Introduction of Shanling SVCD2000 DVD / amplifier combination machine

There are four components in the home theater system, namely the TV, speakers, DVD player and AV amplifier. As far as the current market is concerned, these four parts are relatively independent, and most are sold separately. From the point of view of the complexity of the operation, the AV amplifier is the most important because it is responsible for the management of the entire system, especially the related connections are accessed through it. If you consider saving money, reducing "land use", simplifying operations, etc., perhaps combining functions is a method that is close to consumers. The SVCD2000 DVD / amplifier combination machine produced by Shenzhen Shanling Company is such an example. It combines SVCD, four-channel amplifier, karaoke, Dolby directional logic decoder, AM / FM radio, five-band equalizer, and six-channel signal source. Switching and other functions are all in one. The large-screen VFD display and full remote control are adopted. Not only is the operability better than the stand-alone, but also the cost performance is higher.
Due to space limitations, the author mainly describes the characteristics of the aircraft.
The SVCD part adopts the best combination of today: the movement is the CD-7 of Philips, and the CVD-2 of C-Cube for decoding to ensure the best image quality. Shan Ling SVCD2000 video disc / amplifier combination machine only uses one single-chip computer to complete the servo and decoding control that most traditional VCD can only achieve with two single-chip computers. The advantages of this design not only reduce the cost, but also have better error correction and circuit stability.
The signal processing and control part is the core part of the traditional AV center. Signal processing refers to the processing of the input signal volume, tone, and sound field (including surround sound decoding).
In consideration of cost performance, the machine uses Mitsubishi's M62460 Dolby directional logic decoder. Its feature is that it can be controlled by a single-chip microcomputer. It has some new functions than the previous generation M69032 decoder. This is the more popular Dolby directional decoder. Logic decoding chip. It can realize environmental sound effects such as churches, halls, stadiums and discos, and input the signal marked with the DolbySurround software logo to Dolby directional logic or Dolby three-channel mode.
Shan Ling SVCD DVD / amplifier combination machine selects the newer multi-function chip M62433 for signal comprehensive control. From the perspective of function and peripheral circuit, it is more concise, no more single-function chips are needed, and thus the motor potentiometer is eliminated, and the rotary coding switch is replaced. The advantage of using a rotary coding switch is that it is reliable and durable, there is no wear of the potentiometer, and a switch can achieve multiple functions. With VFD display, it can change the control of multiple uses.
The machine uses a large-screen VFD fluorescent display panel. As an AV product, human-machine dialogue is very important. Whether there is a large-screen VFD in the AV center is often an important indicator of whether the product is sufficient or not. The current level of the machine is thus glanced at a glance.
The MCU control unit of the system adopts M38B5 which can drive VFD, which is characterized by simple hardware circuit and many functions.
The karaoke circuit uses the high-quality, well-known M65831 chip.
The four channels of the power amplifier circuit part all use discrete components to take account of Hi-Fi. The main channel is 2 × 80W, and the center and surround are 50W respectively.
The symmetrical appearance design of the machine and the novel remote control shape bring a bit of lively color to the SVCD2000.
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