a bypass The module selects the incoming signal as the system for which the electronic device uses the scope of patent claim No. 25, wherein the base device includes two separate tuners and the module includes a diverter with a number to the two tuners. The system according to item 27 of the patent, wherein the base device further includes an amplifier circuit for amplifying the television signal when the television signal. Please refer to the system of item 25 of the patent. Among them, the module is used to allow the basic video decoding terminal device to be selectively avoided before the system outputs an incoming signal (please read the precautions on the back before filling in this (Page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. If the system of the scope of patent application No. 30, where the side gate, the switch is controlled by a terminal number from the basic video decoding for selective avoidance The basic video decoding terminal device and the incoming signal. 3 2 · If the system of item 25 of the patent application scope, wherein the module is an A / B switching module, used to selectively provide an incoming signal from a first or second signal source to the Basic video decoding terminal equipment. 33. The system according to item 32 of the scope of patent application, wherein the A / B switching module includes a switch controlled by a control signal from the basic video decoding terminal device, and is used for the basic video decoding terminal device. Selectively connect with the incoming signal from the first or second signal source. For example, in the system with the scope of patent application No. 25, wherein the circuit module includes a control signal group of one of the opening devices. It is a combined bypass——A / B switching module, which is used to output the paper size in this system. It is applicable to Chinese National Standard (CNS) A4 specification (210X297 mm) -6-492253 A8 B8 C8 D8 91. 2, 2 0, 0, 6, 6. Before the scope of patent application, the incoming signal can be allowed to selectively bypass the basic video decoding terminal device and be used by the electronic device to select one of the first and second signal sources. The source of the incoming signal. 35. The system according to item 34 of the scope of patent application, wherein the combination module includes: a first switch controlled by a first control signal from the basic video decoding terminal device, for selectively avoiding the A basic video decoding terminal device and the incoming signal; and a second switch controlled by a second control signal from the basic video decoding terminal device, for selectively connecting the basic video decoding terminal device with the first or The incoming signal of the second signal source. 36. If the system according to item 25 of the scope of patent application, the basic video decoding terminal equipment and the module are separately provided in separate covers. (Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper size applies to China National Standard (CNS) A4 (210X297 mm)