TWI221716B - Information processing device providing FM/AM signal receiving circuit - Google Patents

Abstract

An information processing device providing FM/AM signal receiving circuit, which can selectively receive signal under power-on condition of main power supply of information processing device and can also receive signal under power-off condition of main power supply of electronic device. The invention comprises a FM/AM control chip, a power supply control chip, a frequency shifting unit and a command generation unit. When the main power supply powers on, the information processing device can go through its preset command to request the FM/AM control chip and the frequency shifting unit to receive a FM/AM signal, and when the main power supply powers off, the information processing device can go through the command generation unit to directly request the FM/AM control chip and the frequency shifting unit to receive the FM/AM signal.

Description

1221716 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a signal processing circuit, particularly a circuit capable of receiving AM / FM signals, and is applied to information processing devices such as personal computers and notebook computers. [Prior technology] Traditional personal computers, or information processing devices, are limited to document editing, data processing, calculation, and simple picture processing, and cannot fully meet the needs of the general public. As computer functions become more and more powerful, faster and faster, and prices are getting lower and lower, personal computers are becoming more and more popular, and more and more people are demanding them. Not only do I want to be able to type while listening to music, watching movies, or day without drawings, and even animating an animation. Computer manufacturers have implemented these professional functions combining audio, video, and interactivity on multimedia computers, and they have even become the mainstream of personal computer development. Multimedia data is presented digitally. Therefore, in order to experience and enjoy the effects of multimedia, you must have comprehensive hardware equipment and powerful software to support its functions. It seems that it hasn't been long before multimedia technology has actually entered the home, but the development of computers has been for several years. However, in the past, it was really difficult for personal computers to integrate multimedia technology. The types of data that a computer can handle include: text, sound, music, video, graphics, video, and daylight, etc. However, these complex data types must be accurately arranged, integrated, and converted to make multimedia effects richer and smoother. Presented on the screen. To achieve these functions, a large amount of memory and a powerful processor must be spent, and these problems are now overcome

1221716 V. Description of Invention (2). On a multimedia-enabled computer, watching TV, FM radio, 5.1-channel audio, digital video recording, movie editing, or MP3 playback can all be implemented concretely, and controlled via a wireless multimedia keyboard, just like a remote control for general home appliances. Under this concept, the computer is no longer a computer that used to emphasize productivity, but a home multimedia video center. : Summary of Content] In the current mature situation of wireless technology, many peripheral devices of computers also use wireless methods to transmit data, so that users can operate the computer at the other end of the study, or even operate the computer in the bedroom. Although the Internet radio can be listened to through the Internet at present, it can only be listened to when the computer is turned on, which not only consumes power, but it is also quite inconvenient to listen to the radio only. In summary, the main object of the present invention is to provide an information processing device having a circuit for receiving an FM / AM signal, which can receive an FM / AM signal regardless of whether it is turned on or off.

Therefore, in order to achieve the above-mentioned object, the information processing device having a circuit for receiving an FM / AM signal disclosed in the present invention includes an AM / FM control chip coupled to a logic chip through a data bus; a frequency adjustment unit, A data bus is coupled to the AM / FM control chip, and a power control chip is coupled to the AM / FM control chip, the frequency adjustment unit, and the logic chip, respectively, for shutting down the information processing device. In this state, provide the power required for the normal operation of these chips. When the main power supply is used, it can be preset by the information processing device.

Page 6 1221716 V. Explanation of the invention (3) The command requires the AM / FM control chip and the frequency adjustment unit to receive an FM 丨 AM signal, and when the main power supply is powered off, the AM / FM control chip can be directly requested through the command generation unit And the frequency adjustment unit receives the FM / AM signal. According to the above, the present invention can be applied to information processing devices such as personal computers, notebook computers, etc., and can selectively receive signals when the main power supply of the information processing device is powered, or when the main power supply of the electronic device is powered off. Receive a signal. Regarding the features and implementation of the present invention, the preferred embodiment will be described in detail with reference to the drawings. [Embodiment]

The information processing device with a circuit for receiving FM / AM signal disclosed by the present invention can be executed when the information processing device is turned on, or wirelessly when the information processing device is turned off. When the information processing device is turned on, an AM / FM signal control software installed in the operating system of the information processing device outputs a first control command to control a logic chip, so that the logic chip can be based on the first The control command requires the AM / FM control chip and the frequency adjustment unit to receive an AM / FM signal corresponding to the first control command, and when the information processing device is turned off, a command generation unit outputs a second control The command enables the AM / FM control chip and the frequency adjustment unit to receive an AM / FM signal corresponding to the second control command according to the second control command. First, please refer to "Figure 1", which is a circuit block diagram of an information processing device having a circuit for receiving FM / AM signals disclosed in the present invention. in

Page 7 1221716 V. Description of the invention (4) Figure 1. On the desktop, there is a power indicator for setting sound to output sound: CPU), and peripherals. The details are in the information processing device-control bridge. The purpose is to be responsible for the control with the control group on Tuesday (usually two bridges, south bridge crystal pass, including controllers). With the technology such as chipset south bridge wafer is a side communication crystal The processor and the other abbreviated chips are the closest to the chip. Nanqiaojing upgrades the external interface of the PCI interface like a floppy disk. South manufacturers often use the personal computer as the information processing device in the proposed embodiments. As an example, it has at least a power supply to supply the power required for normal operation, and has a display to display relevant operating information. The output on the motherboard of the information processing device can be connected to a sound output device, such as a squadron. In addition, the main board is provided with central processing unit memory, south bridge chip, north bridge chip and other electronic components, and the data communication interface such as PS2 and USB interface for device communication will be described in the following paragraphs. Description: When the signal processing device is turned on, it is sent by an FM / AM signal control software installed in the information operating system. The order is to control the south bridge chip (south logic chip) on the motherboard to achieve the chip after receiving the FM / AM signal to accept the command from the central processing unit (CPU). The peripheral chipset is called the logical chipset. The logical chipset is generally divided into a southbridge and a north processor. One is a northbridge chip. The far-end chip is responsible for the trenches of the central processor and peripheral devices, hard disks and optical drives. The IDE controller, USB keyboard, and mouse control are also controlled by the South Bridge chip. The bridge chip has more and more functions integrated, such as audio effects, networking and other functions directly integrated into the South Bridge chip.

Page 8 1221716 V. Description of the invention (5) On-chip. Therefore, the present invention uses a receivable radio frequency chip, which is coupled to the south bridge chip, so that after receiving the FM / AM signal, it is output to the sound processing chip 5 controlled by the south bridge chip and then connected to the sound processing chip handle. The sound output device outputs the received FM / AM signal for the user to listen to.

As shown in "Figure 1", the information processing device with a circuit for receiving FM / AM signals disclosed in the present invention mainly includes an AM / FM control chip 100 and a power control chip 2 0 0 ^ AM / FM control Chip 1 0 0 is coupled to a logic chip 3 0 0 through a data bus 8 0, and the other 2 data buses 8 1 0, 8 2 0 and a frequency adjustment unit 4 0 0 and a display unit 5 0 0 Coupling. The buses adopt a two-wire system management bus (SM bus, also known as I 2C bus) or a three-wire serial peripheral interface bus (SP I). The AM / FM control chip 100, the logic chip 300, and the frequency adjustment unit 400 are coupled to the power control chip 200.

When the information processing device is turned on, that is, when an operating system (Operation System) is running, such as WINDOWS ME, JIE ^ 1 ?, ¥ 100 ¥ 8 2 0 0 0, etc., use an FM / AM signal control The software sends out a first control command. The software can be operated by a keyboard or a mouse or other peripheral devices that can be controlled. The first control command gives a command to the logic chip 300, and the logic chip 300 The first control command informs the AM / FM control chip 1 0 0 'The AM / FM control chip 1 0 0 is then set by the frequency adjustment unit 4 0 0 according to the frequency set in the first control command and connected to 1221716 V. Description of the invention (6) The frequency is received and displayed on the display unit 500, so that the AM / FM control chip 100 can receive the AM / FM signal when it is turned on. This AM / FM signal refers to the radiation frequency (Rad i 0 F r e q u e n c y) signal transmitted in the air, not the audio and video stream signal transmitted through the Internet. The information processing device with an FM / AM signal receiving circuit disclosed in the present invention is mainly characterized in that it can receive a broadcast signal when the information processing device is turned off, so that the information processing device is like a stereo when the information is turned off, and Become a true personal multimedia computer. Therefore, under this premise, taking a personal computer as an example, it must be able to receive a wireless broadcast signal when the power is turned off. To achieve this, the present invention uses a method that can still supply power when the information processing device is turned off. Power supply to electronic components in the device, for example, ENP- 2 9 2 0 power supply from Enhance company, or F SP 2 50-6 0 MS (PF) power supply from FSP company To achieve the object of the present invention.

The AM / FM control chip 1 0 0, logic chip 3 0 0, frequency adjustment unit 4 0 0 power pins are connected to the power control chip 2 0 0 'and the power pin of the power control chip 2 0 0 Connect to the power supply pin on the motherboard. In the power-on state, that is, the power supply of the information processing device supplies power to electronic components such as the AM / FM control chip 100, the logic chip 300, and the frequency adjustment unit 400, and the power is turned off. , The power control chip 2000 supplies the AM / FM control chip 100, the logic chip 300, and the frequency adjustment unit 400. The power required for the operation of these chips is about 3.3 volts. So, by power control chip 2 0 0

Page 10 1221716 V. Description of the invention (7) Electronic components such as AM / FM control chip 100, logic chip 300, frequency adjustment unit 400, etc. can be operated when the information processing device is turned off. The following describes in detail how to receive a wireless frequency signal when the information processing device is turned off. Receiving broadcast signals when the information processing device is turned off is controlled by a command generating unit 600, which can be installed in the housing or screen of the information processing device. The command generating unit 600 is provided with a plurality of control buttons for A control command is issued to control the AM / FM control chip 100. When the user presses a control key, such as a frequency up and down adjustment key, the command generating unit 6 0 0 will output a second control command to the AM / FM control chip 100, and the AM / FM control chip 100 will The control command is set by the frequency adjustment unit 4 0 0 to receive the broadcast signal at that frequency. In addition, the AM / FM: frequency control chip 1 0 0 will display the current frequency on the display unit in digital display according to the second control command. 5 0 0 on. According to the above, the present invention can be applied to information processing devices such as personal computers, notebook computers, etc., and can selectively receive signals when the main power supply of the information processing device is powered, or when the main power supply of the electronic device is powered off. Receive a signal. Although the present invention is disclosed in the foregoing preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art of similarity can make some modifications and retouching without departing from the spirit and scope of the present invention. The patent protection scope of the invention shall be determined by the scope of the patent application scope attached to this specification.

Page 11 1221716 Brief Description of Drawings Figure 1 is a circuit block diagram of an information processing device having a circuit for receiving FM / AM signals according to the present invention. [Symbol description] 100 AM / FM control chip 200 Power control chip 300 Logic chip 400 Frequency adjustment unit 500 Display unit 600 Command generation unit 800 Material bus 810 Material bus 820 Material bus

Claims (1)

1221716 VI. Application for patent scope 1. An information processing device having a circuit for receiving FM / AM signals, the information processing device has at least a central processor responsible for performing calculations, a power supply for supplying power, and a plurality of execution operations The required chip and a plurality of data transmission interfaces for communication with peripheral devices include: an AM / FM control chip coupled to a logic chip through a data bus, wherein the logic chip is coupled to the central processing unit A frequency adjustment unit, coupled to the AM / FM control chip through a data bus, so that when the information processing device is turned on, a frequency adjustment is installed in an operating system of the information processing device / The AM signal control software outputs a first control command to control the logic chip, so that the logic chip can notify the AM / FM control chip and the frequency adjustment unit to receive a signal corresponding to the first control command according to the first control command. FM / AM signal; and a power control chip 'separately from the AM / FM control chip The chip, the frequency adjustment unit, and the logic chip are coupled to provide the power required for the normal operation of the chip when the information processing device is turned off, so that when the information processing device is turned off, A command generating unit outputs a second control command, so that the AM / FM control chip and the frequency adjustment unit can receive an FM / AM signal corresponding to the second control command according to the second control command. 2. The information processing device having a circuit for receiving an FM / AM signal as described in item 1 of the scope of the patent application, further includes a display unit, which is coupled to the AM / FM control chip through a data bus for displaying relative signals.