你好大师我咨询一下！脸上由于长痘没注意感染了结成块
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病情描述：你好 我想咨询一下 脸上由于长痘 没注意感染了 结成块了 主要在脸的两侧下部 靠脖子 有时有点痒 较大 一砣一砣的 较密 有医生说是脂肪瘤 请问 用什么办法治疗呢？ 能用激光治疗吗？ 激光治疗会留疤痕吗？我去你们医院治疗能彻底治疗吗？谢谢 我热切盼望你的回信
因不能面诊，医生的建议仅供参考
您好，可以到医院检查一下体内的激素水平。 进行内分泌方面的中药调理。 激光治疗是可以用的。 一般不会留疤的。 就诊于正规的医院。 可以进行名医名院的查询。
没有满意答案？看看更多相关问答今天看到一辆车，牌子是这样的，能告诉我这是什么牌子吗_百度知道
今天看到一辆车，牌子是这样的，能告诉我这是什么牌子吗
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baidu.jpg" esrc="http.com/zhidao/pic/item/1e30e924b899a901ce6dfdb0208f57d.jpg" target="_blank" title="点击查看大图" class="ikqb_img_alink"><img class="ikqb_img" src="http.hiphotos.baidu.com/zhidao/wh%3D450%2C600/sign=b43fbf2c579ae2/1e30e924b899a901ce6dfdb0208f57d://c.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=87eae30e924b899a901ce6dfdb0208f57d://c江铃汽车<a href="http://c.hiphotos
你好！应该是五十铃汽车
你好，江铃驭胜。
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我们会通过消息、邮箱等方式尽快将举报结果通知您。From Wikipedia, the free encyclopedia
This article has multiple issues. Please help
or discuss these issues on the . ()
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by . Unsourced material may be challenged and removed. (June 2013) ()
D-VHS is a
format developed by , in collaboration with , , and . The "D" in D-VHS originally stood for "Data", but JVC renamed the format as "Digital VHS". It uses the same physical cassette format and recording mechanism as
(but needs higher-quality and more expensive tapes), and is capable of recording and displaying both standard-definition and
content. The content data format is in , the same data format used for most
applications. The format was introduced in 1998.
As a final effort for VHS, the D-VHS system had significant advantages as a highly versatile domestic recorder (the other tape-based formats are
and , which never gained any traction except as
media), but given the wholesale move to
(HDD) recording, the format has failed to make any headway into the video market.
There has been no small-format version of D-VHS JVC, the originator of the format, chose to use
for its digital camcorder lines, and since 2005 has also expanded into
designs based on
storage (the Everio line). JVC does market the
while the tapes and technology used are superficially similar to D-VHS tapes, the underlying data format is based on the
codec and the media formulation is drastically different.
D-VHS VCRs come with multiple speeds. "HS" is "High Speed", "STD" is "Standard" and "LS" is "Low Speed"; where LS3 and LS5 represent 3 and 5 times the standard length of tape.
content such as
is typically stored at 28.2 Mbit/s (HS speed).
content such as 720x576 (720x480) can be stored at
from 14.1 Mbit/s down to 2.8 Mbit/s (STD, LS3, LS5 speeds).
The quality of STD speed is actually superior to the average DVD, since this speed has a much higher bitrate (approximately 14 versus 5 Mbit/s average) and suffers few compression artifacts. The LS3 speed is roughly equal to an amateur DVD with some visible artifacts in high-action scenes (4.7 Mbit/s), and LS5 appears similar to a medium-quality video download (2.8 Mbit/s). JVC's HM-DH40000U and SR-VD400U were the only units to support LS5 recording.
As a result of all these different speeds, the tape labels are a bit confusing for the consumer. D-VHS was originally a standard definition format that recorded at the STD speed. When High Definition recording and HS speed was later introduced, it required twice the amount of tape. For this reason, a DF-240 will record 240 minutes of standard definition, and 240/2 = 120 minutes of high definition. When reviewing the table, note that the digital speeds HS and STD are equivalent to the older analog speeds SP and LP.
Common D-VHS Tape Lengths
Tape Label
Data storage
Tape Length
Recording Time
HS or VHS-SP
STD or VHS-LP
248 m (813 ft)
120 min (2 h)
240 min (4 h)
720 min (12h)
1200 min (20 h)
314.5 m (1,048 ft)
150 min (2:30 h)
300 min (5 h)
900 min (15 h)
1500 min (25 h)
433 m (1,420 ft)
210 min (3:30 h)
420 min (7 h)
1,260 min (21 h)
2100 min (35 h)
500 m (1,640 ft)
240 min (4 h)
480 min (8 h)
1,440 min (24 h)
2400 min (40 h)
There are technical issues with compatibility between recordings from Mitsubishi and JVC D-VHS decks. PAL and NTSC recordings are also incompatible. Very few models are available to the world market and sales of this f correspondingly, prices have remained high for both VCRs and media, contributing to low demand. Also hurting demand, say D-VHS advocates, is poor marketing, resulting in low consumer knowledge of D-VHS's advantages and capabilities. Another primary roadblock to expansion, is the D-VHS's input limitations. The FireWire input is the only way to record high definition content to tape from an owner's TV, but very few TVs have FireWire connections (like Pioneer PRO-930HD/1130HD), and cable boxes with FireWire have to be specially requested from cable companies. Satellite FireWire-equipped boxes are rare or nonexistent.
Existing tape media is bulky and more expensive than hard drives. Although cable companies are gradually switching to the
codec, this should not be an issue for D-VHS units since they can act purely as data stores (like a hard drive but using tape instead), and thereby pass the previously recorded H.264 data directly to the Set-top Box or TV (via i.Link/FireWire). Another alternative is a lengthy transfer to a computer for viewing. Finally, since machines will soon no longer be manufactured, maintenance of current recorders may prove difficult.
D-VHS's primary advantage is that it is still the best way to archive encrypted high definition material from cable programming. Cable, satellite companies, TiVo, and PCs equipped with cable card tuners all offer high-definition , but archival has proven to be an obstacle, as proprietary boxes have restrictions on moving encrypted content. Outside of D-VHS, only HD capture devices that use an analog conversion process, such as the Hauppauge HD PVR and Elgato EyeTV HD, have enabled removal of encrypted content off many of the above proprietary boxes. These HD DVR's use an analog conversion process, producing slightly degraded but still high definition grade recordings. D-VHS, on the other hand, does not need to take advantage of this so-called "analog hole", since D-VHS makes a pure bit-for-bit recording with no conversion necessary. This is made possible by compliance with
flag values carried by the digital streams, wherein only D-VHS is allowed to digitally move recordings of content originally flagged as Copy Once off of a DVR device and onto a D-VHS tape. This programming that complies with the CCI flags then marks such material on the tape such that no second generation copies can be made from the tape itself, though additional copies can still be made directly from the original DVR unit to additional tapes.
Monthly rental fees to cable, TiVo, and satellite are also less with D-VHS.[]
The JVC D-VHS deck released in the , was not a
recorder, although it did have a
input. Instead it is best thought of as a digital recorder for traditional analog inputs such as domestic analog TV and
for digital broadcasts. The deck was able to record D-VHS signals onto
tapes, which made it a cost-effective source of high quality domestic recordings (USA version also allows use of cheaper S-VHS media). Pictures were noticeably superior to S-VHS and were essentially
when compared to an off-air source. Using the LS3 mode, approximately 17.25 hours of digital video could be stored on a S-VHS E-240. The deck's biggest shortcomings were the lack of a DV output and, perhaps more crucially, the lack of
input via the
connector.
versions had
D-Theater logo.
In 2002, prerecorded D-VHS cassettes were sold under the brand name D-Theater in the US. While D-Theater is a D-VHS tape, it is incompatible with D-VHS decks without the D-Theater logo. They provide content in both
as well as at least one
audio track. Supported films studios include , , , and . D-Theater provides much better audio and video quality than previous formats (VHS and DVD), and there isn't a big difference comparing to .[] D-Theater does have region code restrictions. There are 3 1 for the USA, 2 for Japan, and 3 for South Korea. There has never been a D-Theater video release in region 2 or 3.[] Region code hacks for Japanese decks have been performed to support playback of US titles. The last film available was 20th Century Fox's .[] This title was a surprise to many as there were no prior announcements nor any indication that the title was available. It was originally available only on JVC's D-VHS store in late 2004 and no other distributor had it (not even Fox itself). A couple of weeks later they started trickling out to more distributors after much delay and confusion about its existence. Alien vs. Predator was announced to retailers as also being released on the same day as I, Robot, but Fox later announced that Alien vs. Predator was never shipped to retailers.
Most tapes have built-in
mechanism (, also known as "5c") (copy never) that disables copying via .
productions and
via Magnolia Entertainment did provide some of their original content on D-VHS but without copy protection. Many of the tapes have an introduction by the owner
encouraging the viewer to make copies of the program in order to help distribute them.
Additional tracks may be included on D-Theater in other sound formats such as DTS. However, only the newest D-VHS players like JVC HM-DH40000, HM-DH5U, HM-DT100U, and Marantz MV-8300 include alternate audio track capabilities.
DTS D-Theater D-VHS tapes. * means DTS was not mentioned on the package.
When Lionsgate bought Artisan, a number of titles that were supposed to be released were cancelled. Some of them were , , and . 20th Century Fox, while experimenting with DTS, did test tapes of
with DTS. There are also a number of Universal Studio test tapes without DTS tracks, but the released versions contain DTS without that fact being mentioned on the packaging. These DTS tracks were probably late additions. All of these examples of preproduction/review/test tapes have been in the hands of various D-Theater collectors.
Fox was set to release Alien Vs Predator on D-VHS the same day it released I, Robot on D-VHS and claimed the title to be available on their retailer site. The title never appeared on store shelves and was eventually taken down from Fox's site as a D-VHS release. It is unclear why the title was never released and if any copies were produced or made it out to the public. If copies do exist it would be the rarest D-VHS title.
, an analog high-definition recording format
and , digital tape formats using MPEG-2
High-definition (HD)
High definition media
: Hidden categories:Dolby Digital Plus 5.1环绕低音炮没声音 怎么破_百度知道
Dolby Digital Plus 5.1环绕低音炮没声音 怎么破
环绕音箱都有声音就是低音炮没有 除了放杜比测试片的时候有 怎么回事驱动应该没问题
我都试过好几个版本了
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第二个图，把右下角三个都开开。然后上面一排小圆球就可以点了。圆球的高度越高，音效越响，具体音质需要手动调节。里面包含了低音
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